JpGU Meeting 2025
Session Outline| Solid Earth Sciences (S) | ||||
|---|---|---|---|---|
| Session Sub-category | Complex & General (CG) | |||
| Session ID | S-CG52 | |||
| Session Title | Inter-segment Tectonics: Interdisciplinary Research on Responses to Plate Subduction | |||
| Short Title | Inter-segment Tectonics | |||
| Date & Time | Oral Session |
AM1-AM2 Sun, 25 MAY | ||
| On-site Poster Coretime |
PM3 Sun. 25 MAY | |||
| Main Convener | Name | Kimihiro Mochizuki | ||
| Affiliation | Earthquake Prediction Research Center, Earthquake Research Institute, University of Tokyo | |||
| Co-Convener 1 | Name | Claudia Maria Adam | ||
| Affiliation | Kansas State University | |||
| Co-Convener 2 | Name | Dan Bassett | ||
| Affiliation | GNS Science | |||
| Co-Convener 3 | Name | Ryosuke Ando | ||
| Affiliation | Graduate School of Science, University of Tokyo | |||
| Session Language | E | |||
| Scope (Session Description) |
During the 2011 Tohoku Earthquake off the Pacific coast, multiple earthquake fault segments along the Japan Trench triggered a massive M9 earthquake. Similar cases, where multiple segments of a subduction zone interact to cause a large earthquake, are known in many subduction zones worldwide. When observing the distribution of volcanic alignments and topography from offshore to onshore regions, in addition to earthquake fault segments in subduction zones, a notable correlation can be identified. This suggests that the responses to plate subduction, ranging across time scales from earthquake cycles to the formation of topography, may be understood in a unified manner as part of the subduction system. Achieving this unified understanding requires interdisciplinary approaches, covering areas such as seismology, volcanology, geomorphology, and geology. This session focuses on the correlation between earthquake fault segments, volcanic alignments, and topography from offshore to onshore regions along subduction zones. We welcome presentations on research that explores the factors responsible for the formation of these correlated segments and the interactions between segments. |
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| Session Format | Orals and Posters session | |||
| Co-sponsorship | Partner Union(s) | - | ||
| JpGU Society Member(s) | - | |||
| International Collaborative Society | - | |||
| Organizations Other Than JpGU Society Members | - | |||
| Time | Presentation No | Title | Presenter |
|---|---|---|---|
| Oral Presentation May 25 AM1 | |||
| 9:00 - 9:15 | SCG52-01 | Inter-segment Tectonics in Subduction Zones: Linking Earthquakes, Volcanoes, and Geomorphology | Kimihiro Mochizuki |
| 9:15 - 9:30 | SCG52-02 | Correlation between subduction of linear oceanic features and arc volcanism volume around the Pacific basin | Claudia Maria Adam |
| 9:30 - 9:45 | SCG52-03 | Influence of subducting fracture zones on arc volcanism | Valerie Vidal |
| 9:45 - 10:00 | SCG52-04 | Forearc segmentation: an example of the Tonankai-Tokai regions in the Nankai Trough from new seismic reflection data set | Gaku Kimura |
| 10:00 - 10:15 | SCG52-05 | Geometrical dependence of seamount subduction on slip tendency: Does it promote or prohibit locking? | Masataka Kinoshita |
| 10:15 - 10:30 | SCG52-06 | Subduction of the Philippine Sea plate constrained by middle to late Miocene trench-proximal magmatism in southwest Japan | Hironao Shinjoe |
| Oral Presentation May 25 AM2 | |||
| 10:45 - 11:00 | SCG52-07 | Geodetic and seismic insights into seismogenic features and fault segmentation along the southern Ryukyu Trench | YA-JU HSU |
| 11:00 - 11:15 | SCG52-08 | Integrated 3D P-wave Tomography Reveals Forearc Structure of the Central NE Japan Subduction Zone | Brook Tozer |
| 11:15 - 11:30 | SCG52-09 | Crustal Structure of the Hikurangi Subduction Zone Revealed by Four Decades of Onshore-Offshore Seismic Data | Dan Bassett |
| 11:30 - 11:45 | SCG52-10 | Geometry, tectonics and earthquakes at the southern termination of the Hikurangi subduction margin | Andy Nicol |
| 11:45 - 12:00 | SCG52-11 | Geochemical and isotope constraints on post 1 Ma Yakutat slab tear magmatism in south-central Alaska (USA): the Maclaren River volcanic field and demise of the Wrangell Arc. | Matthew E Brueseke |
| 12:00 - 12:15 | SCG52-12 | Mechanism of Upper-plate Deformations Controlled by the Geometry of Subduction Plate Interfaces | Ryosuke Ando |
| Presentation No | Title | Presenter |
|---|---|---|
| Poster Presentation May 25 PM3 | ||
| SCG52-P01 | Monitoring of plate coupling along the Nankai Trough using seafloor observation networks: A case of the 2024 Hyuga-nada Earthquake | Keisuke Ariyoshi |
| SCG52-P02 | Geodetically estimated Nankai asperities below oceanic basins bordered with slow earthquakes | Daisuke Sato |
| SCG52-P03 | Pore pressure estimation in Nankai Trough using full waveform inversion of ocean-bottom seismometer data | Paul Caesar Mason Flores |
| SCG52-P04 | Three-dimensional resistivity structure beneath the Chugoku and Shikoku districts in Southwestern Japan using Network-Magnetotelluric method | Yujie SHI |
| SCG52-P05 | Comparison of Resistivity Heterogeneity in Subduction Zones to Clarify the Formation Mechanism of Island Arc Volcanoes | Maki Hata |
| SCG52-P06 | Monitoring the electrical features of the overlying plate in the Northern Hikurangi subduction zone, New Zealand, using ocean bottom electromagnetometers | Kiyoshi Baba |
| SCG52-P07 | Classification of the April 3rd, 2024 Mw 7.4 Hualien, Taiwan, Aftershock Sequence Using Waveform Cross-Correlation | Hsuan-Ching Hung |
| SCG52-P08 | Sesimic Velocity Structure Beneath Sulawesi Island, Indonesia | Ahmad Mustafid Miftahul Huda |