| Short title | Geofluids & dynamics in  subduction zone | 
	
		| Oral presentation Date/Room/Chair
 | May 22 PM2 (16:15 - 18:00) | 104 | Atsushi Okamoto 
			/ Ikuo Katayama | 
	
		| May 23 AM1 (09:00 - 10:45) | 104 | Ikuo Katayama 
			/ Tatsuhiko Kawamoto | 
	
		| May 23 AM2 (11:00 - 12:45) | 104 | Tatsuhiko Kawamoto 
			/ Atsushi Okamoto | 
	
		| Poster presentation Date/Room
 | May 22 (Core Time 18:15 - 19:30) | Convention Hall | 
	
		| Contact | Atsushi Okamoto | 
	
		| Email | okamoto@mail.kankyo.tohoku.ac.jp | 
	
		| Convener | Atsushi Okamoto 
			/ Tatsuhiko Kawamoto 
			/ Ikuo Katayama | 
	
		| Scope | Fluids from subducting slabs trigger earthquakes and low frequency tremors, and return back as springs in fore-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 | We would like to ask a favor to show the title and the authors of your presentation in your first slide. PC/Mac will be available on cite. Your own PC/Mac can be used. Please come to
the session in time for checking the file/computer communication. Your
active participation will be most welcome.
You can put your poster for a whole day, and the poster core time is set from 18:15 to 19:30. | 
	
		| Time | Presentation No | Title | Author | Presenter | Abstract | 
	
		| Oral Presentation   May 22 PM2 (16:15-18:00) 104                              to the top | 
	
		| 16:15 - 16:30 | SCG63-01 | An interpretation of dehydration process in the subduction zone beneath Kyushu Island, Northwestern Japan | Shun Handa Maki Hata
 Dapeng Zhao
 other
 | Masahiro Ichiki | English | 
	
		| 16:30 - 16:45 | SCG63-02 | Slab-fluids: saline fluids in fore arc regions and supercritical fluids under volcanic arcs | Tatsuhiko Kawamoto yoshitaka kumagai
 | Tatsuhiko Kawamoto | English | 
	
		| 16:45 - 17:00 | SCG63-03 | The maximum depth of the hydrothermal-convection zone in the crust controlled by the precipitation of silica minerals | Hanae Saishu Atsushi Okamoto
 Noriyoshi Tsuchiya
 | Hanae Saishu | English | 
	
		| 17:00 - 17:15 | Invited SCG63-04
 | Clay mineral characteristics of the plate-boundary fault at the Japan Trench | Jun Kameda Kohtaro Ujiie
 Takehiro Hirose
 other
 | Jun Kameda | English | 
	
		| 17:15 - 17:30 | SCG63-05 | Relationship of intra-plate earthquake and dehydrated fluid -Example of the analysis of serpentinite body in Mt.Shiraga- | Seiya Fukumura Kazuaki Okamoto
 | Seiya Fukumura | English | 
	
		| 17:30 - 17:45 | 3-min talk in an oral session@(SCG63-P01/SCG63-P02/SCG63-P03/SCG63-P05/SCG63-P06) | 
	
		| 17:45 - 18:00 | 3-min talk in an oral session@(SCG63-P08/SCG63-P09/SCG63-P10/SCG63-P11/SCG63-P12) | 
	
		| Oral Presentation   May 23 AM1 (09:00-10:45) 104                              to the top | 
	
		| 09:00 - 09:30 | Invited SCG63-06
 | Influence of dehydration to Cl isotopic fractionations: implication for behavior of hydrophilic Cl during subduction | Masaaki Musashi | Masaaki Musashi | English | 
	
		| 09:30 - 09:45 | SCG63-07 | A numerical simulation of brine-rock interaction | Yuika Morita Kenichi Hoshino
 | Yuika Morita | English | 
	
		| 09:45 - 10:00 | SCG63-08 | Coupling of serpentinization reactions and silica diffusion | Atsushi Okamoto Yuichi Ogasawara
 Oyanagi Ryosuke
 other
 | Atsushi Okamoto | English | 
	
		| 10:00 - 10:15 | Invited SCG63-09
 | Influence of Si-metasomatism on slab-mantle interface rheology | Ken-ichi Hirauchi Sabine den Hartog
 Christopher Spiers
 | Ken-ichi Hirauchi | English | 
	
		| 10:15 - 10:30 | SCG63-10 | Geochemical variations in the Sangihe arc:  Fluid and melt slab fluxes in response to slab temperature | Takeshi Hanyu James B. Gill
 Yoshiyuki Tatsumi
 other
 | Takeshi Hanyu | English | 
	
		| 10:30 - 10:45 | SCG63-11 | Lateral variation of trace element of volcanic rocks from East Java, Sunda arc: estimation of slab fluid contributions | Esti Handini Toshiaki Hasenaka
 Haryo Edi Wibowo
 other
 | Esti Handini | English | 
	
