京都大学防災研究所年報 第 62 号 A
DPRI Annuals, No. 62 A, 2019

一般研究集会 ( 課題番号 ： 30K-09 )集会名：地殻ダイナミクス国際集会 ”The Second International Symposium on Crustal Dynamics (ISCD-2)-Toward integrated view of island arc seismogenesis- ”
研究代表者：飯尾 能久
所属機関名：京都大学
所内担当者名： 飯尾 能久
開催日：平成 31 年 3 月 1 日～平成 31 年 3 月 3 日
開催場所：京都大学 宇治おうばくプラザ きはだホール
参加者数：123 名 (所外 100 名，所内 23 名)
・大学院生の参加状況：33 名（修士 18 名，博士 15 名）（内数）・大学院生の参加形態 [ ポスター発表，運営補助 ]研究及び教育への波及効果について「東北沖地震後の列島変動の統一的理解」という目的に向けて日本列島内の応力・歪の時空間変化が明らかとなり，内陸地震の予測へ向けての今後の研究の方向性が見えてきた．海外からの多数の研究者を含めた学際的なシンポジウム
は，各参加者が異分野の研究に刺激を受け新しい研究を創出出来る可能性があるほか，国際共同研究を生む場ともなりその波及効果は大きい．また，若手研究者および大学院生においては，特に海外からの第 1 線の研究者と直接議論する
ことにより大きな刺激となったほか，一定の評価を受け，自分自身の研究に自信を持つことが出来た．

研究集会報告(1)目的
本国際研究集会の目的は過去５年間行われて来た，文部科学省 新学術領域研究（平成 26〜30 年度）「地殻ダイナミクス―東北沖地震後の内陸変動の統一的理解―」について，関連する分野の第 1 線の研究者が本テーマについての最先端の研究を共有し，地殻ダイナミクスについて根本的理解を深めることである．また，次世代を担う若手研究者・大学院生に，特に海外からの第１線の研究者と議論する場を提供することである．
(2)成果のまとめ
本国際集会研究集会では，新学術領域研究の６つの計画研究（A01 応力，A02 変形，B01 構造，B02 変形実験，B03 地殻流体，C01 モデル）の各グループから５年間の研究で到達された研究成果が発表された．特に新学術領域研究の最大のテーマであった地殻の絶対応力の推定のほか，流体移動と震源移動の関係，鳥取県西部地震の地震震源域に展開されている「0.1 満点
地震観測」の成果，余震域と地質断層の対比，精細 GPS 観測から推定される地殻の変形様式，地殻と断層のレオロジー，地殻流体，各種モデリング等についての先端研究の成果を参加者が共有し，今後の新しい研究を模索することが出来た．３日間の国際研究集会では様々な分野から 14 名の海外からの研究者を含む 120 名を超える研究者・大学院生が参加し，日々活発な研究討議が行われて大変実りの多い国際研究集会となった．
(3)プログラム※別添のとおり(4)研究成果の公表「Earth, Planets, and Space」
誌において特集号「Crustal Dynamics: Toward Integrated View of Island Arc Seismogenesis」
を発行予定である（投稿締め切りは 2019 年 6 月 30 日）．

― 136 ―

International Symposium

Crustal Dynamics (ISCD-2):
Toward Integrated View of Island Arc Seismogenesis
1-3 March, 2019, Uji, Japan

Program

Oral Session
March 1st (Fri.)
9:30

Opening

9:45

A01

Stress and Strength in the Seismogenic Zones in the Japanese Islands
Toru MATSUZAWA*

10:00

A02

Earthquake Activities Induced by the 2011 Tohoku-Oki Earthquake Related to theHeterogeneities in Stress and Strength in the Tohoku District
Keisuke YOSHIDA*, Akira HASEGAWA, Takeyoshi YOSHIDA,
Toru MATSUZAWA

10:15

A03

Stress Field in the Aftershock Area of the 2016 Central Tottori Prefecture Earthquake
Yoshihisa IIO*, Satoshi MATSUMOTO, Shinichi SAKAI, Aitaro KATO

