Geological hazards: Hidden dangers for construction
- Neilson, J., Peck, W., Wood, P., Dahlhaus, Peter, Miner, Anthony, Brumley, J., Kenley, P., Wilson, R., Willman, C., Rowan, J.
- Authors: Neilson, J. , Peck, W. , Wood, P. , Dahlhaus, Peter , Miner, Anthony , Brumley, J. , Kenley, P. , Wilson, R. , Willman, C. , Rowan, J.
- Date: 2003
- Type: Text , Book chapter
- Relation: Geology of Victoria Chapter p. 573-591
- Full Text:
- Reviewed:
- Description: 2003000625
- Authors: Neilson, J. , Peck, W. , Wood, P. , Dahlhaus, Peter , Miner, Anthony , Brumley, J. , Kenley, P. , Wilson, R. , Willman, C. , Rowan, J.
- Date: 2003
- Type: Text , Book chapter
- Relation: Geology of Victoria Chapter p. 573-591
- Full Text:
- Reviewed:
- Description: 2003000625
Geomorphology: The evolution of Victorian landscapes
- Joyce, Edmund, Webb, John, Dahlhaus, Peter, Grimes, Ken, Hill, Stephen, Kotsonis, Andrew, Martin, John, Mitchell, Mel, Smith, Bart, Jenkin, J., Neilson, J, Orr, Meredith, Peterson, J., Rosengren, N., Rowan, Jim, Rowe, R., Sargeant, Ian, Stone, Timothy, White, Susan
- Authors: Joyce, Edmund , Webb, John , Dahlhaus, Peter , Grimes, Ken , Hill, Stephen , Kotsonis, Andrew , Martin, John , Mitchell, Mel , Smith, Bart , Jenkin, J. , Neilson, J , Orr, Meredith , Peterson, J. , Rosengren, N. , Rowan, Jim , Rowe, R. , Sargeant, Ian , Stone, Timothy , White, Susan
- Date: 2003
- Type: Text , Book chapter
- Relation: Geology of Victoria Chapter p. 533-561
- Full Text:
- Reviewed:
- Authors: Joyce, Edmund , Webb, John , Dahlhaus, Peter , Grimes, Ken , Hill, Stephen , Kotsonis, Andrew , Martin, John , Mitchell, Mel , Smith, Bart , Jenkin, J. , Neilson, J , Orr, Meredith , Peterson, J. , Rosengren, N. , Rowan, Jim , Rowe, R. , Sargeant, Ian , Stone, Timothy , White, Susan
- Date: 2003
- Type: Text , Book chapter
- Relation: Geology of Victoria Chapter p. 533-561
- Full Text:
- Reviewed:
Grampians Natural Disaster Research
- Thompson, Helen, Dahlhaus, Peter, Greymore, Michelle, Courvisanos, Jerry, Sheil, Helen, Ollerenshaw, Alison, McDonald, Kelsey, Corbett, Jennifer
- Authors: Thompson, Helen , Dahlhaus, Peter , Greymore, Michelle , Courvisanos, Jerry , Sheil, Helen , Ollerenshaw, Alison , McDonald, Kelsey , Corbett, Jennifer
- Type: Text , Dataset
- Full Text: false
- Description: The Grampians is located approximately 220km west of Melbourne and is accessible via the major towns of Halls Gap and Dunkeld. The Grampians National Park covers approximately 168,110ha and is listed on the Australian Heritage Database National Heritage List and other localities in the Grampians are listed on the Register of the National Estate, which testifies to the significance of the landform and its attraction as a tourism destination. In January 2011, heavy rains in the Grampians triggered more than 190 landslides, some of which were up to 3km long and caused considerable damage to private property, roads, walking tracks and public infrastructure in the region. The Halls Gap Community Safety Committee commissioned a geotechnical assessment which concluded that the majority of the landslides were debris flows triggered by 1 in 100 year rainfall. In February 2011 and as a consequence of the January 2011 flooded sections of Halls Gap were evacuated due to heavy rain and the predicted threat of landslides impacting on parts of the town. Although the rain did not eventuate, the evaluated communities reported concern about the social and financial impact of the evacuations. In response to these landslide events in the Grampians National Park, Federation University Australia was engaged by Northern Grampians Shire to investigate the social, economic and environmental impact of the events, which resulted in significant impact to the environment and communities surrounding the Park. The Grampians Natural Disaster Research website is part of an interoperable web-GIS maintained by the Centre for eResearch and Digital Innovation(CeRDI) at Federation University Australia (FedUni). Project aim: The overall objective of the Grampians Natural Disaster Research project is to document the environmental, economic and social impacts of the 2011 flood and landslide events as they impacted on individuals, businesses and community organisations, and representatives from government and non-government organisations (including emergency services organisations closely involved with the disaster management response to the 2011 floods in the Grampians region), and to integrate these into a consolidated inventory. To achieve this, the following key questions emerged: 1. What was the social impact (perceived and actual) of the 2011 event on communities in the Grampians, especially Halls Gap 2. What were the short and long term impacts (environmental, social and economic) of this event on these communities? 3. What was the actual impact (environmental, social and economic) on the communities as perceived by local and regional agencies (government)? 4. How could disaster management processes reduce the social and economic impact of any natural disaster event in the future, for this region? This research will provide a greater understanding of the impact of the Grampians natural disaster on communities directly impacted by the floods and landslides. The results may be used to inform appropriate risk and emergency services management strategies to minimise the impact of such events on communities in the future. This information can be used for future disaster management and planning in the Grampians region, and beyond, where many communities around the state require informed disaster management in response to climate change. Project partners: Northern Grampians Shire Council, Ararat Rural City Council, Horsham Rural City Council, VicRoads, Parks Victoria, Southern Grampians Shire Council, Country Fire Authority, and with support from the State Emergency Service and Federation University Australia.
