JpGU Meeting 2019
Session outline| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Complex & General(CG) | |
| Session ID | S-CG50 | |
| Title | Intraslab and intraplate earthquakes | |
| Short Title | Intraslab and intraplate earthquakes | |
| Main Convener | Name | Saeko Kita |
| Affiliation | International Institute of Seismology and Earthquake Engineering, BRI | |
| Co-Convener 1 | Name | Tomohiro Ohuchi |
| Affiliation | Geodynamics Research Center, Ehime University | |
| Co-Convener 2 | Name | Marcel Thielmann |
| Affiliation | Bavarian Geoinstitute, University of Bayreuth | |
| Co-Convener 3 | Name | Ryo Okuwaki |
| Affiliation | Graduate School of Life and Environmental Sciences, University of Tsukuba | |
| Session Language | E | |
| Scope | The purpose of this session is to share recent advances of geo-scientifical studies for intraslab and shallow-depth intraplate earthquakes. We seek to formulate future directions of the interdisciplinary study of the occurrence of intermediate-depth and deep earthquakes from the viewpoint of seismology, geodynamics and mineral physics. We welcome presentations from a wide variety of scientific disciplines, including seismology, seismotectonics, geodynamics, mineral and rock physics, other geophysics, geology, and numerical modeling. | |
| Presentation Format | Oral and Poster presentation | |
| Joint Session with | AGU,EGU,AOGS | |
| Invited Authors | Wasja Bloch (GeoForschungszentrum Potsdam) Julien Gasc (CNRS - ENS) Marina Manea (Computational Geodynamics Laboratory, Geosciences Center, National Autonomous University of Mexico) Atsushi Nakao (Earthquake Research Institute, University of Tokyo) Hitoshi Kawakatsu (Earthquake Research Institute, University of Tokyo) | |
| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 30 AM1 | ||||
| 09:00 - 09:15 | SCG50-01 | On a reversely-dipping low-velocity layer in the Tohoku-slab beneath the forearc: unbending induced fluid pathway? | Hitoshi Kawakatsu | |
| 09:15 - 09:30 | SCG50-02 | Evidence for transient fluid pathways in the mantle of the subducting Nazca slab from seismological observations and modeling of the Poisson's ratio | Wasja Bloch | |
| 09:30 - 09:45 | SCG50-03 | Numerical simulation of water transportation along subducting slabs and implications for intraslab earthquakes | Atsushi Nakao | |
| 09:45 - 10:00 | SCG50-04 | Subduction of serpentinized fracture zone and intraslab earthquakes in southern Mexico | Marina Manea | |
| 10:00 - 10:15 | SCG50-05 | Reaction-induced embrittlement of the lower continental crust | Alexandre Schubnel | |
| 10:15 - 10:30 | SCG50-06 | Transformation-induced, melt-enhanced faulting in orthoenstatite: implications for global intermediate-depth earthquakes | Yanbin Wang | |
| Oral Presentation May 30 AM2 | ||||
| 10:45 - 11:00 | SCG50-07 | The Isolated M7.9 Deep Earthquake of 30 May 2015 Under the Present Bonin Wadati-Benioff Zone: Evidence from the New ISC-EHB Earthquake Catalogue (1930-2015) and CMT Focal Mechanisms | Stephen Kirby | |
| 11:00 - 11:15 | SCG50-08 | What Can Mw –4 Lab-Quakes Teach Us About Deep-Focus Earthquakes? | Julien Gasc | |
| 11:15 - 11:30 | SCG50-09 | Deep intraslab earthquake rupture due to grain size assisted thermal runaway | Marcel Thielmann | |
| 11:30 - 11:45 | SCG50-10 | Fault model of the 2012 off-Miyagi intraslab earthquake doublet and its implication for rheological signature of incoming Pacific plate | Tatsuya Kubota | |
| 11:45 - 12:00 | SCG50-11 | Source-rupture process of the intraplate earthquake; its diversity related to the fault geometry and damaged fault zone | Ryo Okuwaki | |
| 12:00 - 12:15 | SCG50-12 | Aftershocks of the NEXT Cascadia Intraslab Earthquake | Paul Bodin | |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 30 PM2 | |||
| SCG50-P01 | Changes in seismicity rate, stress orientations, and b-values before and after ETS events in the Philippine sea plate under Kii Peninsula | Saeko Kita | |
| SCG50-P02 | Inhomogeneous conduit across slab controlled by intraslab stress heterogeneity in the Nankai subduction zone | Makoto Otsubo | |
| SCG50-P03 | New insights into the mechanism of deep-focus earthquakes | Ayako Tsuchiyama | |
| SCG50-P04 | Faulting in deforming harzburgite under wet conditions | Tomohiro Ohuchi | |
| SCG50-P05 | Semi-brittle behavior of olivine single crystals under the conditions of Earth’s mantle transition zone | Tomohiro Ohuchi | |
| SCG50-P06 | High-pressure deformation experiments on peridotite gouges under hydrothermal conditions, using a deformation-DIA apparatus | Maki Semba | |
| SCG50-P07 | Stable fault slip in antigorite-olivine aggregates at high pressures | Tomoaki Kubo | |
| SCG50-P08 | Rheology and frictional instability of lawsonite in high pressure deformation experiments | Rei Shiraishi | |
| SCG50-P09 | Grain Size Dependency of Olivine-Spinel Phase Transformational Mechanism Responsible for Deep-focus Earthquakes | Sando Sawa | |
| SCG50-P10 | Seismicity and mineral destabilizations in the subducting mantle up to 6 GPa, 200 km depth | Thomas P. Ferrand | |
| SCG50-P11 | Receiver function imaging of subducting Pacific plate and mantle wedge under Japanese islands using denser network of stations | HyeJeong Kim | |
| SCG50-P12 | Strong S-wave attenuation in the mantle wedge beneath the NE Japan and interpretations of high-frequency wave propagation path of intraslab earthquakes | Takahiro Shiina | |