Rapid assessment of earthquake-induced landslides

Tanyaş, Hakan

doi:10.3990/1.9789036547055

Cited by 1 publication

(1 citation statement)

References 167 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In any region, landslide mapping is the fundamental task that must be completed for landslide susceptibility and hazard analyses. However, as landslide mapping requires time and effort, forward modelling and spatial analysis tools (e.g., see [33,34] for the Newmark mapping approach) have been developed to 'predict' landslide susceptibility more rapidly and without prior information on previous slope failures (as would be needed for regions hit by a severe storm or earthquake, for which a new or updated landslide susceptibility map should be rapidly created; see applications presented by [35,36]). Nonetheless, for a reliable and general (not event-based) landslide susceptibility assessment, landslide inventories provide a necessary control on such predicted susceptibility maps, as spatial analysis or forward modelling approaches cannot account for all region-specific information.…”

Section: Discussionmentioning

confidence: 99%

A New Landslide Inventory for the Armenian Lesser Caucasus: Slope Failure Morphologies and Seismotectonic Influences on Large Landslides

et al. 2020

View full text Add to dashboard Cite

Landslide hazard analyses in Armenia require consideration of the seismotectonic context of the Lesser Caucasus. As it is located near the center of the Arab-Eurasian collision, the Lesser Caucasus is characterized by its complex geology, dense fault network and mountainous relief; it is marked by recent volcanic and seismic activity largely influencing slope stability at different scales. We therefore sought to identify all major landslides in the Armenian Lesser Caucasus and to understand the environmental factors contributing to regional landslide susceptibility. We performed spatial and size-frequency analyses using two landslide catalogues as inputs: “Georisk”, provided by the Georisk Scientific Research Company, and “Matossian”, herein. Our spatial analyses show that landslide susceptibility depends on many factors according to the area considered: near faults, a tectonic influence on slope stability is clearly observable, whereas high concentrations of landslides in northern mountain regions, marked by a wetter climate and far from known active faults, show that climatic factors also strongly contribute to slope-failure potential. The influence of volcanoes and volcanic deposits on the development of mass movements is unclear and requires further analysis. The aforementioned inventories do not include any records of volcanic flank collapses, although we expect at least one case in the eastern Lesser Caucasus.

show abstract