[S-SS04] [EE] Subduction zone dynamics from regular earthquakes through slow earthquakes to creep

Thu. May 25, 2017 9:00 AM - 10:30 AM A10 (Tokyo Bay Makuhari Hall)

convener:Kyuichi Kanagawa(Graduate School of Science, Chiba University), Kazushige Obara(Earthquake Research Institute, The University of Tokyo), Demian M Saffer(Pennsylvania State University), Laura Wallace(University of Texas Institute for Geophysics), Chairperson:Laura Wallace(University of Texas Institute for Geophysics), Chairperson:Yoshihiro Ito(Disaster Prevention Research Institute, Kyoto University)

Recent seismic and geodetic studies have revealed a variety of phenomena along subduction zone megathrusts, ranging from creep to earthquakes, including slow slip transients collectively known as slow earthquakes. This session aims to build on a growing and increasingly comprehensive understanding of the dynamics of this wide range of phenomena, based on results from a wide range of disciplines including observational geodesy and seismology, geological and geophysical studies of present and ancient subduction zones, borehole logging and monitoring, laboratory experiments, and theoretical and numerical modeling. We welcome presentations on, but not limited to, spatial and temporal distributions, geometry, source parameters and conditions, characteristic structures and material properties, and mechanics and mechanisms of a variety of phenomena occurring along subduction zone megathrusts, as well as on upper plate faults, and at trench axes and outer rises.

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9:00 AM - 9:15 AM

[SSS04-19] Controls on faulting, earthquakes and water cycling in the Alaska subduction zone

★Invited papers

*Donna J Shillington¹, Anne Bécel¹, Jiyao Li¹, Mladen R Nedimovic^2,1, Demian Saffer³, Geoffrey Abers⁴, Harold Kuehn², Spahr C Webb¹, Katie Keranen⁴ (1.Lamont-Doherty Earth Observatory of Columbia University, 2.Dalhousie University, 3.Pennsylvania State University, 4.Cornell University)

9:15 AM - 9:30 AM

[SSS04-20] Imaging the Plate Interface at the Hikurangi Subduction Margin, New Zealand

*Wiebke Heise¹, Yasuo Ogawa², T Grant Caldwell¹, Edward A Bertrand¹, Hiroshi Ichihara³, Ryokei Yoshimura⁴, Stewart L Bennie¹, Zenshiro Saito², Kaori Seki², Yasuo Matsunaga², Atsushi Suzuki², Takahiro Kishita², Yusuke Kinoshita² (1.GNS Science, PO Box 30368, Lower Hutt, New Zealand, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, Tokyo, Japan, 3.Kobe Ocean-Bottom Exploration Center (KOBEC), Kobe University, Kobe, Japan, 4.Disaster Prevention Research Istitute, Kyoto University, Kyoto, Japan)

9:30 AM - 9:45 AM

[SSS04-21] Structure and physical characteristics of the Hikurangi subduction zone derived from seismic full waveform imaging

*Adrien F Arnulf¹, Stuart Henrys, Dan Bassett, Laura Wallace, Gareth Crutchley (1.Institute for Geophysics, 2.GNS Science, 3.University of Auckland)

9:45 AM - 10:00 AM

[SSS04-22] Continuous shear wave signals following 2014 Mw 6.8 SSE in the Hikurangi subduction margin offshore New Zealand

*Iwasaki Yuriko¹, Kimihiro Mochizuki¹, Motoko Ishise¹, Erin K. Todd², Susan Y. Schwartz², Stuart Henrys³, Martha Savage⁴, Anne F. Sheehan⁵, Yoshihiro Ito⁶, Laura M. Wallace^3,7, Spahr C. Webb⁸, Tomoaki Yamada¹, Masanao Shinohara¹ (1.Earthquake Research Institute, Univ. of Tokyo, 2.Univ. of California Santa Cruz, 3.GNS Science, 4.Victoria Univ. of Wellington, 5.Cooperative Institute for Research in Environmental Sciences, Univ. of Colorado–Boulder, 6.Disaster Prevention Research Institute, Kyoto Univ., 7.Univ. of Texas Institute for Geophysics, 8.Lamont-Doherty Earth Observatory, Columbia Univ.)

10:00 AM - 10:15 AM

[SSS04-23] Widespread slow slip events triggered at the Hikurangi subduction zone by the M7.8 Kaikoura earthquake, New Zealand

*Laura M Wallace¹, Yoshihiro Kaneko², Elisabetta D'Anastasio², Sigrun Hreinsdottir², Noel Bartlow³, Bill Fry², Zhigang Peng⁴, Ian Hamling², Matt Gerstenberger² (1.GNS Science and University of Texas Institute for Geophysics, 2.GNS Science, 3.University of Missouri, 4.Georgia Tech)

10:15 AM - 10:30 AM

[SSS04-24] Near-source detection of near repeating seismicity triggered by shallow slow-slip, Northern Hikurangi, New Zealand

*Emily Warren-Smith¹, Bill Fry¹, Laura M Wallace¹, Kimihiro Mochizuki² (1.GNS Science, 2.ERI, University of Toyko)

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