T54C:
Himalayan Earthquakes: Observations, Processes, and Tectonics

Submit an Abstract to this Session



Session ID#: 31627

Session Description:
The Himalayan region is a tectonically active continental collision zone adjacent to numerous densely populated urban areas. Understanding the processes and tectonics of large Himalayan earthquakes is extremely important for estimating seismic hazards and organizing risk mitigation efforts. Earthquake rupture modeling, fault geometries and dynamics, lithospheric structure and rheologies, and the evolving state of regional stress all contribute to our understanding of the tectonic setting. We seek contributions from scientists who work on myriad aspects of Himalayan tectonics from the perspective of different disciplines including seismology, geodesy, geophysics, paleoseismology, structural geology, and geodynamics. We especially encourage submissions related to the recent 2015 large earthquakes in Nepal, the April 25, 2015 Gorkha magnitude 7.8 and the May 12, 2015 magnitude 7.3 earthquakes, the largest earthquakes to occur in the central segment of the Himalaya in 80 years.
Primary Convener:  Marianne S Karplus, University of Texas at El Paso, Department of Geological Sciences, El Paso, TX, United States
Conveners:  John Nabelek, Oregon State University, CEOAS, Corvallis, OR, United States, Jean-Philippe Avouac, California Institute of Technology, Seismological Laboratory, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Aaron A Velasco, University of Texas at El Paso, El Paso, TX, United States
Chairs:  Jean-Philippe Avouac, California Institute of Technology, Seismological Laboratory, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Marianne S Karplus, University of Texas at El Paso, Geological Sciences, El Paso, TX, United States
OSPA Liaison:  Marianne S Karplus, University of Texas at El Paso, Geological Sciences, El Paso, TX, United States

Cross-Listed:
  • G - Geodesy
  • S - Seismology
Index Terms:

7209 Earthquake dynamics [SEISMOLOGY]
7230 Seismicity and tectonics [SEISMOLOGY]
8108 Continental tectonics: compressional [TECTONOPHYSICS]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Earthquake activity along the Himalayan orogenic belt (269734)
Ling Bai, ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China and James J Mori, Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan
The 2015 Gorkha Earthquake and the Structure of a Himalayan Intracontinental Subduction Channel From Geodesy, Seismicity, and Seismic Imaging (255976)
Vera Schulte-Pelkum, University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, United States, William D Barnhart, US Geological Survey, Earthquake Hazard program, Golden, United States, Daniel E McNamara, USGS Geologic Hazards Science Center, Golden, CO, United States, Marianne S Karplus, University of Texas at El Paso, Geological Sciences, El Paso, TX, United States and Gaspar Monsalve, Universidad Nacional de Colombia, Facultad de Minas, Medellín, Colombia
Seismicity Pattern and Fault Structure in the Central Himalaya Seismic Gap Using Precise Earthquake Hypocenters and their Source Parameters (288583)
Manuel Mendoza, University of California, Riverside, Department of Earth and Planetary Sciences, Riverside, United States, Abhijit Ghosh, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States and Shyam Sundar Rai, IISER Pune, Earth & Climate Science, Pune, India
Building a viable decollement geometry for the Central Nepal Himalaya through integrating surface geology, thermochronology and data from the 2015 Gorkha Earthquake (264815)
Suryodoy Ghoshal1, Nadine McQuarrie2, Delores M Robinson3, Elizabeth Olree4, Cole Valentino5 and Joshua Olsen2, (1)University of Pittsburgh, Pittsburgh, United States, (2)University of Pittsburgh, Pittsburgh, PA, United States, (3)University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States, (4)University of Alabama, Tuscaloosa, AL, United States, (5)Occidental College, Geology, Los Angeles, CA, United States
A Comparative Analysis of Postseismic Deformation due to Three Major Thrust Earthquakes at the Margins of the Tibetan Plateau (265285)
Yuri A Fialko, University of California San Diego, La Jolla, CA, United States and Kang Wang, IGPP, La Jolla, United States
Postseismic deformation following the 2015 Mw 7.8 Gorkha earthquake and the distribution of brittle and ductile crustal processes beneath Nepal (247093)
James Daniel Paul Moore1, Sylvain Barbot2, Dongju Peng3, Hang Yu4, Qiang Qiu5, Teng Wang6, Sagar Masuti7, Justin Dauwels4, Eric Ostrom Lindsey6, Chi-Hsien Tang8, Lujia Feng1, Shengji Wei1, Ya-Ju Hsu9, Priyamvada Nanjundiah1, Valere Lambert10 and Solène L Antoine11, (1)Earth Observatory of Singapore, Singapore, Singapore, (2)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (3)Asian School of Environment, Nanyang Technological University, Singapore, Singapore, (4)Nanyang Technological University, School of Electrical & Electronic Engineering, Singapore, Singapore, (5)University of Leeds, Leeds, United Kingdom, (6)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (7)Nanyang Technological University, Singapore, Singapore, (8)National Taiwan University, Department of Geosciences, Taipei, Taiwan, (9)Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, (10)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (11)Ecole Normale Supérieure de Paris, Paris, France
Pulse-Like Partial Ruptures and High-Frequency Radiation at Creeping-Locked Transition during Megathrust Earthquakes (263744)
Sylvain Gaetan, Robert, Marcel Michel, University of Cambridge, Department of Earth Sciences, Cambridge, UNITED KINGDOM, Jean-Philippe Avouac, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, Nadia Lapusta, Division of Geological and Planetary Sciences and Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, United States and Junle Jiang, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
What controls the bimodal seismicity of large Himalayan earthquakes? (238355)
Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, Luca Dal Zilio, ETH Zürich, Institute of Geophysics, Department of Earth Sciences, Switzerland, Zurich, Switzerland, Ylona van Dinther, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands and Jean-Philippe Avouac, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States

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