10:30

A04

Estimation of Heterogeneity of Stress Field by Using Misfit Angles in Focal Mechanisms
Yohei YUKUTAKE*, Yoshihisa IIO

10:45

A05

A Bayesian Estimation of a Focal Mechanisms Based on the Spatial Stress Pattern Inferred
From a P wave first-motion dataset
Takaki IWATA*

11:00

A06

(INVITED) Seismic Anisotropy and its Relation to Stress and Strain in the Crust
Martha SAVAGE*, Hubert ZAL, Kenny GRAHAM, Yosuke AOKI

11:30

A07

Stress and Strength Control on Complex Rupture of the 2016 Kaikoura, New Zealand
Earthquake from Seismic Observation
T. OKADA*, T. SATO, Y. IIO, S. MATSUMOTO, S. BANNISTER, J. RISTAU,
S. OHMI, M. MATSUNO, T. MIURA, M. SAVAGE, J. PETTINGA, F. GHISETTI,
R. H. SIBSON

11:45

A08

(INVITED) Thermo-mechanical Properties of the Seismogenic Crust in Southern California
Egill HAUKSSON*

12:15

A09

Modeling and Estimating the 3D Absolute Stress Field Using Earthquake Focal Mechanism
Solutions
Toshiko TERAKAWA*, Egill HAUKSSON

12:30

Discussion

12:45 ~ 13:45

Lunch― 137 ―

13:45Introduction of the session
Takeshi SAGIYA

13:55

A10

(INVITED) Lessons for Subduction Yone Earthquakes from GPS, Repeating Earthquakes, andPhysics-based Models
Paul SEGALL*, Kaj JOHNSON, Camilla CATTANIA

14:25

A11

Formation of Island Arc-Trench System due to Plate Subduction on the Basis of Elastic
Dislocation Theory
Yukitoshi FUKAHATA*, Mitsuhiro MATSU’URA

14:45

A12

Resolution of Inelastic Crustal Deformation in the Japanese Inland and its Tectonic Implications
Takeshi SAGIYA, Angela MENESES-GUTIERREZ, Xuelei ZHANG,
Koki KUMAGAI

15:05

A13

Lessons from Crustal Responses to Co- and Inter-seismic Stress Disturbances: Japan and SW
TaiwanYouichiro TAKADA, Tomomi INAMATSU, Kotaro TSUKAHARA,
Takeshi SAGIYA, Takuya NISHIMURA, Kuo-En CHING

15:25

Coffee break

15:40

A14

(INVITED) Luminescence Thermochronometry and the Evolution of Mountains, Climate andTectonics
Frédéric HERMAN, Georgina E. KING

16:10

A15

Long-term Uplift-denudation of the Japan Arc Revealed by Low-temperature
Thermochronology
Takahiro TAGAMI, Shigeru SUEOKA

16:30

Discussion

16:45 ~ 18:15

Poster Session

18:30 ~

Reception

March 2nd (Sat.)
9:10

B16

(INVITED) Fluid-triggered High-speed Deformation at Different Levels of the Continental
Crust: Evidencesfrom Paleo-earthquake Proxies
Marco HERWEGH*, Alfons BERGER

9:40

B17

Development of the Median Tectonic Line, Mie Prefecture, South-West Japan: A Possible
Interpretation for Strain Localization and Softening
Toru TAKESHITA, Dong Van BUI, Thomas CZERTOWICZ, Shun ARAI,
Takafumi YAMAMOTO*, Jun-Ichi ANDO, Norio SHIGEMATSU,
Koichiro FUJIMOTO

10:00

Introduction to two poster presentations (P19 and P20) on the studies of the Median
Tectonic Line in the eastern Kii Peninsula, SW Japan
Norio SHIGEMATSU*

10:10

B18

Fracturing of Plagioclase Grains: Roles for Deformation Mechanism and Fluid Pathway at
Lower Crust
Yusuke SODA*, Takamoto OKUDAIRA

