OS53A:
Geological, Oceanographic, and Biological Processes of the Western Pacific Convergent Margins and Trenches II Posters

Submit an Abstract to this Session



Session ID#: 22908

Session Description:
The western Pacific Ocean is dominated by major convergent plate margins and deep trenches, providing a unique natural laboratory to investigate Earth’s lithosphere-ocean-biosphere interaction, from subduction plate mantle dynamics, to deep ocean circulation and mixing, to microorganisms in the hadal extreme environment. The last few years have witnessed major progress by the international community in multi-disciplinary investigations of the Mariana, Izu-Bonin, Japan, and other western Pacific trench systems. This session will highlight these recent advances, promote inter-disciplinary exchanges, and enhance further international collaborations. We welcome contributions from a wide spectrum of research: (1) Geology, geophysics, and geodynamics of the subduction process and convergent plate margins; (2) Petrology and geochemistry of margin volcanism; (3) Physical and chemical oceanography of the deep ocean circulation, mixing, and interaction with mid- and upper ocean layers; (4) Microbiology of the water column and sediments; and (5) Interaction between geological, oceanographic, and biological processes.
Primary Convener:  Jian Lin, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States
Conveners:  Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States, Yasuhiko Ohara, Nagoya University, Nagoya, Japan and Chuanlun Zhang, Southern University of Science & Technology, Department of Ocean Science and Engineering, Shenzhen, China
Chairs:  Jian Lin, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Chuanlun Zhang, Southern University of Science & Technology, Department of Ocean Science and Engineering, Shenzhen, China and Robert J Stern, University of Texas at Dallas, Dept. of Sustainable Earth Systems Sciences, Richardson, TX, United States
OSPA Liaison:  Chuanlun Zhang, Southern University of Science & Technology, Department of Ocean Science and Engineering, Shenzhen, China

Cross-Listed:
  • B - Biogeosciences
  • PP - Paleoceanography and Paleoclimatology
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8104 Continental margins: convergent [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]
8413 Subduction zone processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

Seismic experiments investigating plate dyanmics of the Challenger Deep region in Southern Mariana Trench (237550)
Jian Lin1, Jinlong Sun2, Min Xu3, Xin Zeng4, Zhiyuan Zhou5 and Science Party of R/V Shiyan 35, (1)Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (3)CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Guangzhou, China, (4)South China Sea Institute of Oceanology, Key Laboratory of Marginal Sea Geology, Guangzhou, China, (5)South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
UNDERSTANDING EXTENSION IN THE SOUTHERN MARIANAS AND THE CHALLENGER DEEP: A 21ST CENTURY GEOSCIENTIFIC CHALLENGE (265993)
Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States, Julia Ribeiro, Rice University, Houston, TX, United States, Fernando Martinez, Univ of Hawaii-SOEST/HIGP, Honolulu, HI, United States and Yasuhiko Ohara, Nagoya University, Nagoya, Japan
Southern Mariana OBS Experiment and Preliminary Results of Passive-Source Investigations (237967)
Ba Manh Le, Tongji University, State Key Laboratory of Marine Geology, Shanghai, China, Jian Lin, Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Ting Yang, Southern University of Science and Technology, School of Oceanography,, Shenzhen, China, Science Party of R/V Shiyan 3, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China and Science Parties of R/V Shiyan 3
Lateral-delivered organic matter boosts hadal bacterial abundance in the Mariana Trench: A hypothesis (297277)
Chuanlun Zhang1, Haodong Liu2, Fan Lu3, Li Zou4 and Jiwei Tian4, (1)Southern University of Science and Technology, Department of Ocean Science and Engineering, Shen Zhen, China, (2)State Key Laboratory of Marine Geology, Tongji University, Shanghai, China, (3)Department of Ocean Science and Engineering, South University of Science and Technology, Shenzhen, China, (4)Ocean University of China, Qingdao, China
Distribution and composition of dissolved amino acids in seawater at the Yap Trench (240196)
Lei Xie1, Yixin Yan1, ChengJun Sun2, Guipeng Yang1 and Haibing Ding3, (1)Ocean University of China, Qingdao, China, (2)First Institute of Oceanography, State Oceanic Administration, Qingdao, China, (3)Ocean University of China, Key Laoboratory of Marine Chemistry and Technology, Ministry of Education, Qingdao, China
Potential interactions between heterotrophic archaea and bacteria for degrading particulate organic carbon in marine water column (296900)
Haodong Liu, Tongji University, Shanghai, China, Chuanlun Zhang, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shen Zhen, China and Jiwei Tian, Ocean University of China, Qingdao, China
Dust fluxes linked to intensification of Prevailing Westerlies and Trade Winds stimulated Ethmodiscus rex giant diatom blooms in the southern Mariana Trench, western tropical Pacific at onset of the Last Glacial Maximum (277189)
Min Luo1, Duofu Chen2, Thomas J Algeo3 and Linying Chen2, (1)Shanghai Ocean University, College of Marine Sciences, Lingang, China, (2)Shanghai Ocean University, Shanghai, China, (3)China University of Geosciences Wuhan, Wuhan, China
Sedimentary structure and tectonic setting of the abyssal basins adjoining the southeast part of the Ontong Java Plateau, western Pacific Ocean (265738)
Shoka Shimizu1, Nakanishi Masato1, Seiichi Miura2 and Daisuke Suetsugu3, (1)Chiba University, Chiba, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, (3)JAMSTEC, Yokosuka, Japan
Elasto-plastic deformation and plate weakening due to normal faulting in the subducting plate along the Mariana Trench (229059)
Zhiyuan Zhou, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China and Jian Lin, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Tectonics and Non-isostatic Topography of the Mariana Trench and Adjacent Plates (237510)
Li Hongyu, Tongji University, Shanghai, China, Jian Lin, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Zhiyuan Zhou, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China and Fan Zhang, Southern University of Science and Technology of China, Shenzhen, China
Investigation of the shallow megathrust in the southern Mariana subduction zone through ocean bottom seismic experiments (230940)
Gaohua Zhu, Chinese University of Hong Kong, Earth System Science Programme, Hong Kong 999077, China, Hongfeng Yang, Earth System Science Programme, Faculty of Science, Chinese University of Hong Kong, Hong Kong, China and Jian Lin, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
Preliminary results of the southern Mariana Trench wide-angle seismic experiment (234369)
Kuiyuan Wan1, Shaohong Xia1, Jian Lin2 and Jinlong Sun1, (1)SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (2)Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
The geochemical characteristics and sedimentary environment of abyss and hadal sediments of Yap-trench (241591)
Yuhuan Huang1, Mengqi Wang1, ChengJun Sun2, Guipeng Yang1 and Haibing Ding3, (1)Ocean University of China, Qingdao, China, (2)First Institute of Oceanography, State Oceanic Administration, Qingdao, China, (3)Ocean University of China, Key Laoboratory of Marine Chemistry and Technology, Ministry of Education, Qingdao, China
Drastic shift of lava geochemistry between pre- and post- Japan Sea opening in NE Japan subduction zone: constraints on source composition and slab surface melting processes (222623)
Satoshi Okamura, Hokkaido Soil Research Co-operation, Sapporo, Japan, Mitsuru Inaba, GeoPuck Associate, Tochigi, Japan, Satoshi Igarashi, Hosei Univ. Daini Junior and Senior High School, Kawasaki, Japan, Masataka Aizawa, University of the Ryukyus, Okinawa, Japan and Ryuichi Shinjo, Univ Ryukyus, Nishihara, Okinawa, Japan
Improving OBS operations in ultra-deep ocean during the Southern Mariana Trench expeditions (242389)
Xin Zeng, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, Jian Lin, Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Min Xu, CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Guangzhou, China and Zhiyuan Zhou, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Ocean and Marginal Sea Geology, Guangzhou, China
Seismic Characterization of Silica Diagenesis in the Northwestern Pacific (263087)
John Anthony Greene, Texas A&M University College Station, College Station, TX, United States, Daniel Lizarralde, WHOI, Woods Hole, MA, United States, Masako Tominaga, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States and Maurice Tivey, National Science Foundation, Arlington, VA, United States
Discovery of a new mud volcano field at the southern Mariana subduction zone (250814)
Mengran Du, Sanya Institute of Deep-sea Science and Engineering Chinese Academy of Sciences, Sanya, China
Insights into the Early to Late Oligocene Izu-Bonin Mariana Arc Magmatic History from Volcanic Minerals and Glass within Volcaniclastic Sediments of IODP Site U1438 and DSDP Site 296 (278402)
Eshita Samajpati, Florida International University, Miami, FL, United States and Rosemary Hickey-Vargas, FIU, Miami, FL, United States
Composition, characteristics and genesis of the ferromanganese crusts and nodules from the Indian and Pacific oceans (247276)
Shun Chen and Xiaotong Peng, Sanya Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
Controlling factors of stratigraphic occurrences of fine-grained turbidites: Examples from the Japanese waters (235658)
Ken Ikehara, Geological Survey of Japan, AIST, Tsukuba, Japan and Subaqueous event deposit study group

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