- Description: The Grampians is located approximately 220km west of Melbourne and is accessible via the major towns of Halls Gap and Dunkeld. The Grampians National Park covers approximately 168,110ha and is listed on the Australian Heritage Database National Heritage List and other localities in the Grampians are listed on the Register of the National Estate, which testifies to the significance of the landform and its attraction as a tourism destination. In January 2011, heavy rains in the Grampians triggered more than 190 landslides, some of which were up to 3km long and caused considerable damage to private property, roads, walking tracks and public infrastructure in the region. The Halls Gap Community Safety Committee commissioned a geotechnical assessment which concluded that the majority of the landslides were debris flows triggered by 1 in 100 year rainfall. In February 2011 and as a consequence of the January 2011 flooded sections of Halls Gap were evacuated due to heavy rain and the predicted threat of landslides impacting on parts of the town. Although the rain did not eventuate, the evaluated communities reported concern about the social and financial impact of the evacuations. In response to these landslide events in the Grampians National Park, Federation University Australia was engaged by Northern Grampians Shire to investigate the social, economic and environmental impact of the events, which resulted in significant impact to the environment and communities surrounding the Park. The Grampians Natural Disaster Research website is part of an interoperable web-GIS maintained by the Centre for eResearch and Digital Innovation(CeRDI) at Federation University Australia (FedUni). Project aim: The overall objective of the Grampians Natural Disaster Research project is to document the environmental, economic and social impacts of the 2011 flood and landslide events as they impacted on individuals, businesses and community organisations, and representatives from government and non-government organisations (including emergency services organisations closely involved with the disaster management response to the 2011 floods in the Grampians region), and to integrate these into a consolidated inventory. To achieve this, the following key questions emerged: 1. What was the social impact (perceived and actual) of the 2011 event on communities in the Grampians, especially Halls Gap? 2. What were the short and long term impacts (environmental, social and economic) of this event on these communities? 3. What was the actual impact (environmental, social and economic) on the communities as perceived by local and regional agencies (government)? 4. How could disaster management processes reduce the social and economic impact of any natural disaster event in the future, for this region? This research will provide a greater understanding of the impact of the Grampians natural disaster on communities directly impacted by the floods and landslides. The results may be used to inform appropriate risk and emergency services management strategies to minimise the impact of such events on communities in the future. This information can be used for future disaster management and planning in the Grampians region, and beyond, where many communities around the state require informed disaster management in response to climate change. Project partners: Northern Grampians Shire Council, Ararat Rural City Council, Horsham Rural City Council, VicRoads, Parks Victoria, Southern Grampians Shire Council, Country Fire Authority, and with support from the State Emergency Service and Federation University Australia.
Groundwater flows & groundwater - surface water interactions in the Corangamite CMA region
- Dahlhaus, Peter, Barton, Andrew, Cox, Jim, Herczeg, Annette
- Authors: Dahlhaus, Peter , Barton, Andrew , Cox, Jim , Herczeg, Annette
- Date: 2006
- Type: Text , Book chapter
- Relation: Regolith 2006: Consolidation and Dispersion of Ideas Chapter p. 377-384
- Full Text:
- Reviewed:
- Description: The Corangamite Catchment Management Authority (CMA) region occupies an area of 13,340 km2 in southwestern Victoria, and consists of four major river basins, namely Moorrabool River, Barwon River, Lake Corangamite and Otway Coast. The region is of high economic value to the State with much of the land supporting agricultural and forestry industries.
- Description: B1
- Description: 2003002067
- Authors: Dahlhaus, Peter , Barton, Andrew , Cox, Jim , Herczeg, Annette
- Date: 2006
- Type: Text , Book chapter
- Relation: Regolith 2006: Consolidation and Dispersion of Ideas Chapter p. 377-384
- Full Text:
- Reviewed:
- Description: The Corangamite Catchment Management Authority (CMA) region occupies an area of 13,340 km2 in southwestern Victoria, and consists of four major river basins, namely Moorrabool River, Barwon River, Lake Corangamite and Otway Coast. The region is of high economic value to the State with much of the land supporting agricultural and forestry industries.
- Description: B1
- Description: 2003002067
- Dahlhaus, Peter, Evans, Timothy, Nathan, Erica, Cox, Jim, Simmons, Craig
- Authors: Dahlhaus, Peter , Evans, Timothy , Nathan, Erica , Cox, Jim , Simmons, Craig
- Date: 2010
- Type: Text , Journal article
- Relation: Hydrogeology Journal Vol. 18, no. 7 (2010), p. 1611-1623
- Full Text: false
- Reviewed:
- Description: The connection between the removal of native vegetation, rising water tables and increasing stream salinity has been established for many catchments across Australia. However, the West Moorabool River in south west Victoria is an example of a catchment where there has been little discernable effect on groundwater levels following land clearing. Over the past 150 years, a significant portion of the catchment has been cleared of dense forest for agricultural development. Historic standing water-level records from 1870-1871 and 1881 are compared with contemporary measurements (1970s to 2007) recorded in the government bore databases. The data show that the earliest recorded groundwater levels are well within the seasonal range of values observed today. By integrating geology and hydrogeology with historical observations of groundwater levels, climate data and land use, the contemporary field observations of stream salinity are linked to the changed water use and shift in rainfall. In contrast to the normally accepted axiom, reafforestation as a management strategy to mitigate the rising salinity in the West Moorabool River catchment would seem inappropriate. © 2010 Springer-Verlag.
- Description: The connection between the removal of native vegetation, rising water tables and increasing stream salinity has been established for many catchments across Australia. However, the West Moorabool River in south west Victoria is an example of a catchment where there has been little discernable effect on groundwater levels following land clearing. Over the past 150 years, a significant portion of the catchment has been cleared of dense forest for agricultural development. Historic standing water-level records from 1870-1871 and 1881 are compared with contemporary measurements (1970s to 2007) recorded in the government bore databases. The data show that the earliest recorded groundwater levels are well within the seasonal range of values observed today. By integrating geology and hydrogeology with historical observations of groundwater levels, climate data and land use, the contemporary field observations of stream salinity are linked to the changed water use and shift in rainfall. In contrast to the normally accepted axiom, reafforestation as a management strategy to mitigate the rising salinity in the West Moorabool River catchment would seem inappropriate. © 2010 Springer-Verlag.
