Implementing the AGS landslide risk management guidelines in a municipal planning scheme : A case study in the Colac Otway Shire, Victoria
- 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
Geological hazards: Hidden dangers for construction
- 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
Coastal rock fall hazard identification, Barwon Heads, Victoria
- Authors: Dahlhaus, Peter , Muller, B. , Miner, Anthony
- Date: 2006
- Type: Text , Journal article
- Relation: Australian Geomechanics Journal Vol. 41, no. 3 (2006), p. 85-91
- Full Text:
- Description: C1
- Description: 2003002060
FedUni Spatial landslide database
- Authors: Dahlhaus, Peter , Miner, Anthony
- Date: 2006 -
- Type: Text , Dataset
- Full Text: false
- Reviewed:
- Description: The UB Spatial landslide database is part of an interoperable web-GIS maintained by the University of Ballarat. It records data on the spatial distribution of landslide points, lines and polygons that have been mapped for landslide research projects undertaken by the University. The UB Spatial website was initially developed with funding support from the Corangamite Catchment Management Authority and contained four environmental datasets: groundwater bores, salinity, erosion and landslides, covering the Corangamite region. Subsequent funding was received from the Australian Government National Disaster Mitigation Program sourced through the Colac Otway Shire to enhance the data. The UB Spatial landslide database contains information on the spatial locations, landslide extents, landslide types, data sources, data capture methods and assessment date, landscape parameters and dates and styles of movements in south west Victoria. A.S. Miner Geotechnical (Geelong-based consulting geotechnical engineers) has significantly contributed to the data coverage. The University of Wollongong and Mineral Resources Tasmania both contributed to the database schema. The UB spatial landslide database is updated as landslide research projects are completed. Much of this work has been documented for the Corangamite Soil Health Strategy and background reports relating to the research can be accessed at the Corangamite Soil Health Strategy website. https://soilhealth.ccmaknowledgebase.vic.gov.au/soils_map.php
- Description: The UB Spatial landslide database is part of an interoperable web-GIS maintained by the University of Ballarat. It records data on the spatial distribution of landslide points, lines and polygons that have been mapped for landslide research projects undertaken by the University. The UB Spatial website was initially developed with funding support from the Corangamite Catchment Management Authority and contained four environmental datasets: groundwater bores, salinity, erosion and landslides, covering the Corangamite region. Subsequent funding was received from the Australian Government National Disaster Mitigation Program sourced through the Colac Otway Shire to enhance the data. The UB Spatial landslide database contains information on the spatial locations, landslide extents, landslide types, data sources, data capture methods and assessment date, landscape parameters and dates and styles of movements in south west Victoria. A.S. Miner Geotechnical (Geelong-based consulting geotechnical engineers) has significantly contributed to the data coverage. The University of Wollongong and Mineral Resources Tasmania both contributed to the database schema. The UB spatial landslide database is updated as landslide research projects are completed. Much of this work has been documented for the Corangamite Soil Health Strategy and background reports relating to the research can be accessed at the Corangamite Soil Health Strategy website. http://www.ccma.vic.gov.au/soilhealth/reports.htm
Geohazard risk management for municipal planning in the Corangamite region, Victoria, Australia
- Authors: Dahlhaus, Peter , Miner, Anthony
- Date: 2006
- Type: Text , Conference paper
- Relation: Paper presented at The 10th international congress of the IAEG, Nottingham, UK : 6th September, 2006
- Full Text: false
- Reviewed:
- Description: The Corangamite region covers an area of approximately 13,340 km2 and is located in south western Victoria, Australia. The population of approximately 400,000 persons is growing at 5.2% per year, and is served by nine municipalities within the region. The region's diverse range of landscapes and climatic conditions, result in a variety of geological hazards including landslides, soil erosion of all forms, coastal erosion, dryland salinity, potential acid sulphate soils, reactive soils and ground subsidence. These geohazards are increasingly recognised as a constraint on future urban development and a threat to the economic, social and environmental health of the region. Evaluation of the impacts of geological hazards by State government authorities, research institutions and consultants has been inconsistent, both in hazard identification and risk assessment methods. As a result, municipal planning authorities have lacked a consistent framework with which to assess the potential impacts from these hazards and those associated with new developments which may interact with the hazards. The use of risk assessment techniques for the management of landslides in Australia advanced significantly after the publication of the Australian Geomechanics Society's landslide risk management concepts and guidelines in 2000. These guidelines in turn were based on the Australian/New Zealand Standard on Risk Management. Similar risk management techniques have now been developed by the authors for the assessment of soil erosion and salinity for particular use by municipalities within the Corangamite region. A brief review of the nature and extent of landslides, salinity and erosion in the Corangamite region is detailed. The adopted methods of the risk management for each geohazard are described including a comparison of their applicability and an assessment of limitations with each method.
