Solid Earth Sciences(S)
Session Sub-categoryComplex & General
Session IDS-CG59
TitleStructure and evolution of Japanese islands - Formation of island arc systems and earthquake cycles
Short TitleStructure and evolution of Japanese arcs
Main ConvenerNameHiroshi Sato
AffiliationEarthquake Prediction Research Center, Earthquake Research Institute, The University of Tokyo
Co-Convener 1NameMasanao Shinohara
AffiliationEarthquake Research Institute, University of Tokyo
Co-Convener 2NameMasahiro Ishikawa
AffiliationGraduate School of Environment and Information Sciences Yokohama National University
Co-Convener 3NameMakoto MATSUBARA
AffiliationNational Research Institute for Earth Science and Disaster Resilience
Session LanguageEJ
ScopeSubduction 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 FormatOral and Poster presentation
Time Presentation No Title Presenter Abstract
Oral Presentation May 22 AM1
09:00 - 09:15 SCG59-01Construction of the structure model of Japanese islands for the evaluation of earthquake potentialHiroshi Sato Abstract
09:15 - 09:30 SCG59-02Deep crustal and uppermost mantle lithology of the Honshu arcMasahiro Ishikawa Abstract
09:30 - 09:45 SCG59-03Crustal seismogenic layer beneath Japanese Islands estimated from high resolved hypocenter catalog and heat flux dataTomoko Elizabeth Yano Abstract
09:45 - 10:00 SCG59-04Detailed structures of the subducted Philippine Sea plate and the overriding SW Japan arc – New findings from reinterpretation of previously obtained seismic data with modern processing techniques-Takaya Iwasaki Abstract
10:00 - 10:15 SCG59-05Crustal structure in the margin of the northern Japan Sea back-arc basin off NW Hokkaido deduced from the seismic surveyTakeshi Sato Abstract
10:15 - 10:30 SCG59-06Active Tectonics of the frontal Hidaka fold-and-thrust belt in the Ishikari foreland basin based on deep to shallow seismic reflection profiling, Hokkaido, JapanTatsuya Ishiyama Abstract
Oral Presentation May 22 AM2
10:45 - 11:00 SCG59-07Kanto Syntaxis: when did it start to form?Hiroyuki Hoshi Abstract
11:00 - 11:15 SCG59-08Local stress map in and around Kanto districtKazutoshi Imanishi Abstract
11:15 - 11:30 SCG59-09Saptio-temporal extent of a Cretaceous forearc basin and re-shaping of an arc-trench system: a case for the Izumi Group in JapanYukio Isozaki Abstract
11:30 - 11:45 SCG59-10Lower lomit of seismogenic zone beneath Kinki region based on hyopocenter catalog determined with 3D velocity structureMakoto MATSUBARA Abstract
11:45 - 12:00 SCG59-11Structural evolution of the southern Sea of Japan and implications for Cenozoic plate interaction around JapanJohan S. Claringbould Abstract
12:00 - 12:15 SCG59-12Transition tectonics between the Southwest Japan and Ryukyu arcs appeared in crustal deformation fieldsAkinori Hashima Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 22 Core Time
SCG59-P01 Scattered wavefield imaging of the Japan subduction structure using Hi-net array data Younghee Kim Abstract
SCG59-P02 Spatial distribution of reflection intensity on the upper surface of the Philippine Sea Plate, off the Boso Peninsula, Japan Akihiro Kono Abstract
SCG59-P03 Dating detrital zircons of unidentified pre-Cenozoic sandstones on both sides of the Median Tectonic Line in the Mikawa-ohno area, in central Japan: their omparison and the initiation age of the age of the low-angle MTL Ryo Hasegawa Abstract
SCG59-P04 The Lower Cretaceous groups in the Khabarovsk Krai, Far East Russia: Detrital-zircon-age spectra and tectonics Shigeru Otoh Abstract
SCG59-P05 High-resolution seismic reflection profiles in the Ishikari low land, Hokkaido, Northern Japan Naoko Kato Abstract
SCG59-P06 2017 Deep seismic reflection profiling across the western part of the Hidaka collision zone and Ishikari foreland basin, Hokkaido, Japan Hiroshi Sato Abstract
SCG59-P07 Subsidence in an inverted failed rift basin, Niigata Basin, northern Honshu, Japan Tijn Jelle Nederstigt Abstract
SCG59-P08 Subduction structure around the Amami Plateau in the northern Ryukyu island-arc trench system Ayako Nakanishi Abstract