Historic urban landscapes and visualising Ballarat : Citizen participation for sustainable urban planning and design
- Murphy, Angela, Dahlhaus, Peter, Thompson, Helen
- Authors: Murphy, Angela , Dahlhaus, Peter , Thompson, Helen
- Date: 2016
- Type: Text , Conference proceedings , Conference paper
- Relation: 3rd Annual Conference of Research@Locate, R@Loc 2016; Melbourne, Australia; 12th-14th April 2016; published in CEUR Workshop Proceedings
- Full Text:
- Description: Technological innovation has provided enhanced capacity for knowledge building, for connection and for improved infrastructure planning in the development of the modern city. In parallel to the building of technology supported urban planning and design capacity, a debate has emerged around the need to maximise citizen participation in urban planning. The role of identity, culture and social context has been assessed as being as integral to sustainability in urban planning as is infrastructure management. In 2011 UNESCO, through the mechanism of the recommendation for Historic Urban Landscapes (HUL), created an imperative for the overt recognition of the role of culture, place and identity in sustainable urban planning. The City of Ballarat, Victoria, was the first of a series of international cities to pilot HUL and commit to inclusive citizen based collaboration in urban planning. Through online technology, a platform for partnership building was established. Developed and supported through the Centre for eResearch and Digital Innovation at Federation University Australia, the HUL and Visualising Ballarat portals track the diversity of urban landscapes-from built environment to geomorphology to cultural identity-and facilitate their inclusion in planning and resource allocation. Crowdsourcing was promoted as pivotal in this process, while spatial innovation provided a means through which to bring to life the notion of distinctiveness, identity and place. Through mapping intangibles across complex and diverse groups within community, the potential for improving the quality and management of the planning process was found to be enhanced. Local Area Planning provided a mechanism for a conceptual alignment of past and present and the voice of community has gained a stronger (and more disruptive) voice in determining what communities' value within their lived environment. This shift was assessed as playing an important, and increasingly recognised, role in sustainable urban planning and design.
- Description: CEUR Workshop Proceedings
- Authors: Murphy, Angela , Dahlhaus, Peter , Thompson, Helen
- Date: 2016
- Type: Text , Conference proceedings , Conference paper
- Relation: 3rd Annual Conference of Research@Locate, R@Loc 2016; Melbourne, Australia; 12th-14th April 2016; published in CEUR Workshop Proceedings
- Full Text:
- Description: Technological innovation has provided enhanced capacity for knowledge building, for connection and for improved infrastructure planning in the development of the modern city. In parallel to the building of technology supported urban planning and design capacity, a debate has emerged around the need to maximise citizen participation in urban planning. The role of identity, culture and social context has been assessed as being as integral to sustainability in urban planning as is infrastructure management. In 2011 UNESCO, through the mechanism of the recommendation for Historic Urban Landscapes (HUL), created an imperative for the overt recognition of the role of culture, place and identity in sustainable urban planning. The City of Ballarat, Victoria, was the first of a series of international cities to pilot HUL and commit to inclusive citizen based collaboration in urban planning. Through online technology, a platform for partnership building was established. Developed and supported through the Centre for eResearch and Digital Innovation at Federation University Australia, the HUL and Visualising Ballarat portals track the diversity of urban landscapes-from built environment to geomorphology to cultural identity-and facilitate their inclusion in planning and resource allocation. Crowdsourcing was promoted as pivotal in this process, while spatial innovation provided a means through which to bring to life the notion of distinctiveness, identity and place. Through mapping intangibles across complex and diverse groups within community, the potential for improving the quality and management of the planning process was found to be enhanced. Local Area Planning provided a mechanism for a conceptual alignment of past and present and the voice of community has gained a stronger (and more disruptive) voice in determining what communities' value within their lived environment. This shift was assessed as playing an important, and increasingly recognised, role in sustainable urban planning and design.
