Mon. May 22, 2023 10:45 AM - 12:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

convener:Masanao Shinohara(Earthquake Research Institute, University of Tokyo), Ryota Hino(Graduate School of Science, Tohoku University), Shuichi Kodaira(Research Institute of Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Shin Aoi(National Research Institute for Earth Science and Disaster Resilience), Chairperson:Shin Aoi(National Research Institute for Earth Science and Disaster Resilience), Ryota Hino(Graduate School of Science, Tohoku University)

Mon. May 22, 2023 1:45 PM - 3:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

convener:Masanao Shinohara(Earthquake Research Institute, University of Tokyo), Ryota Hino(Graduate School of Science, Tohoku University), Shuichi Kodaira(Research Institute of Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Shin Aoi(National Research Institute for Earth Science and Disaster Resilience), Chairperson:Shuichi Kodaira(Research Institute of Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Masanao Shinohara(Earthquake Research Institute, University of Tokyo)

Tue. May 23, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (14) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

convener:Masanao Shinohara(Earthquake Research Institute, University of Tokyo), Ryota Hino(Graduate School of Science, Tohoku University), Shuichi Kodaira(Research Institute of Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Shin Aoi(National Research Institute for Earth Science and Disaster Resilience)

Mon. May 22, 2023 9:00 AM - 10:15 AM 106 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

10:00 AM - 10:15 AM

[SSS04-05] Seismic investigation of internal structures of submarine volcanos in shallow water by full waveform inversion

*Mehmet Ali Uge^1,3, Kazuya Shiraishi¹, Gou Fujie¹, Yasuyuki Nakamura¹, Shuichi Kodaira¹, Kei Kawamata², Keisuke Uchiyama² (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, 2.Electric Power Development Co., Ltd., Tokyo, Japan, 3.Istanbul University-Cerrahpasa, Engineering Faculty, Department of Geophysical Engineering, Buyukcekmece, Istanbul, Turkey)

Wed. May 24, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (13) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS08] Crustal Structure

10:45 AM - 12:15 PM

[SSS08-P05] Seismic structural characteristics illuminating a large shallow slip zone in the 17th-century Kuril earthquake

*Ryosuke Azuma¹, Shuichi Kodaira², Ryota Hino¹, Gou Fujie², Koichiro Obana², Fumiaki Tomita³, Yusaku Ohta¹ (1.Recearch Center for Prediction of Earthquake and Volcanic Eruption, Graduate School of Science, Tohoku University, 2.Japan Agency for Marine-Earth Science and Tecnology , 3.International Research Institute of Disaster Science, Tohoku University)

Wed. May 24, 2023 9:00 AM - 10:15 AM 303 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC34] Volcanoes in the Sea

9:30 AM - 9:45 AM

[SVC34-03] Low-velocity anomaly beneath Kikai-caldera submarine volcano, Japan, revealed by seismic refraction survey

*Akihiro Nagaya¹, Gou Fujie², Shuichi Kodaira², Satoru Tanaka², Yojiro Yamamoto², Hiroko Sugioka^3,1, Hiroki Miyamachi⁴, Tetsuo Matsuno³, Hironori Otsuka³, Keita Suzuki⁵, Nobukazu Seama^1,3 (1.Department of Planetology, Graduate School of Science, Kobe University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Kobe Ocean-Bottom Exploration Center, Kobe University, 4.Graduate School of Science and Engineering, Kagoshima University, 5.Nippon Marine Enterprises, Ltd)

Sun. May 21, 2023 10:45 AM - 12:00 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-TT Technology & Techniques

[S-TT42] Applying optic fiber sensing to earth science

11:45 AM - 12:00 PM

[STT42-09] Seismic, geodetic and tsunami monitoring using seafloor cables with optical fiber sensing: Concept and Implementation

*Masanao Shinohara¹, Shin Aoi², Takeshi Akuhara¹, Eiichiro Araki³, Koichiro Obana³, Masataka Kinoshita¹, Takashi Kunugi², Shuichi Kodaira³, Tetsuya Takeda², Takashi Tonegawa³, Masaru Nakano³, Kiwamu Nishida¹, Kimihiro Mochizuki¹, Tomoaki Yamada¹ (1.Earthquake Research Institute, University of Tokyo, 2.National Research Institute for Earth Science and Disaster Resilience, 3.Japan Agency for Marine-Earth Science and Technology)