10:25

B19

Distribution and Development Process of Faults Retrieved from Aftershock Areas of the 2000
Western Tottori Earthquake
Hideki MUKOYOSHI*, Hideto UCHIDA, Kenta KOBAYASHI, Satoshi TONAI,
Shunya KANEKI, Tetsuro HIRONO― 138 ―

10:40Coffee break

10:55

B20

Heterogeneous Seismic Activity in Focal Area of the 2000 Western Tottori EQ (M7.3) Detectedby “0.1 manten” Hyper Dense Seismic Observation
Satoshi MATSUMOTO*, Shinichi SAKAI, Aitaro KATO, Yoshihisa IIO

11:15

B21

Spatio-temporal Evolution of Micro-Earthquakes Illuminated by “0.1 manten” Hyper Dense
Seismic Observation: Implication of Fault Growth
Aitaro KATO*, Shinichi SAKAI, Satoshi MATSUMOTO, Yoshihisa IIO

11:35

B22

(INVITED) Enhancing Slip Inversions via Joint Seismo-Geodetic Approaches: Examples from
Anza and Parkfield, California
Asaf INBAL*

12:05

Discussion

12:10 ~ 13:10

Lunch

13:10

B23

Crustal Strength across the Frictional to Plastic Zones: Laboratory Data, Theories, andExtrapolation to Nature
Ichiko SHIMIZU*, B02 and Utrecht Groups, B01 MTL Research Group

13:30

B24

(INVITED) Physics of Fault Friction at low Shearing Velocities: From the Micro- to Meter
Scale
Christopher J. SPIERS*

14:00

B25

The Evolution of Fault-zone Rheology
Kiyokazu OOHASHI*, Toru TAKESHITA, Ken-ichi HIRAUCHI

14:20

B26

The Origin of Macroscopic Friction between Single Crystal Mica Surfaces
Hiroshi SAKUMA*, Kenji KAWAI, Ikuo KATAYAMA, Shigeru SUEHARA

14:40 ~ 14:50

Coffee break

14:50

B27

(INVITED) Diffusion Creep in Eclogites: Relationship Between Mineral Reactions andDeformation and Consequences for Crustal Weakening
Holger STÜNITZ*, Kai NEUFELD, Ane FINSTAD, Jiri KONOPASEK,
Renee HEILBRONNER, James MCKENZIE

15:20

B28

Rheological Weakening of the Lower Crustal Rocks Promoted by Anomalous Diffusion of
Water
Masanori KIDO*, Jun MUTO, Sanae KOIZUMI, Hiroyuki NAGAHAMA

15:40

B29

Persistent Deep Afterslip Driven by Nonlinear Transient Mantle Flow and Recovery of Coastal
Subsidence after the 2011 Tohoku Earthquake
Jun MUTO*, James D. P. MOORE, Sylvain BARBOT, Takeshi IINUMA,
Yusaku OHTA, Syunsuke HORIUCHI, Hikaru IWAMORI

16:00

Discussion

16:10 ~ 18:00

Poster session

March 3rd (Sun.)
9:10

C30

Electromagnetic Mapping of Geofluids Using Wideband Magnetotellurics: Implications for
Seismogenesis
Yasuo OGAWA*, Masahiro ICHIKI― 139 ―

9:30

C31

High Resolution Shallow Crustal Structure of the Central Japan by Using Surface-wave
Tomography
Hiro NIMIYA*, Tatsunori IKEDA, Takeshi TSUJI

9:50

C32

Fluid Distribution in the Crust – Inference from Seismic Velocity and Electrical Conductivity
Tohru WATANABE*, Guillaume DESBOIS, Kenta YOSHIDA

10:10

C33

(INVITED) Preparation Zones for Large Crustal Earthquakes as a Consequence of Fault-Valve
Activity
Richard H. SIBSON*

10:40

C34

Researches for Flux Estimation and Continuous Monitoring of Slab-Derived Fluids
Norio Matsumoto*, Kohei Kazahaya, Fumiaki Tsunomori, Noritoshi Morikawa