- Description: CEUR Workshop Proceedings
- MacEwan, Richard, Dahlhaus, Peter, Fawcett, Jonathon
- Authors: MacEwan, Richard , Dahlhaus, Peter , Fawcett, Jonathon
- Date: 2006
- Type: Text , Conference paper
- Relation: Paper presented at 18th World Congress of Soil Science, Philadelphia, Pennsylvania, USA : 9th-15th July 2006
- Full Text: false
- Description: Soil is the component in the landscape along with land use management and vegetation that determines all the partitioning of water balance components that affect surface hydrology (runoff to waterways and wetlands) and recharge to groundwater. Most soil and land degradation processes are hydrologically driven or depend on hydrological conditions. Conceptual models and quantification of erosion processes (wind erosion is a result of lack of moisture), land salinisation, acidification, nutrient loss and impacts of nutrient movement, all require an understanding of the role of hydrology specific to the landscape under consideration. In Australia, salinity is a major problem for agriculture in irrigated and rainfed (‘dryland agriculture) land and has significant economic impacts in urban areas too. A general water balance approach has been used to conceptualise the processes and the problem. Large scale clearing of treed landscapes in favour of annual crops and pastures has been seen as the major change in the water balance of Australian landscapes since settlement. This change in vegetation and water use is frequently cited as the most significant factor in causing land salinisation, which is attributed to increase in groundwater recharge, mobilisation of salts, groundwater rise and discharge. We provide three case studies for landscapes that require quite different conceptual models and all of which are in some degree counter to the developed conventional wisdom regarding increased salinity. These case studies illustrate the importance of developing an appropriate conceptual model of hydrological processes in the ‘critical zone', in particular for implementation of policy and practice in land management. Case 1. South Eastern Dundas Tablelands, Victoria. In this landscape the apparent degradation of land by salinity is the result of changed hydrological conditions but has not resulted from increased groundwater discharge or increased salt accumulation. We have evidence that groundwater recharge and discharge have not increased since clearing of the landscape during European settlement. Laboratory hydrological studies in large diameter cores from soil and regolith, interpretation of redoximorphic features and functional horizons in the field and analysis of historical records of streamflow support this hypothesis. We also show that the degradation of salt affected areas is due to fluctuating waterlogging and drying of the soil causing cyclic redox conditions and changes in soil chemistry. Case 2. Dissected Coastal Plain, Victoria. In this landscape, slowly permeable marine clay overlain by coastal sand deposits provides a classic ‘layer cake' picture of differentially permeable material. The unconsolidated nature of the clays and the relatively deep dissection that exists presents a landslide prone landscape and one that also shows the effects of salting in low areas. In this region we show that upward pressure from a deep (200 m) confined freshwater aquifer maintains saturation in the marine clay and that waterlogging, landslides and salinity result from hydrological dynamics of the upper few metres of regolith and soil. Evidence has been collected from field survey, groundwater studies, geotechnical measurements and regolith mineralogy. Case 3. Granite Uplands, Victoria. In this landscape we have interpreted redoximorphic features of functional horizons and measurement of shallow groundwater salinities in a toposequence. Our conceptual model is of a regional saline groundwater system discharging in springs relatively high in the landscape. We show the role of shallow throughflow of water in the soil in spreading salt from these point sources, simultaneously diluting the effect of salinity in local drainage lines but increasing the area of salt affected land upslope from the drainage lines. In each case study area we have been compelled to develop an understanding that fits the landscape realities. We have used empirical observations and interpretation of soil morphology, regolith and groundwater characteristics, laboratory studies, soil chemistry and hydro-chemistry to support our work. We stress the importance of this approach integrating the sciences of hydrology, pedology, chemistry and geology in coming to appropriate conclusions about land degradation processes, especially if we are to advise on land management investment and policy to tackle degradation.
- Description: 2003002070
- MacEwan, Richard, Dahlhaus, Peter, Fawcett, Jonathon
- Authors: MacEwan, Richard , Dahlhaus, Peter , Fawcett, Jonathon
- Date: 2012
- Type: Text , Book chapter
- Relation: Hydropedology p. 449-481
- Full Text: false
- Reviewed:
Implementing the AGS landslide risk management guidelines in a municipal planning scheme : A case study in the Colac Otway Shire, Victoria
- Dahlhaus, Peter, Miner, Anthony
- Authors: Dahlhaus, Peter , Miner, Anthony
- Date: 2002
- Type: Text , Journal article
- Relation: Australian Geomechanics Journal Vol. 37, no. 2 (2002), p. 199-211
- Full Text:
- Description: 2003003866
- Authors: Dahlhaus, Peter , Miner, Anthony
- Date: 2002
- Type: Text , Journal article
- Relation: Australian Geomechanics Journal Vol. 37, no. 2 (2002), p. 199-211
- Full Text:
- Description: 2003003866
Improving access to groundwater data using GroundWaterML2
- Simons, Bruce, Nation, Eloise, Dahlhaus, Peter
- Authors: Simons, Bruce , Nation, Eloise , Dahlhaus, Peter
- Date: 2015
- Type: Text , Conference proceedings
- Relation: 36th Hydrology and Water Resources Symposium: The Art and Science of Water, HWRS 2015; Hobart, Tasmania; 7th-10th December 2015 p. 609-616
- Full Text: false
- Reviewed:
- Description: This paper describes the preliminary development and use in the Australian context of a standard designed to exchange groundwater related data. The storage and management of groundwater data is distributed across many agencies and organisations, in disparate databases and formats. Discovering, accessing, interpreting, reformatting and using this data can present considerable challenges for the end-user. Groundwater data interoperability consideration of the use of communication protocols to achieve technical interoperability, the use of common data models to achieve syntactic interoperability and the use of controlled vocabularies to achieve semantic interoperability. GroundWaterML2 is a Geography Mark-up Language (GML) application developed by the Open Geospatial Consortium (OGC) Hydro Domain Working Group. It is intended as a standard for the transfer of groundwater feature data, including data about water wells, aquifers, and related entities. The OGC initiated an interoperability experiment to develop and test the model for commercial, technical, scientific, environmental and policy use cases. CSIRO, the Bureau of Meteorology and Federation University Australia contributed to the design of GroundWaterML2, and established separate OGC web services delivering data out of the National Groundwater Information System (NGIS) and Federation University Australia databases. These services delivered borehole location and construction details, downhole geology, hydrogeologic unit information, groundwater discharge properties, and groundwater fluid property observations. Bringing these services to production would allow users and clients, such as the 'Visualising Victoria's Groundwater' and 'Australian Groundwater Explorer' portals, to access data from multiple providers in a standard format. © 2015, Engineers Australia. All rights reserved.
- Description: The Art and Science of Water - 36th Hydrology and Water Resources Symposium, HWRS 2015
In search of pragmatic soil moisture mapping at the field scale : a review
- Weir, Peter, Dahlhaus, Peter
- Authors: Weir, Peter , Dahlhaus, Peter
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Smart Agricultural Technology Vol. 6, no. (2023), p.