Fri. May 26, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (16) (Online Poster)

[E] Online Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

10:45 AM - 12:15 PM

[SCG45-P34] Seismic Imaging of the Subducted Seamount in a High-Tremor Seismicity Region in the Hyuga-nada, Nankai Trough

*Yanxue Ma¹, Rie Nakata¹, Kimihiro Mochizuki¹, Yoshitaka Hashimoto², Yohei Hamada³, Ryuta Arai⁴, Seiichi Miura⁴, Yasuyuki Nakamura⁴, Gou Fujie⁴, Yuka Kaiho⁴, Shuichi Kodaira⁴ (1.Earthquake Research Institute, University of Tokyo, 2.Kochi University, 3.Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research, 4.Japan Agency for Marine-Earth Science and Technology)

Fri. May 26, 2023 1:45 PM - 3:15 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

2:00 PM - 2:15 PM

[SCG45-33] Crustal structure of the Nankai subduction zone revealed by two decades of onshore-offshore and ocean-bottom seismic data: Implications for the Dimensions and Slip Behavior of the Seismogenic Zone

*Dan Bassett 500203¹, Adrien Arnulf², Shuichi Kodaira³, Ayako Nakanishi³, Alistair Harding⁴, Gregory F Moore⁵ (1.GNS Science, 2.University of Texas at Austin, 3.JAMSTEC, 4.Scripps Institution of Oceanography, 5.Department of Earth Sciences, University of Hawaii)

2:15 PM - 2:30 PM

[SCG45-34] Correlation between plate boundary structure and distribution of shallow slow earthquakes in the western Nankai Trough

*Ryuta Arai¹, Kazuya Shiraishi¹, Seiichi Miura¹, Tsutomu Takahashi¹, Yasuyuki Nakamura¹, Gou Fujie¹, Shuichi Kodaira¹, Yuka Kaiho¹, Yohei Hamada¹, Yanxue Ma² (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, The University of Tokyo)

2:30 PM - 2:45 PM

[SCG45-35] Spatial gap of slow earthquakes and structural features revealed by seismic reflection profiles in the Nankai Trough

*Kazuya Shiraishi¹, Gaku Kimura¹, Yasuyuki Nakamura¹, Gou Fujie¹, Shuichi Kodaira¹, Paul Flores² (1.Japan Agency for Marine-Earth Science and Technology, 2.Yokohama National University)

Thu. May 25, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (20) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG61] Quest for the state & mechanism of subduction-zone earthquake through experiments across-scales

10:45 AM - 12:15 PM

[SCG61-P04] Mapping prism taper angle and roughness of the subducted oceanic crust off Muroto using seismic reflection data and its implication for slow earthquake activity

*Paul Caesar Mason Flores^1,2, Shuichi Kodaira^1,2, Gaku Kimura², Kazuya Shiraishi², Yasuyuki Nakamura², Gou Fujie², Tetsuo No², Yuka Kaiho² (1.Graduate School of Environment and Information Sciences, Yokohama National University, 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan)

Mon. May 22, 2023 10:45 AM - 12:00 PM 202 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG63] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

10:45 AM - 11:00 AM

[SCG63-06] Effects of rough relief of subducting plate on the deformation of frontal accretionary wedge and SVLFEs activity in the Nankai Trough

*Gaku Kimura¹, Kazuya Shiraishi¹, Yasuyuki Nakamura¹, Shuichi Kodaira¹, Gou Fujie¹ (1.Japan Agency for Marine Science and Technology)

Tue. May 23, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (6) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG63] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

1:45 PM - 3:15 PM

[SCG63-P01] Preliminary report on a seismic reflection survey off the northern coast of Sanriku-Oki, Japan Trench

*Tetsuo No¹, Yasuyuki Nakamura¹, Ryo Miura¹, Kazuya Shiraishi¹, Gou Fujie¹, Shuichi Kodaira¹, YUE SUN², Yuqi Lyu², Jin-Oh Park² (1.JAMSTEC, 2.AORI, Univ. of Tokyo)

1:45 PM - 3:15 PM

[SCG63-P06] Along-axis structural variation of the Japan Trench incoming plate revealed by densely spaced reflection profiles

*Yasuyuki Nakamura¹, Shuichi Kodaira¹, Gou Fujie¹, Mikiya Yamashita², Koichiro Obana¹, Seiichi Miura¹ (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2.National Institute of Advanced Industrial Science and Technology (AIST))