- Description: E1
- Description: 2003002055
The impact of landslides and erosion in the Corangamite region, Victoria, Australia
- Authors: Dahlhaus, Peter , Miner, Anthony , Feltham, W. , Clarkson, Troy
- Date: 2006
- Type: Text , Conference paper
- Relation: Paper presented at the Geological Society of London 2006, Nottingham, United Kingdom : 6th September, 2006
- Full Text: false
- Reviewed:
- Description: The Corangamite region in southwest Victoria, Australia is subject to a variety of geohazards, among which landslides and erosion have the most significant impact. Over the past fifty years, landslides have resulted in loss of life and many millions of dollars damage to municipal infrastructure and development. Soil erosion by water and wind has also impacted on the region's waterways and environment, threatening a diverse range of assets from urban water quality to Ramsar-listed wetlands. More assets are placed at risk each year, as the increasing regional population results in an acceleration of anthropogenic modifications to landscapes. A comprehensive GIS database was initiated by assembling all publicly available previous databases and reports documenting landslides and erosion in the 1,340 km2 region. New data were added by mapping occurrences which were visible on high-resolution ortho-corrected aerial photographs. The field-checking of the occurrences was assisted by the participation of the local community, municipal officers and catchment management coordinators. At present 2163 landslides and 2380 erosion sites have been identified, mapped and referenced in the database. It is believed that thousands more instances exist, but these cannot be identified at the aerial photo scale, or are obscured by dense vegetation. A spatial analysis has been undertaken to identify landscape parameters which correlate with the occurrences. Historical aerial photography was used in selected locations to identify the rates of erosion and landslide events. The inventory has been used to estimate the economic, social and environmental costs of landslides and soil erosion within the region, using documented instances of damage and the costs of remediation. Combined with the value of the assets and elements at risk, the potential likelihood of occurrence and associated consequences, these estimates are used to develop a strategy for the investment of public funds in remediation.
- Description: E1
- Description: 2003002058
Some geomorphological techniques used in constraining the likelihood of landsliding - Selected Australian examples
- Authors: Miner, Anthony , Flentje, Phil , Mazengrab, Colin , Selkirk-Bell, Jennifer , Dahlhaus, Peter
- Date: 2008
- Type: Text , Conference paper
- Relation: 10th International Symposium on Landslides and Engineered Slopes
- Full Text: false
- Reviewed:
- Description: Techniques for landslide risk management in Australia have evolved considerably since the publication of the first formal process in 1985. The Australian Geomechanics Society recently published the next generation of updated landslide risk documents in 2007. The estimation of landslide likelihood is fundamental to the outcome of the landslide risk management process. However, experienced practitioners still regard this component as one of the most difficult and challenging aspects of the assessment as it requires information about the age of landslides, an understanding of landscape processes and the rate of slope evolution. Such information is difficult to obtain and is often not a core competency among practitioners undertaking landslide risk assessment. In order to provide insight into the methods of estimating and constraining landslide likelihood, a number of different geomorphological approaches are herewith reviewed through a series of selected Australian cases studies. Whilst the case studies highlight inherent limitations and uncertainties they also demonstrate how geomorphological studies can provide validation and constraints to a quantification of likelihood and ultimately risk.