- Full Text:
- Reviewed:
- Description: Soil moisture is a major limiting factor in most dryland agricultural production systems around the globe. In dryland agriculture the amount of water available to grow a crop is determined primarily by the in-season rainfall and the amount of water stored in the soil profile prior to seeding of the crop. Soil water content and water storage capacity are key parameters. Soil moisture data measurements are a compromise between the spatial scale of the investigated site, the required spatial resolution, and the depth of investigation of the applied method. A bibliographic search of the measurement of soil moisture content at field-scale was done, giving an overview of current practices available to determine the spatial variability within a field, and its applicability to farm management practices. Articles published between April 2013 and March 2023 were searched, retaining only the articles with horizontal resolution less than or equal to 100 m, minimum vertical support at a depth greater than or equal to 30 cm from the soil surface, a minimum of two vertical layer depths, and the topic of the document was associated with the measurement of soil moisture at field-scale. The results of this review highlight progress in the past decade but currently there is no one method that can achieve absolute continuous spatial soil moisture in 3D at the field level. Some areas of research show promise but is still some distance away from a reliable, timely, and accurate soil moisture mapping required for many extensive dryland farming systems. © 2023
- Authors: Weir, Peter , Dahlhaus, Peter
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Smart Agricultural Technology Vol. 6, no. (2023), p.
- Full Text:
- Reviewed:
- Description: Soil moisture is a major limiting factor in most dryland agricultural production systems around the globe. In dryland agriculture the amount of water available to grow a crop is determined primarily by the in-season rainfall and the amount of water stored in the soil profile prior to seeding of the crop. Soil water content and water storage capacity are key parameters. Soil moisture data measurements are a compromise between the spatial scale of the investigated site, the required spatial resolution, and the depth of investigation of the applied method. A bibliographic search of the measurement of soil moisture content at field-scale was done, giving an overview of current practices available to determine the spatial variability within a field, and its applicability to farm management practices. Articles published between April 2013 and March 2023 were searched, retaining only the articles with horizontal resolution less than or equal to 100 m, minimum vertical support at a depth greater than or equal to 30 cm from the soil surface, a minimum of two vertical layer depths, and the topic of the document was associated with the measurement of soil moisture at field-scale. The results of this review highlight progress in the past decade but currently there is no one method that can achieve absolute continuous spatial soil moisture in 3D at the field level. Some areas of research show promise but is still some distance away from a reliable, timely, and accurate soil moisture mapping required for many extensive dryland farming systems. © 2023
- Aucote, Helen, Miner, Anthony, Dahlhaus, Peter
- Authors: Aucote, Helen , Miner, Anthony , Dahlhaus, Peter
- Date: 2012
- Type: Text , Journal article
- Relation: Psychology, Health and Medicine Vol. 17, no. 5 (2012), p. 522-529
- Full Text: false
- Reviewed:
- Description: The aim of the present study was to investigate the factors relating to non-adherence to warning signs about falling rocks from coastal cliff faces. Face-to-face interviews (n=62) in a naturalistic setting (in the vicinity of a high-risk rockfall area) were conducted to investigate attention to and comprehension of warning signs, as well as beliefs relating to non-adherence of the signage. It was found that, while most participants could correctly identify the danger in the area and had noticed the warning signage, less than half of the participants could correctly interpret the signage. The perception of danger did not differ significantly between the participants who had, or had not, entered the high-risk zone. Differences in knowledge and beliefs between local residents and visitors to the area were identified. It was concluded that the warning signs did not provide enough detail for people to make informed decisions about safe behaviours. Comprehension of the signage may have been hampered by a lack of prior-knowledge of the particular risk, a failure to think carefully about the situation (i.e. low-effort processing), and the pictorial representation on the signs misleading the participants as to the true danger. © 2012 Copyright Taylor and Francis Group, LLC.
Kinematic assessment of slopes at handlebar hill open cut mine, Mt. Isa, Queensland, Australia
- Almandalawi, Maged, You, Greg, Dowling, Kim, Dahlhaus, Peter
- Authors: Almandalawi, Maged , You, Greg , Dowling, Kim , Dahlhaus, Peter
- Date: 2016
- Type: Text , Journal article
- Relation: International Journal of GEOMATE Vol. 10, no. 1 (2016), p. 1575-1583
- Full Text: false
- Reviewed:
- Description: A complete kinematic analysis was conducted for the west slope at the Handlebar Hill mine using the Rocscience/Dips 6.0 software. The west slope was divided into three zones: W1 (south-west), W2 (mid-west) and W3 (north-west), which were then subdivided into nine small elements to increase the certainty of parameters. This enabled the analysis to define the potential kinematics of motions of critical structures. Small scale joints, bedding, faults, shears along the discontinuities were plotted and the data were analysed systematically. The results indicated that the potential toppling mode created by discontinuities can lead to direct/flexural toppling failure. The kinematic feasibility also revealed that the intersections of the discontinuities within the critical zone can structurally control the wedge planar failure modes. The results will assist the mine geotechnical engineers to understand the potential slope failure mechanisms and their locations. © 2016, International Journal of GEOMATE.
- Dahlhaus, Peter, Nicholson, Cameron, Ryan, Bret, MacLeod, Andrew, Milne, Robert
- Authors: Dahlhaus, Peter , Nicholson, Cameron , Ryan, Bret , MacLeod, Andrew , Milne, Robert
- Date: 2018
- Type: Text , Journal article
- Relation: New Zealand Journal of Agricultural Research Vol. 61, no. 3 (2018), p. 333-339
- Full Text: false
- Reviewed:
- Description: Detailed soil data has been collected in the Corangamite region of south-east Australia for over 80 years, as a testament to the productive value of the region’s agricultural soils. Soil science over that period has resulted in soil maps, soil investigation sites and archival materials that provide valuable baseline data for the analysis of trends over time. This legacy data has been brought together with contemporary data in the award-winning Soil Health Knowledge Base, an Internet portal based on spatial data infrastructure that interoperably federates data (open data, research data, industry data, sensor data, legacy data, crowdsourced data … any available data). The portal provides the best available data sources for research and consulting, as well as functions for both the private reward and the public good. The ultimate intent is to provide timely decision support for agricultural enterprises and catchment managers to protect, enhance and restore soil health.
