Landslide Hazards

Coseismic Landslides

When a large earthquake shakes mountainous areas, hundreds or even thousands of destructive landslides can result.  Landslides may be scattered across a broad area extending tens or more of kilometers from the earthquake epicenter causing widespread impacts over and above the damage caused by strong ground shaking of the earthquake itself.  USGS scientists conduct mapping and field studies, numerical modeling, and other analyses following large earthquakes to improve understanding of how and where earthquakes induce landslides.  This information, combined with information about earthquake shaking can help in planning for and emergency management of coseismic landslides.  In addition, the USGS is currently developing models to predict in near real-time what areas are may be affected by landslides generated by large earthquakes to assist post-earthquake response efforts.

Filter Total Items: 2
Date published: July 29, 2020
Status: Active

Landslides Triggered by the 2020 Puerto Rico Earthquake Sequence

A magnitude 6.4 earthquake occurred near Barrio Indios, Guayanilla, Puerto Rico on January 7, 2020. A study of the triggered landslides is ongoing.

Date published: September 25, 2019
Status: Active

Global Earthquake-Triggered Ground Failure Inventory Database

Earthquake-triggered ground-failure, such as landsliding and liquefaction, can contribute significantly to losses, but our current ability to accurately include them in earthquake hazard analyses is limited.