- Title
- The impact of landslides and erosion in the Corangamite region, Victoria, Australia
- Creator
- Dahlhaus, Peter; Miner, Anthony; Feltham, W.; Clarkson, Troy
- Date
- 2006
- Type
- Text; Conference paper
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/46012
- Identifier
- vital:1328
- Abstract
- 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.; E1
- Publisher
- Nottingham, United Kingdom : Geological Society Publishing House
- Relation
- Paper presented at the Geological Society of London 2006, Nottingham, United Kingdom : 6th September, 2006
- Rights
- Copyright Unknown
- Rights
- This metadata is freely available under a CCO license
- Subject
- Landslides; Erosion; Soil erosion; Geological hazards; Regional planning
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