Livestock data – is it there and is it FAIR? A systematic review of livestock farming datasets in Australia
- Bahlo, Christiane, Dahlhaus, Peter
- Authors: Bahlo, Christiane , Dahlhaus, Peter
- Date: 2021
- Type: Text , Journal article
- Relation: Computers and Electronics in Agriculture Vol. 188, no. (2021), p.
- Full Text:
- Reviewed:
- Description: The global adoption of the FAIR principles for scientific data: findable, accessible, interoperable and reusable, has been relatively slow in agriculture, compared to other disciplines. A recent review of the literature showed that the use of precision farming technologies and the development and adoption of open data standards was particularly low in extensive livestock farming. However, a plethora of public datasets exist that have the potential to be used to inform precision farming decision tools. Using extensive livestock farming in Australia as example, we investigate the quantity and quality of datasets available via a systematic dataset review. This systematic review of datasets begins with a search of open data catalogues and querying these to find datasets. Software scripts are developed and used to query the Application Programming Interfaces (APIs) of many of the large data catalogues in Australia, while catalogues without public APIs are queried manually via available web portals. Following the systematic search, a combined list of all datasets is collated and tested for FAIRness and other quality metrics. The contribution of this work is the resulting overview of the state of open datasets within the livestock farming domain on the one hand, but also the development of a systematic dataset search strategy, reusable methods and software scripts. © 2021 Elsevier B.V.
- Authors: Bahlo, Christiane , Dahlhaus, Peter
- Date: 2021
- Type: Text , Journal article
- Relation: Computers and Electronics in Agriculture Vol. 188, no. (2021), p.
- Full Text:
- Reviewed:
- Description: The global adoption of the FAIR principles for scientific data: findable, accessible, interoperable and reusable, has been relatively slow in agriculture, compared to other disciplines. A recent review of the literature showed that the use of precision farming technologies and the development and adoption of open data standards was particularly low in extensive livestock farming. However, a plethora of public datasets exist that have the potential to be used to inform precision farming decision tools. Using extensive livestock farming in Australia as example, we investigate the quantity and quality of datasets available via a systematic dataset review. This systematic review of datasets begins with a search of open data catalogues and querying these to find datasets. Software scripts are developed and used to query the Application Programming Interfaces (APIs) of many of the large data catalogues in Australia, while catalogues without public APIs are queried manually via available web portals. Following the systematic search, a combined list of all datasets is collated and tested for FAIRness and other quality metrics. The contribution of this work is the resulting overview of the state of open datasets within the livestock farming domain on the one hand, but also the development of a systematic dataset search strategy, reusable methods and software scripts. © 2021 Elsevier B.V.
Losing stormwater: 60 years of urbanisation and reduced downstream flow
- Ebbs, David, Dahlhaus, Peter, Barton, Andrew, Kandra, Harpreet
- Authors: Ebbs, David , Dahlhaus, Peter , Barton, Andrew , Kandra, Harpreet
- Date: 2018
- Type: Text , Conference paper
- Relation: 10th International Conference on Water Sensitive Urban Design: Creating water sensitive communities (WSUD 2018 & Hydropolis 2018), 12-15 February 2018, Perth, Western Australia p. 142-151
- Full Text:
- Reviewed:
- Description: The potential for stormwater to supplement traditional water supplies from upstream catchments or groundwater is high, with claims that the quantity of additional runoff from impervious surfaces in a modern city in a temperate climate is greater than the total potable water demand. To ensure the success of Integrated Urban Water Management, it must consider the broad context of catchment management and the cumulative effect of all factors including river health. Ballarat, an inland city of approximately 100,000 people in south-eastern Australia, has many attributes necessary to potentially exploit stormwater. Given the doubling of population, tripling of residences and 90% increase in average residence size over the past 60 years, over which time flow data is available for the downstream waterway, it might be expected that the flow in the river downstream of the city within the catchment would reflect additional stormwater runoff. However, no increase in flow was detected between 1957 and 1996 while flow over the past 20 years has reduced by 60%. A water balance shows this decrease was not due to extractions as the stream has been a consistent net receiver of water from other catchments. Modelling data from the Australian Water Resources Assessment indicates that the reduction in streamflow is double what might be expected due to climatic variations. Between 1957 and 1996 there was no significant difference between modelled runoff and actual flow, however from 1997 onwards there is a significant divergence. While lower runoff may be expected during the period of drought, the rainfall-runoff relationship does not return to previous levels during latter years of rainfall. The effect is greater during higher flow months, which has significance when identifying potential additional water resources. Base flow has been reduced to the point where dry weather flow is reliant on waste water treatment plant and mine discharge. This study indicates that while impervious surfaces generate higher runoff which can cause environmental damage, making stormwater an attractive water source, consideration must be given to the impacts on the whole catchment when assessing alternative supply options.
- Authors: Ebbs, David , Dahlhaus, Peter , Barton, Andrew , Kandra, Harpreet
- Date: 2018
- Type: Text , Conference paper
- Relation: 10th International Conference on Water Sensitive Urban Design: Creating water sensitive communities (WSUD 2018 & Hydropolis 2018), 12-15 February 2018, Perth, Western Australia p. 142-151
- Full Text:
- Reviewed:
- Description: The potential for stormwater to supplement traditional water supplies from upstream catchments or groundwater is high, with claims that the quantity of additional runoff from impervious surfaces in a modern city in a temperate climate is greater than the total potable water demand. To ensure the success of Integrated Urban Water Management, it must consider the broad context of catchment management and the cumulative effect of all factors including river health. Ballarat, an inland city of approximately 100,000 people in south-eastern Australia, has many attributes necessary to potentially exploit stormwater. Given the doubling of population, tripling of residences and 90% increase in average residence size over the past 60 years, over which time flow data is available for the downstream waterway, it might be expected that the flow in the river downstream of the city within the catchment would reflect additional stormwater runoff. However, no increase in flow was detected between 1957 and 1996 while flow over the past 20 years has reduced by 60%. A water balance shows this decrease was not due to extractions as the stream has been a consistent net receiver of water from other catchments. Modelling data from the Australian Water Resources Assessment indicates that the reduction in streamflow is double what might be expected due to climatic variations. Between 1957 and 1996 there was no significant difference between modelled runoff and actual flow, however from 1997 onwards there is a significant divergence. While lower runoff may be expected during the period of drought, the rainfall-runoff relationship does not return to previous levels during latter years of rainfall. The effect is greater during higher flow months, which has significance when identifying potential additional water resources. Base flow has been reduced to the point where dry weather flow is reliant on waste water treatment plant and mine discharge. This study indicates that while impervious surfaces generate higher runoff which can cause environmental damage, making stormwater an attractive water source, consideration must be given to the impacts on the whole catchment when assessing alternative supply options.