Rockfalls : Predicting high-risk behaviour from beliefs
- Authors: Aucote, Helen , Miner, Anthony , Dahlhaus, Peter
- Date: 2010
- Type: Journal article
- Relation: Disaster Prevention and Management Vol. 19, no. 1 (2010), p. 20-31
- Full Text:
- Reviewed:
- Description: Purpose – The purpose of this paper is to gain an understanding of the public's beliefs, attitudes and knowledge regarding rockfalls, and to see whether these variables could predict whether a person is likely to enter high-risk rockfall areas. Design/methodology/approach – A questionnaire was developed to measure beliefs (informed by the health belief model), knowledge, and previous behaviour in relation to rockfalls. Questions were also included to measure attitudes regarding rockfall caution signs. In total, 138 members of the general public completed the questionnaire. Findings – High-risk behaviour was more likely if the person was male and if the person had the belief that sign-posted high-risk areas were not dangerous. Further, believing that the sign-posted areas were not dangerous was more likely among people who held negative attitudes towards cautionary signs; specifically, these participants were more likely to doubt the validity of the warning signs. Research limitations/implications – The research was exploratory in nature. Further research should be conducted with a larger sample size and a more random selection of the general population. Ways of improving measurement of the variables are discussed. Practical implications – Efforts should be made to increase the public's perception of the validity of rockfall cautionary signs. Doing so may decrease injury and death as a result of rockfalls. Suggestions on ways to increase the validity of signage are made. Originality/value – It is presumed that this study is the first to attempt to gain an understanding of the beliefs and attitudes that may lead a person into engaging in high-risk behaviour in relation to rockfalls.
The implementation of the AGS guidelines in the Colac Otway Shire – history and challenges
- Authors: Marsden, P , Miner, Anthony , Dahlhaus, Peter
- Date: 2011
- Type: Text , Journal article
- Relation: Australian geomechanics Vol. 46, no. 2 (June 2011), p. 211-218
- Full Text: false
- Reviewed:
- Description: The Australian Geomechanics Society's (AGS) guidelines on Landslide Risk Management emphasise landslide zonation as a key requirement for regulators dealing with landslide risk (AGS 2007a). The basis for zonation is a landslide inventory which reflects the nature and spatial distribution of landslide types in a particular locale, such as a local government area. This paper describes the design and implementation of a web-based landslide database for south west Victoria aimed at disseminating landslide inventory information to regulators, consultants and the general public. Although the 4,581 mapped landslides represent the most complete and extensive data set for the region, the current data quality and resolution does not meet the AGS guideline for landslide zonation at the municipal planning scale. However, with an essential need for landslide planning controls in this region, the data is the best available for the construction of zonation maps, resulting in conservative boundaries at the required map scale. The paper highlights the ongoing need to improve the spatial extent and quality of the landslide database if the statutory planning zonation maps are ultimately to comply with the AGS guidelines.
A web-GIS and landslide database for South West Victoria and its application to landslide zonation
- Authors: Dahlhaus, Peter , Miner, Anthony , MacLeod, Andrew , Thompson, Helen
- Date: 2012
- Type: Text , Journal article
- Relation: Australian geomechanics Vol. 46, no. 2 (2012), p. 203-209
- Full Text: false
- Reviewed:
- Description: The Australian Geomechanics Society's (AGS) guidelines on Landslide Risk Management emphasise landslide zonation as a key requirement for regulators dealing with landslide risk (AGS 2007a). The basis for zonation is a landslide inventory which reflects the nature and spatial distribution of landslide types in a particular locale, such as a local government area. This paper describes the design and implementation of a web-based landslide database for south west Victoria aimed at disseminating landslide inventory information to regulators. consultants and the general public. Although the 4,581 mapped landslides represent the most complete and extensive data set for the region, the current data quality and resolution does not meet the AGS guideline for landslide zonation at the municipal planning scale. However, with an essential need for landslide planning controls in this region, the data is the best available for the construction of zonat ion maps, resulting in conservative boundaries at the required map scale. The paper highlights the ongoing need to improve the spatial extent and quality of the landslide database if the statutory planning zonation maps are ultimately to comply with the AGS guidelines.
Interpretation and misinterpretation of warning signage : Perceptions of rockfalls in a naturalistic setting
- 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.