U33A:
The 25 April 2015 M7.8 Gorkha, Nepal, Earthquake Sequence: Lessons Learned

Note: Abstract submissions to Union sessions are by invitation only.


Session ID#: 9686

Session Description:
The 2015 Mw7.8 Nepal earthquake is the largest event to strike the mountainous country in over 80 years.   The mainshock and large aftershocks taken a heavy toll on lives and property in cities and villages throughout the country.  Geodetic, remote sensing, seismic, and other data will provide unprecedented illumination of this event, and the ground motions it generated within and beyond the Kathmandu Valley.  Although the earthquake was in many ways expected, preliminary data and analyses raise questions of critical importance for both earthquake science and seismic hazard.  Forensic engineering investigations will also be critical to understand the performance of traditional versus more modern structures.  We invite a broad range of contributions focusing on scientific, engineering, and social lessons of this important earthquake, as well as contributions focusing on implications for future hazard in the Himalayan region.
Primary Convener:  Ramesh P Singh, Chapman University, School of Earth and Environmental Sciences, Orange, CA, United States
Convener:  Susan Elizabeth Hough, USGS Pasadena Field Office, Pasadena, CA, United States
Chairs:  Susan Elizabeth Hough, USGS Pasadena Field Office, Pasadena, CA, United States and Ramesh P Singh, Chapman University, School of Earth and Environmental Sciences, Orange, CA, United States
OSPA Liaison:  Susan Elizabeth Hough, U.S. Geological Survey, Earthquake Science Center, Pasadena, United States
Index Terms:

0468 Natural hazards [BIOGEOSCIENCES]
7212 Earthquake ground motions and engineering seismology [SEISMOLOGY]
7215 Earthquake source observations [SEISMOLOGY]
8108 Continental tectonics: compressional [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Incomplete décollement rupture in the 25 April 2015 Gurkha earthquake; Implications for past and future Himalayan earthquakes (Invited) (76038)
Rebecca O Bendick, University of Montana, Geosciences, Missoula, MT, United States, David Mencin, EarthScope Consortium, Boulder, United States, Ellen Knappe, University of Montana, Missoula, MT, United States, Bishal Nath Upreti, Tribhuvan University, Kathmandu, Nepal, Abdelkrim Aoudia, The Abdus Salam International Center for Theoretical Physics (ICTP), Earth System Physics, Trieste, Italy, John Galetzka, UNAVCO, Inc. Boulder, Boulder, CO, United States and Roger Bilham, University of Colorado, CIRES, Boulder, CO, United States
April 25, 2015, Gorkha Earthquake, Nepal and Sequence of Aftershocks: Key Lessons (Invited) (58693)
Amod Mani Dixit, Surya Narayan Shrestha and Ramesh Guragain, National Society for Earthquake Technology - Nepal (NSET), Kathmandu, Nepal
The Advanced Rapid Imaging and Analysis (ARIA) Project’s Response to the April 25, 2015 M7.8 Nepal Earthquake: Rapid Measurements and Models for Science and Situational Awareness  (Invited) (58312)
Susan E Owen1, Eric Jameson Fielding1, Sang-Ho Yun1, Han Yue2, Jascha Polet3, Bryan V Riel4, Cunren Liang2, Mong-Han Huang1, Frank Webb1, Mark Simons5, Angelyn W Moore6, Piyush S Agram7, William D Barnhart8, Hook Hua6, Zhen Liu1, Pietro Milillo9, Gian Franco Sacco6, Paul Alan Rosen6 and Gerald Manipon1, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)California State Polytechnic University Pomona, Pomona, CA, United States, (4)Massachusetts Institute of Technology, School of Earth Sciences, Hangzhou, China, (5)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (6)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (7)Jet Propulsion Lab Caltech, Pasadena, CA, United States, (8)University of Iowa, Iowa City, IA, United States, (9)University of Houston, Department of Civil and Environmental Engineering, Houston, United States
Salient Features of the 2015 Gorkha, Nepal Earthquake in Relation to Earthquake Cycle and Dynamic Rupture Models (Invited) (58331)
Jean Paul Ampuero, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, Lingsen Meng, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, Susan Elizabeth Hough, USGS Pasadena Field Office, Pasadena, CA, United States, Stacey Servito Martin, Earth Observatory of Singapore, Singapore, Singapore and Domniki Asimaki, California Institute of Technology, Pasadena, United States
Performance of Built Environment in the 2015 Gorkha Earthquake and its Implications on Seismic Risk Mitigation Strategies (Invited) (58353)
Durgesh C Rai, Indian Institute of Technology Kanpur, Kanpur, India
Macroseismic Intensities from the 2015 Gorkha, Nepal, Earthquake (Invited) (58240)
Stacey Servito Martin, Earth Observatory of Singapore, Singapore, Singapore; Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, Susan Elizabeth Hough, USGS Pasadena Field Office, Pasadena, CA, United States, Vineet Kumar Gahalaut, National Centre for Seismology, Ministry of Earth Sciences (MoES), Delhi, India and Charleen Hung, Unaffiliated, Kleinmachnow, Germany
Landslide distribution resulting from the 2015 Gorkha, Nepal earthquake sequence (Invited) (58341)
Brian D Collins, USGS Landslide Hazards Program, Moffett Field, United States and Randall Jibson, U.S. Geological Survey, Golden, CO, United States
Earthquake Forecasts for Gorkha Immediately Following the 25th April, M=7.8 Mainshock (Invited) (58604)
Tom Parsons, USGS, Moffett Field, United States and Margarita Segou, British Geological Survey, Edinburgh, United Kingdom

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