Making the invisible visible : The impact of federating groundwater data in Victoria, Australia
- Dahlhaus, Peter, Murphy, Angela, MacLeod, Andrew, Thompson, Helen, McKenna, Kirsten, Ollerenshaw, Alison
- Authors: Dahlhaus, Peter , Murphy, Angela , MacLeod, Andrew , Thompson, Helen , McKenna, Kirsten , Ollerenshaw, Alison
- Date: 2016
- Type: Text , Journal article
- Relation: Journal of Hydroinformatics Vol. 18, no. 2 (2016), p. 238-255
- Full Text:
- Reviewed:
- Description: The Visualising Victoria's Groundwater (VVG) web portal federates groundwater data for the State of Victoria, Australia, thus making legacy data, government datasets, research data and community sourced data and observations visible to the public. The portal is innovative because it was developed outside of the government and offers real-time accessto remote authoritative databases by integrating the interoperable web services they each provide. It includes tools for data querying and 3D visualisations that were designed to meet end-user needs and educate the broader community about a normally invisible resource. The social impact of the web portal was measured using multidisciplinary research that employed survey instruments, expert reference groups, and internet analytics to explore the extent to which the web portal has supported decision making by governments, industry, researchers and the community. The research found that single access, multiple data set web portals enhance capacity by providing timely, informed and accurate responses to answer queries and increase productivity by saving time. The provision of multiple datasets from disparate sources within a single portal has changed practices in the Victorian groundwater industry. © 2016 The Authors.
- Authors: Dahlhaus, Peter , Murphy, Angela , MacLeod, Andrew , Thompson, Helen , McKenna, Kirsten , Ollerenshaw, Alison
- Date: 2016
- Type: Text , Journal article
- Relation: Journal of Hydroinformatics Vol. 18, no. 2 (2016), p. 238-255
- Full Text:
- Reviewed:
- Description: The Visualising Victoria's Groundwater (VVG) web portal federates groundwater data for the State of Victoria, Australia, thus making legacy data, government datasets, research data and community sourced data and observations visible to the public. The portal is innovative because it was developed outside of the government and offers real-time accessto remote authoritative databases by integrating the interoperable web services they each provide. It includes tools for data querying and 3D visualisations that were designed to meet end-user needs and educate the broader community about a normally invisible resource. The social impact of the web portal was measured using multidisciplinary research that employed survey instruments, expert reference groups, and internet analytics to explore the extent to which the web portal has supported decision making by governments, industry, researchers and the community. The research found that single access, multiple data set web portals enhance capacity by providing timely, informed and accurate responses to answer queries and increase productivity by saving time. The provision of multiple datasets from disparate sources within a single portal has changed practices in the Victorian groundwater industry. © 2016 The Authors.
Matching the model to the available data to predict wheat, barley, or canola yield : a review of recently published models and data
- Clark, Robert, Dahlhaus, Peter, Robinson, Nathan, Larkins, Jo-ann, Morse-McNabb, Elizabeth
- Authors: Clark, Robert , Dahlhaus, Peter , Robinson, Nathan , Larkins, Jo-ann , Morse-McNabb, Elizabeth
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Agricultural Systems Vol. 211, no. (2023), p.
- Full Text:
- Reviewed:
- Description: CONTEXT: Continued increases in global population and rising living standards in many countries are driving a surge in demand for energy and protein-rich foods. Wheat, barley, and canola are important crops that are grown and traded globally. However, climate change, geopolitical tensions and competition from other crops threaten the ability to satisfy global demand. Accurate predictions of crop production and its spatial variation can play a significant role in their reliable and efficient production, marketing, and distribution. OBJECTIVE: This review examined recently published models and data used to predict wheat, barley, and canola yield to identify which factors produced the best yield predictions. METHODS: A literature search was conducted across the Scopus, EBSCOhost and Web of Science databases over seven years between 2015 and 2021. Data extracted from the papers identified by the literature search were investigated using graphical and quantitative analytical techniques to determine if the type of algorithm, input data, prediction timing, output scale or extent and climate variability both in isolation and in combination affected the model's predictive ability. RESULTS AND CONCLUSIONS: The literature search produced 11, 908 results which was reduced to 118 papers after applying the review criteria (peer reviewed papers focussed on models predicting yield at greater than plot scale across extensive areas using accessible data). China produced almost one third of all yield prediction models over the study period and 87% of models were used to predict wheat yield. Statistical models were the most common algorithm in most regions and in total. However, there was a surge in machine learning models after 2018. They were the most common model from 2019 to 2021, with one third developed in China. The review concluded that only the choice of modelling technique and the input data had a significant effect on model performance with the machine learning techniques Random Forest, Boosting algorithms and Deep Learning models as well as process-based Light Use Efficiency models that used a combination of remotely sensed and agrometeorological data performing best. SIGNIFICANCE: The review showed that matching the model to the available data could improve the ability to predict wheat, barley or canola yield. The use of quantitative statistical techniques in this review, should give modellers trying to predict wheat, barley or canola yield more confidence in matching their approach to the available data than previous reviews that relied on visual interpretation of data. © 2023 The Authors
- Authors: Clark, Robert , Dahlhaus, Peter , Robinson, Nathan , Larkins, Jo-ann , Morse-McNabb, Elizabeth
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Agricultural Systems Vol. 211, no. (2023), p.