1:45 PM - 3:15 PM

[SCG63-P08] Spatial variations in the crustal thickness of the oceanic Pacific plate and its implication to subduction zone processes

*Gou Fujie¹, Shuichi Kodaira¹, Koichiro Obana¹, Yojiro Yamamoto¹, Takehi Isse², Tomoaki Yamada², Tetsuo No¹, Yasuyuki Nakamura¹, Seiichi Miura¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute, Univ. of Tokyo)

1:45 PM - 3:15 PM

[SCG63-P10] Hurst exponents of surface geometry of the subducting Philippine Sea Plate estimated by the lifting scheme

*Tsutomu Takahashi¹, Ayako Nakanishi¹, Shuichi Kodaira¹, Yoshiyuki Kaneda² (1.Japan Agency for Marine-Earth Science and Technology, 2.Kagawa University)

Wed. May 24, 2023 3:30 PM - 4:45 PM Exhibition Hall Special Setting (2) (Exhibition Hall 8, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-GI General Geosciences, Information Geosciences & Simulations

[M-GI28] Drilling Earth Science

3:30 PM - 3:45 PM

[MGI28-01] IODP Expedition 405, JTRACK: Tracking Tsunamigenic Slips Across and Along the Japan Trench

*Shuichi Kodaira¹, James Sample², Michael Strasser³, Kohtaro Ujiie⁴, James D Kirkpatrick⁵, Patrick Fulton ⁶, Japanese proponent group (1.Japan Agency for Marine-Earth Science and Technology, 2.Northern Arizona University, 3.University of Innsbruck, 4.University of Tsukuba, 5.McGill University, 6.Cornell University)

Shuichi Kodaira

Convener, Chairperson

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

[S-SS12] Frontiers of Marine Observation for Earthquake, Tsunami and Crustal Deformation

Speaker, Author, Co-Author

[S-SS04] Seismological advances in the ocean

[SSS04-05] Seismic investigation of internal structures of submarine volcanos in shallow water by full waveform inversion

[S-SS08] Crustal Structure

[SSS08-P05] Seismic structural characteristics illuminating a large shallow slip zone in the 17th-century Kuril earthquake

[S-VC34] Volcanoes in the Sea

[SVC34-03] Low-velocity anomaly beneath Kikai-caldera submarine volcano, Japan, revealed by seismic refraction survey

[S-TT42] Applying optic fiber sensing to earth science

[STT42-09] Seismic, geodetic and tsunami monitoring using seafloor cables with optical fiber sensing: Concept and Implementation

[S-CG45] Science of slow-to-fast earthquakes

[SCG45-P34] Seismic Imaging of the Subducted Seamount in a High-Tremor Seismicity Region in the Hyuga-nada, Nankai Trough

[S-CG45] Science of slow-to-fast earthquakes

[SCG45-33] Crustal structure of the Nankai subduction zone revealed by two decades of onshore-offshore and ocean-bottom seismic data: Implications for the Dimensions and Slip Behavior of the Seismogenic Zone

[SCG45-34] Correlation between plate boundary structure and distribution of shallow slow earthquakes in the western Nankai Trough

[SCG45-35] Spatial gap of slow earthquakes and structural features revealed by seismic reflection profiles in the Nankai Trough

[S-CG61] Quest for the state & mechanism of subduction-zone earthquake through experiments across-scales

[SCG61-P04] Mapping prism taper angle and roughness of the subducted oceanic crust off Muroto using seismic reflection data and its implication for slow earthquake activity

[S-CG63] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

[SCG63-06] Effects of rough relief of subducting plate on the deformation of frontal accretionary wedge and SVLFEs activity in the Nankai Trough

[S-CG63] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

[SCG63-P01] Preliminary report on a seismic reflection survey off the northern coast of Sanriku-Oki, Japan Trench

[SCG63-P06] Along-axis structural variation of the Japan Trench incoming plate revealed by densely spaced reflection profiles

[SCG63-P08] Spatial variations in the crustal thickness of the oceanic Pacific plate and its implication to subduction zone processes

[SCG63-P10] Hurst exponents of surface geometry of the subducting Philippine Sea Plate estimated by the lifting scheme

[M-GI28] Drilling Earth Science

[MGI28-01] IODP Expedition 405, JTRACK: Tracking Tsunamigenic Slips Across and Along the Japan Trench