Outline of Session

   

Solid Earth Sciences(S) / Complex & General(CG)
S-CG60 Geofluids and dynamics in subduction zones


Short title Geofluids & dynamics in subduction zone
Oral presentation
Date/Room/Chair
May 25 AM2 (11:00 - 12:45) 201A Ikuo Katayama 
May 25 PM1 (14:15 - 16:00) 201A Tatsuhiko Kawamoto 
May 25 PM2 (16:15 - 18:00) 201A Atsushi Okamoto 
Poster presentation
Date/Room
May 25 (Core Time 18:15 - 19:30) Convention Hall
Contact Ikuo Katayama
Email katayama@hiroshima-u.ac.jp
Convener Ikuo Katayama  / Atsushi Okamoto  / Tatsuhiko Kawamoto 
Scope 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.
Notes  


Time Presentation No Title Author Presenter Abstract
Oral Presentation   May 25 AM2 (11:00-12:45) 201A                              to the top
11:00 - 11:15 SCG60-01 Thermal structure and melt fraction distribution of mantle from a 3-D electrical conductivity structure beneath Kyushu HATA, Maki
UYESHIMA, Makoto
HATA, Maki
11:15 - 11:30 SCG60-02 Subduction Initiation and spatial and temporal variation of magma generating condition in the Miocene SW Japan MORISATO, Fumitoshi
OZAWA, Kazuhito
MORISATO, Fumitoshi
11:30 - 11:45 SCG60-03 Development of a 3D thermal structure in the subduction zone due to a low viscosity layer at the plate interface MORISHIGE, Manabu MORISHIGE, Manabu
11:45 - 12:00 SCG60-04 S-wave ray path analysis constrains the distribution and dynamics of the hydrated mantle wedge NAGAYA, Takayoshi
WALLIS, Simon
WALKER, Andrew
other
NAGAYA, Takayoshi
12:00 - 12:15 SCG60-05 The mantle anisotropy obtained from shear-wave splitting in the region of 1891 Nobi earthquake IIDAKA, Takashi
HIRAMATSU, Yoshihiro
THE RESEARCH GROUP FOR THE JOINT SEISMIC, Observations at the nobi area
IIDAKA, Takashi
12:15 - 12:30 SCG60-06 Reconsideration of serpentinite in the shallow wedge mantle -Importance of brucite- KAWAHARA, Hirokazu
ENDO, Shunsuke
WALLIS, Simon
other
KAWAHARA, Hirokazu
12:30 - 12:45 Invited
SCG60-07
Brittle-ductile transition of serpentinites in subduction zones: Roles of pore fluid pressure SHIMIZU, Ichiko SHIMIZU, Ichiko
Oral Presentation   May 25 PM1 (14:15-16:00) 201A                              to the top
14:15 - 14:30 SCG60-08 Streak process due to irregular slab topography and the classification of subduction zones EGUCHI, Takao EGUCHI, Takao
14:30 - 14:45 SCG60-09 Split of the Philippine Sea plate and non-volcanic seismic swarm in Wakayama district, SW Japan KATO, Aitaro
IWASAKI, Takaya
KATO, Aitaro
14:45 - 15:00 SCG60-10 Insight into earthquake generation from evolution of pore fluid pressures in a stimulated geothermal reservoir TERAKAWA, Toshiko
DEICHMANN, Nicholas
TERAKAWA, Toshiko
15:00 - 15:15 SCG60-11 Characteristics of slab-derived fluids beneath Kii Peninsula inferred from seismic traveltime tomography SHIBUTANI, Takuo
HIRAHARA, Kazuro
SHIBUTANI, Takuo
15:15 - 15:30 Invited
SCG60-12
Coseismic fluid-rock interactions in subduction-zone faults: Constraints from geochemical analyses of fault rocks ISHIKAWA, Tsuyoshi ISHIKAWA, Tsuyoshi
15:30 - 15:45 SCG60-13 Effect of swelling cray minerals on permeability and occurrence condition of abnormal pore pressure KAKU, Nahomi
KATAYAMA, Ikuo
KAKU, Nahomi
15:45 - 16:00 SCG60-14 Fracture sealing and permeability change induced by silica dissolution and precipitation OKAMOTO, Atsushi
YAMADA, Ryo
TANAKA, Hiroto
other
OKAMOTO, Atsushi
Oral Presentation   May 25 PM2 (16:15-18:00) 201A                              to the top
16:15 - 16:30 SCG60-15 Experimental study on the hydration rate of peridotites at forearc mantle wedge conditions NAKATANI, Takayuki
NAKAMURA, Michihiko
NAKATANI, Takayuki
16:30 - 16:45 SCG60-16 Hydrothermal experiments on the metasomatic reactions at crust-mantle boundary. OYANAGI, Ryosuke
OKAMOTO, Atsushi
TSUCHIYA, Noriyoshi
OYANAGI, Ryosuke
16:45 - 17:00 SCG60-17 Hydrogen and oxygen isotope of glaucophane in lawsonite eclogites preserving pillow structure MASUYAMA, Yuya
HAMABATA, Daichi
TOMIYASU, Fumiya
other
OKAMOTO, Kazuaki
17:00 - 17:15 SCG60-18 Structure and physico-chemical properties of interfacial water on a quartz revealed by molecular dynamics simulation ISHIKAWA, Satoru
SAKUMA, Hiroshi
TSUCHIYA, Noriyoshi
ISHIKAWA, Satoru
17:15 - 17:30 3-min talk in an oral session (SCG60-P01/SCG60-P05/SCG60-P07)
17:30 - 17:45 Discussion


Presentation No Title Author Presenter Abstract
Poster Presentation   May 25  Core Time (18:15-19:30) Convention Hall                    to the top
SCG60-P01 Seismic attenuation in the Pacific slab beneath northeast Japan SHIINA, Takahiro
NAKAJIMA, Junichi
SHIINA, Takahiro
SCG60-P02 3-D P-wave anisotropy tomography of the crust and upper mantle beneath Hokkaido TORIMOTO, Tatsuya
ZHAO, Dapeng
TOYOKUNI, Genti
other
TORIMOTO, Tatsuya
SCG60-P03 P and S wave attenuation tomography of the Southwest Japan arc LIU, Xin
ZHAO, Dapeng
NISHIZONO, Yukihisa
other
ZHAO, Dapeng
SCG60-P04 Geofluid migration process inferred from a 3-D electrical conductivity model beneath Tohoku district. ICHIKI, Masahiro
OGAWA, Yasuo
KAIDA, Toshiki
other
ICHIKI, Masahiro
SCG60-P05 Fluid-rock interaction in deep portions of subduction plate boundaries SAITO, Tsubasa
UJIIE, Kohtaro
SAITO, Tsubasa
SCG60-P06 Mechanism of overpressure development in the Kazusa Group MARUMO, Haruna
KANEKO, Sachiyo
TAMURA, Yukie
other
UEHARA, Shin-ichi
SCG60-P07 Dehydration effect on frictional instability: Experimental study using gypsum hemihydrate SASAKI, Yuto
MUTO, Jun
NAGAHAMA, Hiroyuki
SASAKI, Yuto
SCG60-P08 Spatial variation of magmatic temperatures and water contents in western Java Island, Indonesia: estimation from mineral TAKAYAMA, Kohei
OHBA, Tsukasa
ABDURRACHMAN, Mirzam
other
TAKAYAMA, Kohei