T41H:
Shallow Subduction Zone Structure and Dynamics IV Posters


Submit an Abstract to this Session


Session ID#: 56943

Session Description:
Subduction zones play a key role in transporting and recycling earth material, as well as in initiating earthquakes and causing tsunami, and volcanic hazards. Recent investigations on the incoming plate, shallow subduction zone, and megathrust using near-field observations, core-samples, and high-resolution images have led to new insights into subduction zone dynamics. In this session we solicit contributions on all studies relevant to subduction zone dynamics from seismology, geodesy, geochemistry, numerical modeling, and seafloor sampling and drilling. Topics include but are not limited to, rupture processes and cycles of megathrust earthquakes, compositional variations of incoming plates, structure heterogeneities from the outrise to back arc, relationship between outer-rise and megathrust earthquakes, thermal and hydro-mechanical properties of the oceanic and overriding plates, and controlling factors of tectonic forces acting on the megathrust.
Primary Convener:  Hongfeng Yang, Chinese University of Hong Kong, Hong Kong, Hong Kong
Conveners:  Yan Hu, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Shuichi Kodaira, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan and Douglas Wiens, Washington University in St. Louis, Department of Earth, Environmental, and Planetary Science, St. Louis, United States
Primary Liaison:  Hongfeng Yang, Chinese University of Hong Kong, Hong Kong, Hong Kong
Chairs:  Tianhaozhe Sun, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada and Yan Hu, University of California Berkeley, Berkeley Seismological Laboratory, Berkeley, United States
OSPA Liaison:  Yan Hu, University of California Berkeley, Berkeley Seismological Laboratory, Berkeley, United States
Co-Organized with:
Tectonophysics, and Seismology

Cross-Listed:
  • G - Geodesy
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology

Proposed Co-Organized Session with:
  • G - Geodesy
  • S - Seismology
Index Terms:

