Solid Earth Sciences(S)
Session Sub-categoryComplex & General
Session IDS-CG52
TitleIntraslab and intraplate earthquakes
Short TitleIntraslab and intraplate earthquakes
Main ConvenerNameSaeko Kita
AffiliationDepartment of Earth and Planetary Systems Science, Hiroshima University
Co-Convener 1NameTomohiro Ohuchi
AffiliationGeodynamics Research Center, Ehime University
Co-Convener 2NameThomas P. Ferrand
AffiliationEarthquake Research Institute
Co-Convener 3NameKeishi Okazaki
AffiliationJapan Agency for Marine-Earth Science and Technology
Session LanguageEE
ScopeThe purpose of this session is to share recent advances of geo-scientifical studies for intraslab (intraplate) earthquakes. We seek to formulate future directions of the interdisciplinary study of the occurrence of intermediate-depth intraslab 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. Studies for outer-rise earthquakes, shallow-depth intraplate earthquakes and deep earthquakes are also welcomed because it is important to know the characteristics of shallow-depth intraslab earthquakes and deep earthquakes for understanding for the generation process of intermediate-depth intraslab earthquakes.
Presentation FormatOral and Poster presentation
Joint Session withAGU, EGU
Invited Authors
  • Ryo Okuwaki (Graduate School of Life and Environmental Sciences, University of Tsukuba)
  • AurĂ©lien Nicolas (ENS Paris)
  • Marcel Thielmann (Bavarian Research Institute of Experimental Geochemistry and Geophysics, University of Bayreuth, Bayreuth, Germany)
  • Manabu Morishige (Japan Agency for Marine-Earth Science and Technology)
Time Presentation No Title Presenter Abstract
Oral Presentation May 22 AM1
09:00 - 09:15 SCG52-01Non-flexure Off-Trench Intraplate Earthquakes in Subduction Zones: Expressions of Nonuniformity of Slip History along Megathrust Subduction Boundaries and an Example from AlaskaStephen Kirby Abstract
09:15 - 09:30 SCG52-02Shallow intraslab normal faulting: Rupture process of the Mw 8.1 2017 Chiapas Mexico earthquakeRyo Okuwaki Abstract
09:30 - 09:45 SCG52-03Dehydration-driven stress transfer: from the lab to the fieldThomas Pascal Ferrand Abstract
09:45 - 10:00 SCG52-04Dehydration-driven stress transfer evidenced beneath Tohoku and Hokkiado, NE JapanSaeko Kita Abstract
10:00 - 10:15 SCG52-05Source Parameter Variability of Intermediate-Depth Earthquakes in Japan Estimated from Empirical Green's FunctionsShanna Chu Abstract
10:15 - 10:30 SCG52-06Faulting in deforming dunite under wet conditions: role of aqueous fluid in semi-brittle behavior of duniteTomohiro Ohuchi Abstract
Oral Presentation May 22 AM2
10:45 - 11:00 SCG52-07Mechanical behavior of limestone undergoing brittle-ductile transition: experiments and modelAurélien Nicolas Abstract
11:00 - 11:15 SCG52-08Intermediate depth earthquakes due to grain size assisted thermal runaway: What are the odds?Marcel Thielmann Abstract
11:15 - 11:30 SCG52-09High-frequency later phases for intraslab earthquakes and attenuation in the mantle wedge beneath northeastern JapanTakahiro Shiina Abstract
11:30 - 11:45 SCG52-10Migration of aqueous fluid in a subducting slab with implications for intermediate-depth seismicityManabu Morishige Abstract
11:45 - 12:00 SCG52-11Isolated intermediate-depth seismicity: Implications for local slab hydration Junichi Nakajima Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 22 Core Time
SCG52-P01 Deformation of quartz single crystals under the coesite-stable conditions Tomohiro Ohuchi Abstract
SCG52-P02 Waveform Similarity of Deep Earthquakes in the Subducting Pacific Slab Beneath Japan Ayako Tsuchiyama Abstract
SCG52-P03 Widespread changes in deep intraslab seismicity along the Tonga trench Yuta Mitsui Abstract
SCG52-P04 The genesis of seismic clusters in the subducting oceanic crust Yusuke Usui Abstract
SCG52-P05 Spatial distribution and b-values of earthquakes beneath Kii Peninsula, southwestern Japan Saeko Kita Abstract