CERU

HIGHLIGHTS

IT HAPPENED

PROJECTS

ACTIVITIES

GALLERY

2016-2017

EUROPEAN LANDSLIDES

European Landslide Hazard Maps: Fostering European Harmonization of Slope Movement Hazard Assessment at various spatial scales )

(Leader: CERG; Partners: GHHD, CERU, AFEM)

The global objective for 2016-2017: Reliable estimates of expected location, timing and intensity of slope movements (slide, fall, flow, collapse, subsidence) are required for the design of risk reduction measures (hazard/risk mapping, emergency planning, defence works and insurance premiums). Further, the relevance of slope movement zoning for environmental policy is set forth in the EU Thematic Strategy for Soil Protection. In practice, this information is obtained through the evaluation of slope movement occurrences based on the analysis of conditioning factors of observed events (inventories) to infer a probabilistic behaviour, which is then extrapolated at the scale of a territory. The challenge for slope hazard assessments (in various environments, e.g. mountain and coastal areas) is that, unlike other geohazards, these phenomena are rather localised and often not observed directly. Despite their distinct locations, they might occur widespread in a given region.

OBJECTIVES

TASKS

Calculation of statistical landslide triggering thresholds (e.g. rainfall amounts, rainfall intensity, other parameters) for selected European regions in France, Georgia, Portugal, Turkey (CERG, GHHD, CERU, AFEM).

Development of a methodology to integrate triggering thresholds in the global scale landslide hazard assessments (e.g. for scale > 1.100.000), and test in selected European regions (sub-regions in France, Georgia, Portugal, Turkey) (CERG, GHHD, CERU, AFEM).

Development of a methodology to integrate seismic triggering thresholds in the global scale landslide hazard assessment, and test in several European regions (sub-regions in Portugal, France, Georgia) (CERG, GHHD, CERU).

Presentation of the results at the Intensive Post-graduate trainaing school sponsored by EGU and CoE "Landslides and Other Geological Hazards in Active Volcanic Environments" organized in July 2016 in Ponta-Delgada / Azores (CERG, CERU) - CoE is co-organizing the event.

Production of the landslide national hazard maps for France and Georgia (CERG, GHHD).

Production of the landslide national susceptibility maps for Portugal, Turkey,(whatever the method according to the landslide dataset available) (AFEM, CERU).

Workshop (among the partners) to discuss the methodology and the proposed hazard maps, and prepare the publication of a scientific paper.

2016

WP 1		Compilation of existing information on earthquake triggered landslides in Portugal

WP 2		Compilation and preliminary analysis of available data on: rainfall triggered landslides inventories; geotechnical data on different geological formations; existing geological mapping covering the who

2017

WP 1		Preliminary analysis of existing methods for seismic landslide susceptibility assessment.

Expected results

Landslide susceptibility maps (first order evaluation of the hazard) for Portugal

A prototype method for coupling seismic activity parameters to landslide susceptibility maps at urban scale

Preliminary map of earthquake triggered landslides

Methods for earthquake triggered landslides

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