11:00

C35

A 3-D Crust and Uppermost Mantle Electrical Conductivity Model of Subduction Zone Beneath
NE Japan
Masahiro ICHIKI*, Toshiki KAIDA, Yasuo OGAWA

11:20

C36

Roles of Water in Subduction Zone Dynamics
Hikaru IWAMORI*, Hitomi NAKAMURA, Atsushi NAKAO,
Tatsuji, NISHIZAWA

11:40 ~ 12:40

Lunch

12:40

C37

(INVITED) Study of Potential Biases in Seismologically Estimated Stress Drops ofMicroseismicity Using Dynamically Simulated Earthquake Sources
Nadia LAPUSTA*

13:10

C38

Energy Budget of Earthquakes: Investigating the Relation Between Actual and Seismologically
Inferred Quantities using Dynamic Simulations of Earthquake Sequences
Valère LAMBERT*, Nadia LAPUSTA

13:25

C39

Timing of Earthquakes on Intraplate Active Faults: Earthquake Sequence Simulation
Accounting for Stress Perturbation by Megathrust Earthquakes
Hiroyuki NODA*

13:45

C40

Crustal Stress, Fault Geometry and Dynamic Rupture: Lessons Learned from Recent
Earthquake Events
Ryosuke ANDO*

14:05

C41

Rapid Mantle Flow with Power-law Creep Explains Transient Deformation Following the 2011
Tohoku-Oki Earthquake
Ryoichiro AGATA*, Sylvain BARBOT, Kohei FUJITA, Mamoru HYODO,
Takeshi IINUMA, Ryoko NAKATA, Tsuyoshi ICHIMURA, Takane HORI

14:25

C42

(INVITED) The Anatomy of Subduction Zone: Insight from Geodetic Imaging and Modeling
Sylvain BARBOT*

14:55

C43

Viscoelastic Corrections of the Earthquake Cycle for Estimating Interplate Coupling along the
Nankai TroughTakuya NISHIMURA*, Fred F. POLLITZ

15:15

C44

Modeling Deformation and Stress State of the Japanese Island Arc Crust Considering
Heterogeneous Rheological Structure
Bunichiro SHIBAZAKI*

15:35

Discussion

15:40

Coffee break

15:55

Discussion

17:45

Closing― 140 ―

Poster Session
P01

The Subduction of the Philippine Sea Plate and the Origin of the Kanto Plain, Japan
Naoki UCHIDA*, Aki ITO

P02

Cause of the Spatiotemporal Variation of the Earthquake Swarms in Wakayama Region, NW Kii Peninsula,
Japan
Sumire MAEDA*, Makoto OTSUBO, Toru MATSUZAWA

P03

P-wave Polarity Determination of Waveform Data Observed in Western Japan, Using Deep Learning
Shota HARA*, Yukitoshi FUKAHATA, Yoshihisa IIO

P04

Spatio-temporal Analysis of Seismic Anisotropy Associated with the Cook Strait and Kaikoura Earthquake
Sequaence in New Zealand
Kenny GRAHAM*, Martha SAVAGE, Richard ARNOLD

P05

Geological Background of Inland Earthquakes in the Norheast Japan Arc
Takeyoshi YOSHIDA*

P06

Thermal Structure from Supporting Data for Regional Heat Flow Studies in and Around Japan
Akiko TANAKA*

P07

Crustal Movement Acceleration Prior to the 2011 Tohoku-Oki Earthquake
Yo KAWASHIMA*, Takeshi SAGIYA

P08

Three Dimensional GPS Velocities and Crustal Deformation in Colombia
Sindy Carolina LIZARAZO*, Takeshi SAGIYA, H. MORA-PAEZ

P09

Intraplate Faulting, Stress Accumulation, and Shear Localization of a Crust-Upper Mantle System with
Nonlinear Viscoelastic Rheologies
Xuelei ZHANG*, Takeshi SAGIYA

P10

Non-linear Effects on Stress and Brittleness of Viscoelastic Fluids under Transient Deformation at Large
Strain Rate
Mie ICHIHARA*, Masaharu KAMEDA

