Landslide Inventory of the 2010 Maule Earthquake, Central Chile

Abstract eng:
Landslides are a major source of fatalities and damage during strong earthquakes in mountain areas. Detailed, comprehensive inventories of landslides triggered by earthquakes are essential parts of seismic landslide hazard analyses. Chile being such a seismic country, there are not complete landslide inventories induced by subduction earthquake in Chile. An exceptional case study from which is possible to make a thorough study of the occurrence of landslides generated by earthquakes in a subduction margin, is the 27/02/2010, Mw 8.8 earthquake in central- southern Chile. From the analysis of satellite images and bibliographic information, a preliminary inventory of landslides generated by the earthquake was conducted by Escobar (2013) and Moya (2015), between the regions of Valparaiso and the Araucanía, focused on the Coastal Cordillera and coastal plains. This paper is aimed at complete the inventory adding earthquakeinduced landslides in the Main Cordillera between 32.8 ° and 38.5 ° S. The new mapped landslides (>30 m2 surface area) were identified by interpretation of satellite images. The full inventory shows over 1160 events in total, including rock falls, rock and soil slides, flows and lateral spreads among others. The maximum distance to the epicenter is 487 km. Most of the landslides (over 800) are located in Principal Cordillera. The review of the data shows that the events are not evenly distributed in the study area, with the presence of several clusters of landslides, the most important of those located in the Arauco Peninsula, Bio Bio

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket