[S-CG53] Science of slow earthquakes: Toward unified understandings of whole earthquake process

Thu. May 24, 2018 1:45 PM - 3:15 PM Convention Hall B (CH-B) (2F International Conference Hall, Makuhari Messe)

convener:Satoshi Ide(Department of Earth an Planetary Science, University of Tokyo), Hitoshi Hirose(Research Center for Urban Safety and Security, Kobe University), Kohtaro Ujiie(筑波大学生命環境系, 共同), Takahiro Hatano(Earthquake Research Institute, University of Tokyo), Chairperson:Mochizuki Kimihiro(Earthquake Research Institute, University of Tokyo), Ando Ryosuke(Graduate School of Science, University of Tokyo)

Accumulating observational studies on various types of slow deformation events, such as tectonic tremors, very low frequency events, and slow slip events, portrays some universal characteristics in generally complex behavior, including interaction among events and influence by various outer loadings. Some of these phenomena seem to have causal relation with the occurrence of very large earthquakes. A unified understanding of these slow and fast earthquake processes requires an approach integrating geophysics, seismology, geodesy, geology, and non-equilibrium statistical physics. We welcome presentations based on, but not limited to, geophysical observation, data analysis, analytical theory, numerical simulation, field study, and laboratory experiments.

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1:45 PM - 2:00 PM

[SCG53-25] On 3-D resistivity structure obtained from the Network-MT survey in the SW part of Shikoku-Island, SW Japan

*Makoto Uyeshima¹, Maki Hata¹, Hiroshi Ichihara², Ryokei Yoshimura³, Koki Aizawa⁴ (1.Earthquake Research Institute, The University of Tokyo, 2.Graduate School of Environmental Studies, Nagoya University, 3.Disaster Prevention Research Institute, Kyoto University, 4.Graduate School of Science, Kyushu University)

2:00 PM - 2:15 PM

[SCG53-26] Seismic velocity and anisotropy in a slow slip region of the Hikurangi Margin, New Zealand from ocean bottom seismometers

★Invited Papers

*Martha K Savage¹, Hubert Zal¹, Katrina Jacobs², Stefan Mroczek¹, Kenny Graham¹, Jefferson Yarce³, Wei-wei Wang¹, Bill Fry², Erin Todd⁴, Heather Shaddox⁵, Jenny Nakai³, Yuriko Iwasaki⁶, Anne Sheehan³, Kimihiro Mochizuki⁶, Susan Schwartz⁵, Laura M Wallace² (1.Victoria Univ. of Wellington, New Zealand, 2.GNS Science, New Zealand, 3.Univ. Colorado, Boulder, USA, 4.Univ. of Otago, New Zealand, 5.Univ. California, Santa Cruz, USA, 6.Earthquake Research Institute, Univ. of Tokyo)

2:15 PM - 2:30 PM

[SCG53-27] Preliminary results of lithostratigraphy in IODP Expedition 375: Hikurangi subduction margin coring and observatories

★Invited Papers

*Yoshitaka Hashimoto¹, Christie Oliveira⁷, Steffen Kutterolf¹³, Francesca Meneghini¹⁷, Atsushi Noda¹⁹, Hannah Rabinowitz²⁰, Michael Underwood²², Demian M Saffer², Laura Wallace³, Katerina Petronotis⁴, Philip Barnes⁵, Rebecca Bell⁶, Martin Crundwell³, Ake Fagereng⁸, Patrick Fulton⁴, Annika Greve⁹, Robert Harris¹⁰, Andre Hüpers¹¹, Matt Ikari¹¹, Yoshihiro Ito¹², Hiroko Kitajima⁴, Hikweon Lee¹⁵, Xuesen Li¹⁴, Min Luo²⁵, Pierre Malie¹⁶, Julia Morgan¹⁸, Heather Savage²⁰, Claire Shepherd³, Srisharan Shreedharan², Evan Solomon²¹, Maomao Wang²³, Adam Woodhouse²⁴ (1.Kochi University, 2.Pennsylvania State University, 3.GNS Science, 4.Texas A&M University, 5.National Institute of Water and Atmospheric Research, 6.Imperial College London, 7.Universidade do Vale do Rio dos Sinos, 8.Cardiff University, 9.JAMSTEC, 10.Oregon State University, 11.University of Bremen, 12.Kyoto University, 13.GEOMAR, 14.Guilin University of Technology, 15.KIGAM, 16.UniLaSalle Terre & Sciences, 17.Università degli Studi di Pisa, 18.Rice University, 19.AIST, 20.Columbia University, 21.University of Washington, 22.New Mexico Institute of Mining and Technology, 23.Hohai University, 24.University of Leeds, 25.Shanghai Ocean University)

2:30 PM - 2:45 PM

[SCG53-28] Mixing and reaction of rocks facilitate fluid flow along the forearc slab-mantle interface

*Yasushi Mori¹, Miki Shigeno¹, Tadao Nishiyama² (1.Kitakyushu Museum of Natural History and Human History, 2.Kumamoto University)

2:45 PM - 3:00 PM

[SCG53-29] Metasomatic reaction and localization of low-angle thrust-sense viscous shear recorded in subduction mélanges exhumed from source depths of slow earthquakes

*Kazuya Noro¹, Kohtaro Ujiie^1,2, Naoki Nishiyama¹, Yasushi Mori³, Haruna Masuyama¹ (1.University of Tsukuba, 2.JAMSTEC, 3.Kitakyusyu Museum of Natural History & Human History)

3:00 PM - 3:15 PM

[SCG53-30] Physical and geological entity of brittle-ductile heterogeneous fault zones at transition depth

*Ryosuke Ando¹ (1.Graduate School of Science, University of Tokyo)

Session information

[S-CG53] Science of slow earthquakes: Toward unified understandings of whole earthquake process

[SCG53-25] On 3-D resistivity structure obtained from the Network-MT survey in the SW part of Shikoku-Island, SW Japan

[SCG53-26] Seismic velocity and anisotropy in a slow slip region of the Hikurangi Margin, New Zealand from ocean bottom seismometers

★Invited Papers

[SCG53-27] Preliminary results of lithostratigraphy in IODP Expedition 375: Hikurangi subduction margin coring and observatories

★Invited Papers

[SCG53-28] Mixing and reaction of rocks facilitate fluid flow along the forearc slab-mantle interface

[SCG53-29] Metasomatic reaction and localization of low-angle thrust-sense viscous shear recorded in subduction mélanges exhumed from source depths of slow earthquakes

[SCG53-30] Physical and geological entity of brittle-ductile heterogeneous fault zones at transition depth

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