- Full Text:
- Reviewed:
- Description: CONTEXT: Continued increases in global population and rising living standards in many countries are driving a surge in demand for energy and protein-rich foods. Wheat, barley, and canola are important crops that are grown and traded globally. However, climate change, geopolitical tensions and competition from other crops threaten the ability to satisfy global demand. Accurate predictions of crop production and its spatial variation can play a significant role in their reliable and efficient production, marketing, and distribution. OBJECTIVE: This review examined recently published models and data used to predict wheat, barley, and canola yield to identify which factors produced the best yield predictions. METHODS: A literature search was conducted across the Scopus, EBSCOhost and Web of Science databases over seven years between 2015 and 2021. Data extracted from the papers identified by the literature search were investigated using graphical and quantitative analytical techniques to determine if the type of algorithm, input data, prediction timing, output scale or extent and climate variability both in isolation and in combination affected the model's predictive ability. RESULTS AND CONCLUSIONS: The literature search produced 11, 908 results which was reduced to 118 papers after applying the review criteria (peer reviewed papers focussed on models predicting yield at greater than plot scale across extensive areas using accessible data). China produced almost one third of all yield prediction models over the study period and 87% of models were used to predict wheat yield. Statistical models were the most common algorithm in most regions and in total. However, there was a surge in machine learning models after 2018. They were the most common model from 2019 to 2021, with one third developed in China. The review concluded that only the choice of modelling technique and the input data had a significant effect on model performance with the machine learning techniques Random Forest, Boosting algorithms and Deep Learning models as well as process-based Light Use Efficiency models that used a combination of remotely sensed and agrometeorological data performing best. SIGNIFICANCE: The review showed that matching the model to the available data could improve the ability to predict wheat, barley or canola yield. The use of quantitative statistical techniques in this review, should give modellers trying to predict wheat, barley or canola yield more confidence in matching their approach to the available data than previous reviews that relied on visual interpretation of data. © 2023 The Authors
Modelling and analyses of rock bridge fracture and step-path failure in open-pit mine rock slope
- Al Mandalawi, Maged, You, Greg, Dahlhaus, Peter, Dowling, Kim, Sabry, Mays
- Authors: Al Mandalawi, Maged , You, Greg , Dahlhaus, Peter , Dowling, Kim , Sabry, Mays
- Date: 2019
- Type: Text , Conference paper
- Relation: 2nd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2018 - The official international congress of the Soil-Structure Interaction Group in Egypt, SSIGE 2018, 24-28 November 2018 p. 198-226
- Full Text: false
- Reviewed:
- Description: Rock Bridge fracturing and coalescence with pre-existing discontinuities in rock mass due to the initiation, propagation and interaction of these fractures refers to instability mode of step-path failure. Step-path failure is a typical type of instable mode of man-made and natural rock slopes. The continuum finite element method was applied to work on deeper insight into the propagation of tensile cracks which developing in the intact rock bridges that can finally coalesce to form step-path failure. In this paper, based on the intact rock fracturing hypothesis, two selected slope simulations from the Handlebar Hill open - pit mine near Mt. Isa in Queensland, Australia, modeled the process of fracturing and step-path failure through different pre-existing discontinuities. The empirical models of Bobet and Einstein (1998) and the progressively cracks development are observed within crack initiation, propagation and coalescence in the intact rock bridges. Proposed slope models of the mine included four joint-net distributions through the rock masses considering the geometry of structures (dip angles, spacing, lengths and orientation) illustrated the extension cracks from the flaw tips and propagated to the slope surface. Modes of intact rock bridges fracturing (shear, tensile and a combination of shear and tensile) have been observed. Tensile fracture is usually generated when the rock bridge angle is sub-vertical. Shear fracture can be initiated in less steep rock bridge angles. A combination of shear and tensile failure is normally generated in slopes with. Slope with explicit large-scale structures of steeper dip angles increased the yielding. Larger structures show much higher potential for yielding as the tensile stresses increasing. Major joint plane spacing resulted in less potential for relative deformations between neighboring structures and consequently reduced slope instability. The changes of length and spacing have more influence on slope stability than a change in the dip angle of the structures. © 2019, Springer Nature Switzerland AG.
- Milne, Robert, Thompson, Helen, Dahlhaus, Peter, MacLeod, Andrew, Freely, Paul, Nicholson, Cam, Norton, Rob
- Authors: Milne, Robert , Thompson, Helen , Dahlhaus, Peter , MacLeod, Andrew , Freely, Paul , Nicholson, Cam , Norton, Rob
- Type: Text , Dataset
- Full Text: false
- Description: Online Farm Trials is part of an interoperable web-GIS maintained by Federation University Australia. The Online Farm Trials (OFT) project is funded and supported by the Grains Research and Development Corporation (GRDC), and was initiated in 2013 with the aim of using the latest technology to improve access to, and adoption of, grains industry research data and information. Federation University Australia's Centre for eResearch and Digital Innovation is leading the project to develop and deliver the OFT Trial Explorer, Report Library and other trial research resources. The project has a strong collaborative approach, working with a range of crop research groups, industry experts and grain industry organisations to ensure the outcomes are highly relevant, practical and beneficial. The Federation University Australia Spatial Online Farm Trials database includes: An accessible online digital library of national farm trial research reports and documents. Direct online access to trial research data in digital form with download capacity. Online analytical/decision tools for growers, agronomists and researchers. Linking of other sources of relevant data and information with trial research through interoperable systems. Increased networking and collaboration on cropping issues and farm trial research. The principle objective of the project is to help growers improve productivity and sustainability of their farm enterprise through improved access to trial research knowledge.