P11

Localized Strain Rate in Central and Northeast Japan Before and After the Tohoku-oki Earthquake
Tomomi INAMATSU*, Youichiro TAKADA, Takeshi SAGIYA, Takuya NISHIMURA

P12

Elastic/inelastic Behavior of the Upper Crust by Geologic and Geodetic Explorations: Niigata High Strain
Region (Central Japan)
Makoto OTSUBO*, Takeshi SAGIYA

P13

Quantification of Strain Rate of Brittle Shear Zone in the High Strain-rate Zone, Central Japan
Tomonori TAMURA*, Kiyokazu OOHASHI, Makoto OTSUBO, Ayumu MIYAKAWA,
Masakazu NIWA

P14

Implication of Persistent Ductile Deformation in the Crust from Temporal Variation in coda Q in the
Northeastern Part of the Niigata-Kobe Tectonic Zone, Central Japan
Masanobu DOJO, Yoshihiro HIRAMATSU*

P15

Evaluation of Effects Related to Seamount Subduction on a Shallow Accretionary Prism off Muroto Using
Ocean Drilling Cores and High Resolution Subbottom Profile Images
Yuichi OKUMA*, Asuka YAMAGUCHI, Rina FUKUCHI, Hiroaki KOGE, Juichiro ASHI

P16

Revealing the Mountain Building Process of the NE Japan Arc Using Low-temperature
Thermochronology: Preliminary Data of the North Area
Shoma FUKUDA*, Shigeru SUEOKA, Noriko HASEBE, Akihiro TAMURA,
Tomoaki MORISHITA, Takahiro TAGAMI― 141 ―

P17

Uplift and Denudation History of the South Fossa Magna Region Using Low-temperature
Thermochronometric Methods
Yumi KOBAYASHI*, Shigeru SUEOKA, Shoma FUKUDA, Noriko HASEBE,
Akihiro TAMURA, Tomoaki MORISHITA, Tagami TAGAMI

P18

Monazite Fission-track Dating Method: Development of Lower-temperature Thermochronometer
Ai SHISHIKURA*, Etienne SKRZYPEK, Sean JONES, Ling CHUNG, Andy GLEADOW,
Shigeru SUEOKA, Takahiro TAGAMI

P19

3D Fault Architecture Model along the Median Tectonic Line, Eastern Kii Peninsula, SW Japan
Norio SHIGEMATSU*, Takuma KATORI, Jun KAMEDA, Ayumu MIYAKAWA

P20

Recent Studies along the Median Tectonic Line (MTL) in the Eastern Kii Peninsula, SW Japan
Norio SHIGEMATSU*, Koichiro FUJIMOTO, Masao. KAMETAKA, Takamoto OKUDAIRA,
Hiroshi MORI, Simon WALLIS

P21

Median Tectonic Line Outcrop at Takamiyama in the Central Kii Peninsula, Japan
Tomohiro IMORI, Koichiro FUJIMOTO*, Norio SHIGEMATSU

P22

Mineralogical and Geochemical Features of Cataclasites and Planar Fault Fouges along the Median
Tectonic Line, in the Eastern Kii, SW Japan
Chisaki INAOI, Jun KAMEDA*, Norio SHIGEMATSU, Tomoyuki OHTANI

P23

Deformation Overprint During the Development of the Median Tectonic Line Fault Zone in Mie Prefecture,
Southwest Japan: Evidences for Strain Localization
Dong Van BUI*, Toru TAKESHITA, Shun ARAI, Takafumi YAMAMOTO, Jun-Ichi ANDO

P24

An Introduction to Ryoke Cataclasite Rocks in Tsukide, Mie Prefecture, Japan: An Approach Using 3D
Reconstructions from Thin Sections
Thomas Jing-Yi YEO*, Toru TAKESHITA

P25

The Role of Pressure Solution Creep on Frictional Healing of Quartz Gouge
Naoki NISHIYAMA*

P26

Formation and Development of Lower Crustal Shear Zones: A Petrological Perspective
Takamoto OKUDAIRA*, Yusuke SODA

