Japanese

Solid Earth Sciences (S)
Session Sub-categoryCG
Session IDS-CG46
Title Shallow and intermediate depth intraslab earthquakes: seismogenesis and rheology of the slab
Short Title Intraslab earthquakes
Date & Time
Oral
session		 AM1, AM2 Wed, 24 MAY
On-site
poster
coretime		 PM3 Wed, 24 MAY
Online
Poster
session		 PM1 Tuesday, 23 MAY
Main ConvenerName Tomohiro Ohuchi
Affiliation Geodynamics Research Center, Ehime University
Co-Convener 1Name Saeko Kita
Affiliation International Institute of Seismology and Earthquake Engineering, BRI
Co-Convener 2Name Marina Manea
Affiliation Computational Geodynamics Laboratory, Geosciences Center, National Autonomous University of Mexico
Co-Convener 3Name Kurama Okubo
Affiliation National Research Institute for Earth Science and Disaster Resilience
Session Language E
Scope At depths exceeding 30 km, where the pressure reaches >1 GPa, many regular earthquakes and slow slip events occur within/above subducting slabs. It remains to be fully revealed that the intraslab earthquakes at such high pressures are described with frictional processes commonly used to model crustal earthquakes. It has long been believed that breakdown of hydrous minerals and pressure-induced phase transitions of major minerals could trigger intraslab earthquakes. Aqueous fluid released from the hydrous minerals seem to be related with slow slip events and some earthquakes. However, our understanding of the link between such microscopic phenomena and macroscopic earthquakes is still poor. The purpose of this session is to share constraints and advances in the understanding of the mechanisms controlling the occurrence of intraslab earthquakes. We seek to formulate future directions of the interdisciplinary study of the occurrence of intraslab earthquakes from the viewpoint of seismology, geodynamics and mineral physics. We welcome presentations from a wide variety of scientific disciplines, including observational and theoretical seismology, seismotectonics, geodynamics, mineral and rock physics, geology, and numerical modeling. Studies related to the thermal and tectonic structures of the subducting slab are also welcomed.
Presentation Format Oral and Poster
Collaboration Joint with -
Co-sponsoring
Society		 -