		| Oral Presentation   May 23 AM2 (11:00-12:45) 104                              to the top | 
	
		| 11:00 - 11:15 | SCG63-12 | Electrical Conductivity of Highly Concentrated Salt Solution at Elevated Temperature and Pressure | Hiroshi Sakuma Masahiro Ichiki
 Katsuyuki KAWAMURA
 other
 | Hiroshi Sakuma | English | 
	
		| 11:15 - 11:30 | SCG63-13 | 3-D Channeling Flow through Rock Fracture Networks in Field-scale | Takuya Ishibashi Noriaki Watanabe
 Keisuke Sakurai
 other
 | Takuya Ishibashi | English | 
	
		| 11:30 - 11:45 | SCG63-14 | Fluid fraction dependence of elastic wave velocity and electrical conductivity of a water-saturated rock | Akiyoshi Higuchi Tohru Watanabe
 | Akiyoshi Higuchi | English | 
	
		| 11:45 - 12:00 | SCG63-15 | Sedimentary pore fluid-like halogens and noble gases in mantle peridotites from the Western-Pacific subduction zones | Masahiro Kobayashi Hirochika Sumino
 Takehiko Saito
 other
 | Masahiro Kobayashi | English | 
	
		| 12:00 - 12:15 | SCG63-16 | Slab-mantle coupling condition beneath northeastern Japan estimated from distribution of serpentinite | Kazuhiko Ishii | Kazuhiko Ishii | English | 
	
		| 12:15 - 12:30 | SCG63-17 | Intermediate-depth earthquakes: Role of geofluids and stresses | Junichi Nakajima Keisuke Yoshida
 Akira Hasegawa
 | Junichi Nakajima | English | 
	
		| Presentation No | Title | Author | Presenter | Abstract | 
	
		| Poster Presentation   May 22  Core Time (18:15-19:30) Convention Hall                    to the top | 
	
		| SCG63-P01 | Spectroscopic properties of sub- and supercritical fluid(H_{2}O - (CO_{2}) - X) | Chizu Sekiguchi Nobuo Hirano
 Atsushi Okamoto
 other
 | Chizu Sekiguchi | English | 
	
		| Invited SCG63-P02
 | Development of solubility measurement technique of rare earth element (Ce) in super critical aqueous fluids | Takeyasu Abe NAKAMURA, Michihiko
 SASAKI, Osamu
 other
 | Takeyasu Abe | English | 
	
		| SCG63-P03 | Evolution of aperture distribution and permeability change during fracture sealing by silica minerals | Ryo Yamada Atsushi Okamoto
 Hanae Saishu
 other
 | Ryo Yamada | English | 
	
		| SCG63-P04 | Distribution of C-H-O fluids deduced from fluid inclusions from the Shimanto belt in the Muroto area,SW Japan | Michimasa Musha Noriyoshi Tsuchiya
 Atsushi Okamoto
 | Michimasa Musha | English | 
	
		| SCG63-P05 | In-situ observation of dehydration and incongruent dissolution of antigorite into aqueous fluids | Ryo Nishizaki Tatsuhiko Kawamoto
 | Ryo Nishizaki | English | 
	
		| SCG63-P06 | In situ X-ray diffraction analysis of the experimental dehydration of chlorite at high pressure | Hideki Suenami Toru Inoue
 | Hideki Suenami | English | 
	
		| SCG63-P07 | Elastic-wave velocity of serpentinites under high pore-fluid pressure | Yuya Harada Ikuo Katayama
 Yoshio Kono
 | Ikuo Katayama | English | 
	
		| SCG63-P08 | Dihedral angle of garnet-H2O fluid in eclogite: Implication for low S-wave velocity regions at lowermost upper mantle | Mika Hashimoto Kyoko N. Matsukage
 | Mika Hashimoto | English | 
	
		| SCG63-P09 | Determination of the reaction boundary MgCO_{3} + SiO_{2} = MgSiO_{3} + CO_{3} in the upper mantle conditions | Sho Kakizawa Toru Inoue
 Akihiro Yamada
 other
 | Sho Kakizawa | English | 
	
		| SCG63-P10 | Development of "Geofluid Map" in the Naruko district, NE Japan | Takashi Hoshide Michihiko Nakamura
 | Takashi Hoshide | English | 
	
		| SCG63-P11 | Water distribution in the upper mantle beneath Kyushu, Japan, as derived from receiver function analyses | Yuki Abe Takahiro Ohkura
 Kazuro Hirahara
 other
 | Yuki Abe | English | 
	
		| SCG63-P12 | Detectability of crustal change accompanied with shallower slow earthquakes | Keisuke Ariyoshi Ryoko Nakata
 Toru Matsuzawa
 other
 | Keisuke Ariyoshi | English |