JpGU Meeting 2019
Session outline| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Complex & General(CG) | |
| Session ID | S-CG57 | |
| Title | Structure and evolution of Japanese islands - Formation of island arc systems and earthquake cycles | |
| Short Title | Structure and evolution of Japanese arcs | |
| Main Convener | Name | Hiroshi Sato |
| Affiliation | Earthquake Prediction Research Center, Earthquake Research Institute, The University of Tokyo | |
| Co-Convener 1 | Name | Masanao Shinohara |
| Affiliation | Earthquake Research Institute, University of Tokyo | |
| Co-Convener 2 | Name | Masahiro Ishikawa |
| Affiliation | Graduate School of Environment and Information Sciences Yokohama National University | |
| Co-Convener 3 | Name | Makoto MATSUBARA |
| Affiliation | National Research Institute for Earth Science and Disaster Resilience | |
| Session Language | J | |
| Scope | Subduction processes such as accretion, back-arc-spreading, and arc-arc collisions have shaped the Japanese island arc. Recent advances in seismic imaging, both passive and controlled source, have produced new images of the crust-mantle structure under Japan and surrounding regions. Through the influence of pre-existing faults and rheological structures, these crust and mantle structures are exerting strong control on active tectonic processes like seismic activity and crustal deformation in the overriding plate. We seek contributions that document and/or model the deformation of the Japanese islands over a variety of time scales from the earthquake cycle to the tectonic evolution of the Japanese island arc, and from a range of research fields including seismology, geology, geochemistry, tectonic geomorphology, and geodynamics. Multidisciplinary studies are encouraged. We also welcome contributions in numerical or analogue geodynamical modeling that explore deformation processes. | |
| Presentation Format | Oral and Poster presentation | |
| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 29 AM1 | ||||
| 09:00 - 09:15 | SCG57-01 | Recent Earthquake Activity in Northern Hokkaido, Japan | Tetsuo Takanami | |
| 09:15 - 09:30 | SCG57-02 | Seismic constraints on the crustal structure off the southwestern coast of Hokkaido, Japan Sea | Tetsuo No | |
| 09:30 - 09:45 | SCG57-03 | Deep seismic reflection profiling across the Oshima Peninsula, SW Hokkaido, Japan | Hiroshi Sato | |
| 09:45 - 10:00 | SCG57-04 | Crustal deformation and stress accumulation on source faults around Hokkaido, Japan, due to coupling at the Kuril trench | Akinori Hashima | |
| 10:00 - 10:15 | SCG57-05 | Structural Heterogeneity in and around the Source Region of the 2018 Hokkaido Eastern Iburi Earthquake, Central Hokkaido, Japan | Takaya Iwasaki | |
| 10:15 - 10:30 | SCG57-06 | Electrical resistivity distribution around the middle axis of Hokkaido Island: constraint for tectonics of ultra-mafic rocks | Hiroshi Ichihara | |
| Oral Presentation May 29 AM2 | ||||
| 10:45 - 11:00 | SCG57-07 | Three-dimensional seismic velocity structure beneath and around Japanese Islands including beneath the Pacific Ocean using NIED S-net data | Makoto MATSUBARA | |
| 11:00 - 11:15 | SCG57-08 | Spatio-temporal extent of Cretaceous fore-arc basin in Japan | Yukio Isozaki | |
| 11:15 - 11:30 | SCG57-09 | Geotectonic identities of dismembered ancient fore-arc clastics: U-Pb dating of detrital zircons in Cretaceous-Paleogene shallow marine/fluvial sandstones sporadically found in Kanto, central Japan | Ryo Hasegawa | |
| 11:30 - 11:45 | SCG57-10 | Laboratory Measurements of Vp, Vs and Vp/Vs for polycrystalline labradorite up to 800°C and 1GPa | Satoko Honda | |
| 11:45 - 12:00 | SCG57-11 | Shallow to deeper structures of the Median Tectonic Line active fault system in Shikoku illuminated by new hi-resolution seismic reflection profiling, southwest Japan | Tatsuya Ishiyama | |
| 12:00 - 12:15 | SCG57-12 | Cenozoic evolution of the Tsushima Strait and the Fukue Basin, southern Sea of Japan: an interplay of tectonics, palaeo-environment, and volcanism | Johan S. Claringbould | |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 29 PM2 | |||
| SCG57-P01 | Crustal structure from the Japan Sea back-arc basin to the margin off SW Hokkaido deduced from the seismic survey | Takeshi Sato | |
| SCG57-P02 | Three-dimensional plate geometry model from the Nankai to the Ryukyu subduction zone | Ayako Nakanishi | |
| SCG57-P03 | Trace elements and Sr-Nd-Hf-Pb isotopic composition of Miocene Tomari volcanic rocks, Shimokita Peninsula, Aomori, NE Japan | Masataka Aizawa | |
| SCG57-P04 | Acceleration of oceanic plate following megathrust earthquakes | Mohammad Yuzariyadi | |
| SCG57-P05 | 3D velocity model in the region of Nankai Trough | Minako KATSUYAMA | |
| SCG57-P06 | Depth of seismogenic layer at the 2018 North Osaka and the 2018 Hokkaido Eastern Iburi earthquake sites | Tomoko Elizabeth Yano | |
| SCG57-P07 | Seismic reflection profiling across the Median Tectonic Line (MTL) active fault system in Ehime and Tokushima Prefectures | Naoko Kato | |