[S-CG62_2PO1] Geofluids and dynamics in subduction zones

Fri. May 2, 2014 4:15 PM - 5:30 PM Poster (3F)

Convener:*Okamoto Atsushi(Graduate School of Environmental Studies), Tatsuhiko Kawamoto(Institute for Geothermal Sciences, Graduate School of Science, Kyoto University), Ikuo Katayama Ikuo(Department of Earth and Planetary Systems Science, Hiroshima University)

Fluids from subducting slabs trigger earthquakes and low frequency tremors, and return back as springs in for-arc regions and produce magmas beneath volcanic arcs. Geofluids can be present everywhere and migrate in subduction zones and produce spatial and temporal variations in physical and chemical properties of materials. Thus the geofluids play an important role in the subduction-zone dynamics. This interdisciplinary session aims to promote the exchange of knowledge from cutting edge studies on geofluids and give perspectives to each participant. We continue to strongly encourage young researchers to participate in this session, because understanding geofluids can be essential in many geological and geophysical processes.

4:15 PM - 5:30 PM

[SCG62-P01] Temperature dependence of seismic velocities in a antigorite serpentinite at 1 GPa

*Ryo SHIRAI¹, Tohru WATANABE¹, Akira YONEDA², Katsuyoshi MICHIBAYASHI³ (1.Deaprtment of Earth Sciences, Faculty of Science, University of Toyama, 2.Institute for Study of Earth's Interior, Okayama University, 3.Institute of Geosciences, Shizuoka University)

4:15 PM - 5:30 PM

[SCG62-P02] Detection of structured water on quartz interface by Raman-FTIR spectroscopy and its evaluation by molecular dynamics

*Satoru ISHIKAWA¹, Hiroshi SAKUMA², Noriyoshi TSUCHIYA¹ (1.Graduate School of Environmental Studies, Tohoku University, 2.National Institute for Materials Science)

4:15 PM - 5:30 PM

[SCG62-P03] Generation process of brecciated marble at Hiraodai karst, Kyushu, Japan

*Saya ISHIYAMA¹, Jun-ichi ANDO¹, Shun'ichi NAKAI², Yasuhiro OTA³, Kaushik DAS¹ (1.Department of Earth and Planetary Systems Science, Hiroshima University, 2.Earthquake Research Institute, the University of Tokyo, 3.Kitakyushu Museum of Natural history & Human history)

4:15 PM - 5:30 PM

[SCG62-P04] Equation of state of topaz-OH in the subducted sediment under high pressure and high temperature

*Mizuki NIIZATO¹, Toru INOUE², Nao CAI², Hideki SUENAMI², Sho KAKIZAWA² (1.Department of Earth Sciences, Ehime University, 2.Geodynamics Research Center, Ehime Univercity)

4:15 PM - 5:30 PM

[SCG62-P05] Water content in arc basaltic magma in northeast Japan and Izu-Mariana arc estimated from melt inclusions in olivine and

*Masashi USHIODA¹, Naoki IKEGUCHI¹, Eiichi TAKAHASHI¹ (1.Dept. Earth and Planetary Sciences, Tokyo Institute of Technology)

4:15 PM - 5:30 PM

[SCG62-P06] DEM simulation on fracturing induced by hydration and dehydration reactions

*Atsushi OKAMOTO¹, Hiroyuki SHIMIZU² (1.Graduate School of environmental Studies, Tohoku University, 2.Institute of Fluid Science, Tohoku University)

Session information

[S-CG62_2PO1] Geofluids and dynamics in subduction zones

[SCG62-P01] Temperature dependence of seismic velocities in a antigorite serpentinite at 1 GPa

[SCG62-P02] Detection of structured water on quartz interface by Raman-FTIR spectroscopy and its evaluation by molecular dynamics

[SCG62-P03] Generation process of brecciated marble at Hiraodai karst, Kyushu, Japan

[SCG62-P04] Equation of state of topaz-OH in the subducted sediment under high pressure and high temperature

[SCG62-P05] Water content in arc basaltic magma in northeast Japan and Izu-Mariana arc estimated from melt inclusions in olivine and

[SCG62-P06] DEM simulation on fracturing induced by hydration and dehydration reactions