English

固体地球科学 (S)
セッション小記号 固体地球科学複合領域・一般 (CG)
セッション ID S-CG43
タイトル スラブ内地震とその発生メカニズム
タイトル短縮名 スラブ内地震
開催日時 口頭セッション 5/25(水) PM2
5/26(木) AM1		 現地会場
現地ポスターコアタイム 5/25(水) PM3
代表コンビーナ 氏名 北 佐枝子
所属 建築研究所
共同コンビーナ 1 氏名 大内 智博
所属 愛媛大学地球深部ダイナミクス研究センター
共同コンビーナ 2 氏名 Marina Manea
所属 Computational Geodynamics Laboratory, Geosciences Center, National Autonomous University of Mexico
共同コンビーナ 3 氏名 大久保 蔵馬
所属 防災科学技術研究所
セッション言語 E
』スコープ At depths exceeding 30 km, where the pressure reaches > 1GPa, 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.
発表方法 口頭およびポスターセッション
共催情報 学協会 -
ジョイント AGU, EGU, CGU