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|Title:||Validation of Landslide Inventory, Susceptibility and Hazard Maps|
|Authors:||VAN DEN EECKHAUT MIET; HERVAS DE DIEGO Francisco; MONTANARELLA Luca|
|Citation:||Conference Proceedings: VALgEO 2010 - 2nd International workshop on Validation of geo-information products for crisis management p. 41-49|
|Publisher:||Publications Office of the European Union|
|Type:||Articles in periodicals and books|
|Abstract:||In landslide risk management it is generally preferred to follow the strategy of prevention and risk reduction. This contribution therefore focuses on landslide damage prevention or reduction through production of landslide susceptibility and hazard maps and inventorying and monitoring of hazardous landslides. Though the number of landslide risk studies is still rather low, the amount of regional to national-scale landslide inventory, susceptibility and hazard maps produced has strongly increased in the last two decades aided by the development of GIS and statistical software and the availability of open source thematic data and high-resolution remotely sensed satellite data. Many researchers and institutions have developed their own techniques and models to identify and map landslides and to assess landslide susceptibility or hazard. For Europe, a landslide susceptibility map is not available yet, but the JRC landslide expert group is currently producing one following a Tier-based approach. Although a crucial step in landslide modelling, validation is often not given the necessary attention. Therefore, several procedures for validation of susceptibility and hazard models are presented, so that the obtained results can be interpreted meaningfully with respect to future landslide occurrence and the significance of the predictions can be communicated to decision makers allowing them to perform sound land use planning and landslide crisis management. In the case of landslide inventory mapping not only accuracy assessment and validation, but also the updating of the landslide inventory is important. Interim outcomes of a survey carried out in the framework of the EU-FP7 SafeLand project show that 21 European countries out of 37 contacted report to have a national landslide database and ca. 85% of these national landslide databases are regularly updated. However, only one country uses optical spaceborne remote sensing. More common methods for landslide inventory mapping are field surveys, analysis of newspaper articles and technical reports or aerial photograph interpretation. In order to suggest alternative landslide mapping techniques, several procedures for remotely sensed landslide mapping are being tested within the SafeLand project. In this paper we specifically focus on objective landslide identification and mapping using LiDAR data in an object oriented analysis.|
|JRC Institute:||Institute for Environment and Sustainability|
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