P27

Regional Variations in Mineralogical Characteristics of Fault Rocks Retrieved from Aftershock Areas of
the 2000 Western Tottori Earthquake
Shunya KANEKI*, Tetsuro HIRONO, Hideki MUKOYOSHI, Kenta KOBAYASHI,
Toru TAKESHITA

P28

Microstructure of Fault Zone That Slipped at the Aftershock of M5.5 Orkney Earthquake
Yuki YOKOYAMA*, Shunya KANEKI, Yasuo YABE, Hiroshi OGASAWARA

P29

Low- to High-velocity Frictional Properties and Microstructure Evolution of Volcaniclastic Sediments
Akari FUKE*, Tetsuro HIRONO, Shunya KANEKI

P30

Estimation of Difference Stress Value Using Residual Strain of Quartz in Deformed Conglomerate andInhomogenous Strain of Conglomerate Layer -An Example of Multiple Collision Zone of Izu-Bonin arc,
Hamaishidake Formation, Central JapanShun SUZUKI*, Kenta KOBAYASHI

P31

Description of Itoigawa-Shizuoka Tectonic Line Outcrop Exposed during Repair Work of Fossa Magna
Park, Itoigawa, Niigata Prefecture, Central Japan
Keita TAKAHASHI*, Shun SUZUKI, Kenta KOBAYASHI, Kou TAKENOUCHI,
Makoto OHKOUCHI

P32

Kinematic and Chemical Processes in the Aftershock Area and the Neighboring Area of the 2000 Tottoriken Seibu Earthquake, Japan
Kenta KOBAYASHI*, Shun SUZUKI, Hideki MUKOYOSHI, Tetsuro HIRONO― 142 ―

P33

The Spatiotemporally Change of the Stress Condition around Hinagu Fault Zone through the 2016
Kumamoto Earthquake Sequence, Central Kyushu, Japan
Ayaho MITSUOKA*, Satoshi MATSUMOTO, Azusa SHITO, Yusuke YAMASHITA,
Manami NAKAMOTO, Masahiro MIYAZAKI, Shinichi SAKAI, Yoshihisa IIO,
Group for urgent joint seismic observation of the 2016 Kumamoto earthquake

P34

Non-double Couple Micro-earthquakes in the Focal Area of the 2000 Western Tottori earthquake (M7.3) by"0.1 manten" Hyper Dense Seismic Observation
Yuto HAYASHIDA*, Satoshi MATSUMOTO, Yoshihisa IIO, Shinichi SAKAI, Aitaro KATO,
Group of “0.1 manten” hyper dense seismic observation

P35

Seismological Imaging Using S-wave Reflection Analysis and Receiver Function Analysis about the Fault
Zone Extending to the Lower Crust
Shinya KATOH*, Yoshihisa IIO, Takuo SHIBUTANI, Hiroshi KATAO, Masayo SAWADA,
Kazuhide TOMISAKA

P36

Strength Profile of The Median Tectonic Line Fault Zone Determined by High-Pressure and -Temperature
Experiments
Miki TAKAHSHI*, Chisaki INAOI, Jun KAMEDA, Hiroshi SAKUMA, Norio Shigematsu

P37

The Role of Metasomatic Alteration on Frictional Behavior of Subduction Thrust Faults at Seismogenic
DepthsKen-ichi HIRAUCHI*, Yuzuru YAMAMOTO, Sabine A. M. DEN HARTOG,
André R. NIEMEIJER

P38

Effects of Temperature on Frictional Strength of Rocks in an Argon Atmosphere
Yuki YOKOYAMA, Michiyo SAWAI*, Kyuichi KANAGAWA

P39

Nanocrystalline Principal Slip Zones
Berend Antonie VERBERNE*, Oliver PLÜMPER

P40

First-Principles Investigation for Frictional Characteristics of Brucite and its Application for Macroscopic
Frictional Characteristics of Sheet-Structure Minerals
Hanaya OKUDA*, Kenji KAWAI, Hiroshi SAKUMA, Ikuo KATAYAMA

