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Published November 2015 | Published
Journal Article Open

Geotechnical Effects of the 2015 Magnitude 7.8 Gorkha, Nepal, Earthquake and Aftershocks


This article summarizes the geotechnical effects of the 25 April 2015 M 7.8 Gorkha, Nepal, earthquake and aftershocks, as documented by a reconnaissance team that undertook a broad engineering and scientific assessment of the damage and collected perishable data for future analysis. Brief descriptions are provided of ground shaking, surface fault rupture, landsliding, soil failure, and infrastructure performance. The goal of this reconnaissance effort, led by Geotechnical Extreme Events Reconnaissance, is to learn from earthquakes and mitigate hazards in future earthquakes.

Additional Information

© 2015 Seismological Society of America. The following people and organizations contributed to this reconnaissance effort: National Science Foundation (NSF); U.S. Geological Survey (USGS); United States Agency for International Development; National Society for Earthquake Technology-Nepal; Kadoorie Agriculture Aid Association; University of Illinois at Urbana-Champaign CEE Rapid Response Grant; Mueser Rutledge Consulting Engineers; Lettis Consultants International, Inc.; Pacific Gas and Electric Company; Oregon State University; California State University (Fullerton and California Polytechnic at San Louis Obispo), Tribhuvan University (Institute of Engineering); Nepal Geotechnical Engineering Society; Kathmandu University; Department of Electricity Development, Nepal; Department of Roads, Nepal; Ministry of Physical Infrastructure and Roads; Nepal Electricity Authority; Jon Bray; Maja Bitenc; Mirjam Ziselsberger; Sanjib Basnet; Surendra Awasthi; Vijay Mahato; and Monica Maharjan. Jiaxin Xu collated the data on damage to structures in the Kathmandu Valley. Alexander Remar helped prepare Figure 6. Reviews by Robert Kayen, Kate Allstadt, Susan Hough, and an anonymous reviewer have substantially improved this article.

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August 20, 2023
August 20, 2023