1242 Seismic cycle related deformations [GEODESY AND GRAVITY]
7240 Subduction zones [SEISMOLOGY]
8123 Dynamics: seismotectonics [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Assessing the Generation of the 1964 Great Alaska Earthquake in Terms of the Dynamics of a Fore-arc Sliver System (448890)
Kirstie L. Haynie, University at Buffalo, Buffalo, NY, United States and Margarete Ann Jadamec, University at Buffalo, Department of Geology; Institute for Computational and Data Sciences, Buffalo, NY, United States
Model of Viscoelastic Relaxation of Shallow Crustal Material for Seismically Induced Tension Cracks in the Chile-Peru Forearc (360725)
Haipeng Luo1, Kelin Wang2,3 and Jiangheng He2, (1)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada, (2)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, (3)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada
Reveal of the pre-seismic phase of the seismic cycle from space geodetic observations over the area of Tohoku earthquake 2011 (428699)
Grigory M Steblov1,2, Irina A Sdelnikova3 and Leopold Isaevich Lobkovsky2,4, (1)Schmidt Institute of Physics of the Earth RAS, Moscow, Russia, (2)Moscow Institute of Physics and Technology, Moscow, Russia, (3)Geopsical Survey RAS, Obninsk, Russia, (4)Institute of oceanology, Moscow, Russia
Hydro-mechanical controls on the geometry of active accretionary wedges (362183)
Insun Song, KIGAM Korea Institute of Geoscience and Mineral Resources, Daejeon, Korea, Republic of (South)
Paleo-thermal anomaly along with the decollement off the Cape of Muroto, Japan: controlled by subduction (428310)
Nana Kamiya1,2, Takehiro Hirose2, Yuzuru Yamamoto3, Yohei Hamada2, Stephen Bowden4, Man-Yin Tsang5, Kiho Yang6, Satoshi Tonai7, Weiren Lin2,8 and Expedition 370 Scientists, (1)Kyoto University, Graduate School of Engineering, Kyoto, Japan, (2)JAMSTEC, Kochi Institute for Core Sample Research, Nankoku, Japan, (3)JAMSTEC, Yokohama, Japan, (4)University of Aberdeen, Aberdeen, United Kingdom, (5)University of Washington, School of Oceanography, Seattle, United States, (6)Pusan National University, Institute for Future Earth, Busan, Korea, Republic of (South), (7)Kochi University, Kochi, Japan, (8)Kyoto University, Kyoto, Japan
Initial data observed by LTBMS sensors installed in the IODP C0006G observatory (456047)
Toshinori Kimura1, Eiichiro Araki2, Yuya Machida3, Keir Becker4, Masataka Kinoshita5, Sean Toczko6, Earl Davis7, Masanori Kyo1 and IODP Exp.380 Shipboard scientists, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, (3)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokohama, Japan, (4)University of Miami - RSMAES, Miami, United States, (5)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, (6)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Chikyu Operations Department, Kanagawa, Japan, (7)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada
Temperature distribution of the toe of Nankai Trough off Muroto revealed from IODP Exp370 borehole observatory (362192)
Masataka Kinoshita, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan, Fumio Inagaki, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, Yuki Morono, JAMSTEC, Kochi Institute for Core Sample Research, Kochi, Japan, Verena Heuer, Bremen University, Bremen, Germany and IODP Exp370 Science Party, KR18-04 Shipboard Science Party
Investigating seismogenesis of the southern Mariana subduction zone through ocean bottom seismic experiments (377546)
Gaohua Zhu, Chinese University of Hong Kong, Hong Kong, Hong Kong, Hongfeng Yang, Earth System Science Programme, Faculty of Science, Chinese University of Hong Kong, Hong Kong, China and Jian Lin, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, United States; Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
Seismicity of the Incoming Plate and Forearc at the Mariana Trench Recorded by Ocean Bottom Seismographs (380541)
Melody O Eimer, Washington University in St Louis, Department of Earth and Planetary Sciences, St. Louis, MO, United States, Douglas Wiens, Washington University in St. Louis, Department of Earth, Environmental, and Planetary Science, St. Louis, United States, Chen Cai, Washington University in St Louis, Earth and Planetary Sciences, St. Louis, United States, Daniel Lizarralde, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, United States and Hope Abigail Jasperson, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States
Stress Drop Analysis of Cascadia Rupture Scenarios (364421)
Matthew Charles Ritchie Sypus1, Kelin Wang1,2, Dawei Gao1, Tania Lado Insua3, Simon E Engelhart4, Andrea Hawkes5 and Jason Scott Padgett6, (1)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, (2)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, (3)Ocean Networks Canada, Victoria, BC, Canada, (4)University of Rhode Island, Department of Geosciences, Narragansett, RI, United States, (5)University of North Carolina at Wilmington, Earth and Ocean Sciences, Wilmington, United States, (6)USGS Pacific Coastal and Marine Science Center, Santa Cruz, United States
Determination of coseismic frictional properties on the megathrust during the 2012 M7.6 Nicoya earthquake (365717)
Suli Yao, Chinese University of Hong Kong, Earth System Science Programme, Hong Kong, Hong Kong and Hongfeng Yang, Chinese University of Hong Kong, Hong Kong, Hong Kong
Geometrical and frictional effects on incomplete rupture and shallow slip deficit in ramp-flat structures (386603)
Dr. Shaoyang Li, University of Iowa, Iowa City, IA, United States, William D Barnhart, U.S. Geological Survey, Earthquake Hazards Program, Golden, United States and Marcos Moreno, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Crustal and Upper Mantle Velocity Structure of the Northwestern South American-Caribbean Subduction Zone Revealed by the CARMArray (396277)
John Cornthwaite1, Wenpei Miao2, Alan Levander3, Fenglin Niu4, Michael Schmitz5, Viviana Dionicio6, Maria Fernanda Nader-Nieto6 and Maximiliano Bezada7, (1)Rice University, Earth, Environmental, and Planetary Science, Houston, TX, United States, (2)Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States, (3)Rice University, Earth, Environmental and Planetary Sciences, Houston, United States, (4)University of Science and Technology of China (USTC), Anhui, China, (5)Fundacion Venezolana de Investigaciones Sismologicas, Caracas, Venezuela, (6)Servicio Geológico Colombiano, Red Sismológica Nacional de Colombia, Bogotá, Colombia, (7)University of Minnesota, Earth & Environmental Sciences, Minneapolis, United States
Small repeating earthquakes beneath the Tokai region, around the The Fujikawa-kako Fault Zone, central Japan, from 1979 to 2017 derived from NIED Kanto-Tokai seismic network and the NIED Hi-net. (402252)
Dr. Makoto Matsubara, NIED National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan and Hiroshi Sato, Univ Tokyo, Tokyo, Japan
Far-field Viscoelastic Postseismic Deformation of the 2011 Mw9 Tohoku Earthquake and Implications to Spatial Variations in Mantle Viscosity (434910)
Yan Hu, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Min Wang, Institute of Geology, China Earthquake Administration, Beijing, China, Bin Zhao, Institute of Seismology, China Earthquake Administration, Wuhan, China and Kelin Wang, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada
A comparison of lower plate structure and morphology in subduction-zone segments affected by tsunami earthquakes (370404)
Jacob Geersen, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Influence of elastic properties around the shallow megathrust on tsunami earthquake rupture characteristics (440323)
Valenti Sallares, Institute of Marine Sciences-CSIC, Barcelona, Spain and Cesar R Ranero, Institució Catalana de Recerca i Estudis Avançats, ICREA, Barcelona, Spain, Barcelona, Spain
Dynamics of Subduction-induced Overriding Lithosphere Thinning: Numerical Modeling (388957)
Yanan Shi, China University of Petroleum, Beijing, Beijing, China, Pengpeng Huangfu, University of Chinese Academy of Sciences, Beijing, China, Zhong-Hai Li, University of Chinese Academy of Sciences,Beijing, China, College of Earth and Planetary Sciences, Beijing, China, Dongping Wei, UCAS University of Chinese Academy of Sciences, Beijing, China and Fenglin Niu, University of Science and Technology of China (USTC), Anhui, China; China University of Petroleum, Unconventional Petroleum Research Institute, State Key Laboratory of Petroleum Resources and Prospecting, Beijing, China

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