P41

Microstructural Development and Strain Partitioning in Experimentally-sheared Granitic Rocks at Brittle
Ductile Transition Zone
Shun ARAI*, Jun MUTO, Masanori KIDO

P42

Dislocation Creep of Orthoenstatite Aggregates under High Pressure and Temperature Conditions
Yumiko TSUBOKAWA*, Tomohiro OHUCHI, Yuji HIGO, Yoshinori TANGE,
Tetsuo IRIFUNE

P43

Dynamically Recrystallized Microstructures of Quartz in the Sanbagawa Metamorphic Belt, Shikoku, Japan
Tadamasa UEDA*, Ichiko SHIMIZU

P44

Spatial and Temporal Variation of Seismic Velocity in the Japanese Island
Takeshi TSUJI*, Tatsunori IKEDA

P45

Sintering of Polycrystalline Clinopyroxene and Ultrasonic Velocity Measurements under High P-T
Conditions
Yumiko TSUBOKAWA*, Masahiro ISHIKAWA

P46

Laboratory Measurements of Vp, Vs, and Vp/Vs for Polycrustalline Labradorite up to 800°C and 1GPa
Satoko HONDA*, Masahiro ISHIKAWA

P47

Magnetotelluric Imaging of Kitakami Mountains, Forearc of NE Japan, in Sereach for Water Wall
Masato FUKAI, Yasuo OGAWA*, Kuo-Hsuan TSENG, Masahiro ICHIKI,
Shinichi TAKAKURA

P48

Comparison of Permeability of Fault Zone Between In-situ Hydraulic Tests and Laboratory-Derived Data at
the Median Tectonic Line, Central Japan
Norio MATSUMOTO*, Norio SHIGEMATSU― 143 ―

P49

Estimation of Magmatic Water Content in Saline Groundwater in Tohoku district, Japan
Yoko S. TOGO*, Kohei KAZAHAYA, Masaaki TAKAHASHI, Yuki TOSAKI,
Noritoshi MORIKAWA, Hiroshi A. TAKAHASHI, Tsutomu SATO, Keika HORIGUCHI

P50

Chlorine Rich Prograde Mineral Assemblage Observed in Diamond-Bearing Garnet Peridotite from the
Qianghai Province, NW CHINA
Kosuke NAEMURA*

P51

Saline Fluid Inclusions in Pinatubo Mantle Xenoliths Linking Subducted Seawater to Arc Magmas
Tatsuhiko KAWAMOTO*, Jun-Ichi KIMURA, Qing CHANG, Masako YOSHIKAWA,
Mitsuru OKUNO, Tetsuo KOBAYASHI

P52

Quantitative Relationship between Aseismic Migration Speed and Frictional Properties
Keisuke ARIYOSHI*, Jean-Paul Ampuero, Roland Bürgmann, Toru MATSUZAWA,
Akira HASEGAWA, Ryota HINO, Takane HORI

P53

Modulation of Fault Strength during the Seismic Cycle by Grain-size Evolution around Contact Junctions
Sylvain BARBOT*

P54

Quasi-static Simulation of Earthquake Cycles in the Nankai Trough, Southwest Japan, Based on Finite
Element Modeling
Ryoichiro AGATA*, Takane HORI, Kohei FUJITA, Mamoru HYODO, Tsuyoshi ICHIMURA

P55

Coulomb Stress Change of Inland Faults during a Megathrust Earthquake Cycle in Southwest Japan
Tsukasa MITOGAWA*, Takuya NISHIMURA

P56

Dense GNSS Observation in the San-in Shear Zone After the 2011 Tohoku-oki Earthquake
Angela MENESES-GUTIERREZ*, Takuya NISHIMURA

P57

Revisiting the Coseismic Slip Distribution of the 2011 Tohoku-oki Earthquake Considering Early
Postseismic Deformation and Heterogeneous Structure
Takeshi IINUMA*, Ryoichiro AGATA, Yusaku OHTA, Ryota HINO, Takane HORI

P58

Mechanism of Interseismic Subsidence of the Northeast Japan Forearc During the Late Period of a Gigantic
Earthquake Cycle
Ryohei SASAJIMA*, Bunichiro SHIBAZAKI, Hikaru IWAMORI, Takuya NISHIMURA

P59

Modeling Absolute Stress Fields in the Hanging Wall of the Northeast Japan Forearc Before and After the2011 Tohoku Earthquake
Ryohei SASAJIMA*, Bunichiro SHIBAZAKI, Hikaru IWAMORI, Keisuke YOSHIDA

P60

Constructing A New Locking Model for the Southern Kurile Trench Including Viscoelastic Relaxation andUpper Plate Deformation
Yuji ITOH*, Takuya NISHIMURA, Kelin WANG, Jiangheng HE, Tianhaozhe SUN

P61

Numerical Simulations of Tsunamis at Hypothetical Megathrust Earthquakes
Shion OSADA*, Tetsuro HIRONO, Shoichi YOSHIOKA, Toshitaka BABA

P62

History of Crustal Deformation and Estimated Earthquake Recurrence Along the Sagami TroughJunki KOMORI*, Ryosuke ANDO, Masanobu SHISHIKURA― 144 ―

Updated Program
9:30

C31

High Resolution Shallow Crustal Structure of the Central Japan by Using Surface-wave
Tomography
Hiro NIMIYA*, Tatsunori IKEDA, Takeshi TSUJI

9:50

C32

Fluid Distribution in the Crust – Inference from Seismic Velocity and Electrical Conductivity
Tohru WATANABE*, Guillaume DESBOIS, Kenta YOSHIDA

10:10

C33

(INVITED) Preparation Zones for Large Crustal Earthquakes as a Consequence of Fault-Valve
Activity
Richard H. SIBSON*

10:40

C34

Researches for Flux Estimation and Continuous Monitoring of Slab-Derived Fluids
Norio Matsumoto*, Kohei Kazahaya, Fumiaki Tsunomori, Noritoshi Morikawa

11:00

C35

A 3-D Crust and Uppermost Mantle Electrical Conductivity Model of Subduction Zone Beneath
NE Japan
Masahiro ICHIKI*, Toshiki KAIDA, Yasuo OGAWA

11:20

C36

Roles of Water in Subduction Zone Dynamics
Hikaru IWAMORI*, Hitomi NAKAMURA, Atsushi NAKAO,
Tatsuji, NISHIZAWA

11:40 ~ 12:40

Lunch

12:40

C38

Energy Budget of Earthquakes: Investigating the Relation Between Actual and Seismologically
Inferred Quantities using Dynamic Simulations of Earthquake Sequences
Valère LAMBERT*, Nadia LAPUSTA

13:00

C39

Timing of Earthquakes on Intraplate Active Faults: Earthquake Sequence Simulation
Accounting for Stress Perturbation by Megathrust Earthquakes
Hiroyuki NODA*

13:20

C40

Crustal Stress, Fault Geometry and Dynamic Rupture: Lessons Learned from Recent
Earthquake Events
Ryosuke ANDO*

13:40

C41

Rapid Mantle Flow with Power-Law Creep Explains Transient Deformation Following the 2011
Tohoku-Oki Earthquake
Ryoichiro AGATA*, Sylvain BARBOT, Kohei FUJITA, Mamoru HYODO,
Takeshi IINUMA, Ryoko NAKATA, Tsuyoshi ICHIMURA, Takane HORI

14:00 ~ 14:15

Coffee break

14:15

C42

(INVITED) The Anatomy of Subduction Zone: Insight from Geodetic Imaging and Modeling
Sylvain BARBOT*

14:45

C43

Viscoelastic Corrections of the Earthquake Cycle for Estimating Interplate Coupling along the
Nankai TroughTakuya NISHIMURA*, Fred F. POLLITZ

15:05

C44

Modeling Deformation and Stress State of the Japanese Island Arc Crust Considering
Heterogeneous Rheological Structure
Bunichiro SHIBAZAKI*

15:25

Discussion

15:40

Coffee break

15:55

Discussion

17:45

Closing― 145 ―