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Short title
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Slip to the Trench
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Oral presentation
Date/Room/Chair
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May 19 AM2 (11:00 - 12:45)
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302
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Shuichi Kodaira
/ Matt Ikari
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May 19 PM1 (14:15 - 16:00)
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302
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Kohtaro Ujiie
/ James Kirkpatrick
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May 19 PM2 (16:15 - 18:00)
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302
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Kelin Wang
/ Demian Saffer
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Poster presentation
Date/Room
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May 19 (Core Time 18:15 - 19:30)
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Convention Hall
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Contact
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Shuichi Kodaira
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Email
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kodaira@jamstec.go.jp
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Convener
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Shuichi Kodaira
/ James Mori
/ Kohtaro Ujiie
/ Kelin Wang
/ Michael Strasser
/ Demian Saffer
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Scope
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Seismological, tsunami, and geodetic data of the 2011 Tohoku-oki earthquake indicate large slip of more than 50 m on the shallow part of the subduction megathrust. Coseismic slip reaching the trench has been inferred from comparisons of seismic and bathymetry images before and after the earthquake. At the Nankai Trough, ocean drilling provided frictional-heating evidence for seismic slip of a frontal thrust. In addition, anomalous slip of the shallow megathrust producing so-called tsunami earthquakes has occurred at several subduction zones. Recent friction experiments suggest that earthquake rupture propagates easily through velocity-strengthening materials by high-velocity weakening. These observations suggest a need to re-examine the widely accepted conceptual model of megathrust slip behavior, especially for the near-trench shallow portion. This session will integrate field observations, experimental results and modeling studies to understand seismic and aseismic slip of the shallow part of the subduction fault.
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Notes
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| Time |
Presentation No |
Title |
Author |
Presenter |
Abstract |
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Oral Presentation May 19 AM2 (11:00-12:45) 302 to the top
|
|
11:00 - 11:15
|
SSS01-01
|
Understanding trench-breaching slip in megathrust earthquakes
|
Shuichi Kodaira
Kohtaro Ujiie
James Mori
other
|
Shuichi Kodaira
|
|
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11:15 - 11:30
|
Invited
SSS01-02
|
Structure and composition of the plate boundary decollement in the area of maximum slip during the 2011 Tohoku-Oki earth
|
James Kirkpatrick
Christie Rowe
Kohtaro Ujiie
other
|
James Kirkpatrick
|
|
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11:30 - 11:45
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Invited
SSS01-03
|
Frictional behavior of shallow subduction zone thrusts: Comparison of the Japan Trench and Nankai Trough
|
Matt Ikari
Jun Kameda
Achim Kopf
other
|
Matt Ikari
|
|
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11:45 - 12:00
|
SSS01-04
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Laboratory experiments on the Japan Trench plate-boundary thrust material reveal very low co-seismic shear strength
|
Kohtaro Ujiie
Hanae Tanaka
Tsubasa Saito
other
|
Kohtaro Ujiie
|
|
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12:00 - 12:15
|
SSS01-05
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Extreme Low Friction of the Tohoku Plate Boundary as a possible factor for seismic slip propagation toward the trench
|
Takehiro Hirose
Wataru Tanikawa
Mukoyoshi Hideki
other
|
Takehiro Hirose
|
|
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12:15 - 12:30
|
SSS01-06
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Frictional properties of sediments on the Cocos Plate entering the Costa Rica Subduction Zone
|
Akito Tsutsumi
Yuka Namiki
Kohtaro Ujiie
other
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Akito Tsutsumi
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|
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12:30 - 12:45
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Invited
SSS01-07
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Mechanism of 2011 Tohoku-oki Earthquake in view of Fault Mechanics
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Toshihiko Shimamoto
Bunichiro Shibazaki
Hiroyuki Noda
|
Toshihiko Shimamoto
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|
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Oral Presentation May 19 PM1 (14:15-16:00) 302 to the top
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14:15 - 14:30
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SSS01-08
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Using Temperature to Measure Fault Stress
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Emly Brodsky
Haibing Li
Lian Xue
other
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Emly Brodsky
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|
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14:30 - 14:45
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SSS01-09
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The JFAST Fault Zone Observatory: Monitoring the frictional heat from the 2011 Tohoku Earthquake
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Patrick Fulton
Emly Brodsky
KANO Yasuyuki
other
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Patrick Fulton
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14:45 - 15:00
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SSS01-10
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Boron and strontium isotope constraint on the origin of interstitial water from IODP Expedition 343, JFAST
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Tsuyoshi Ishikawa
SAMPLE, James
Ken Takai
other
|
Tsuyoshi Ishikawa
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15:00 - 15:15
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SSS01-11
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Bending-related normal faulting influence on near trench decollement propagation along the Japan Trench
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Brian Boston
Yasuyuki Nakamura
Shuichi Kodaira
other
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Brian Boston
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|
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15:15 - 15:30
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Invited
SSS01-12
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Turbidite paleoseismology in the Japan Trench floor: Results from Sonne SO219A and Mirai MR12-E01 cruises
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Ken Ikehara
Toshiya Kanamatsu
Michael Strasser
other
|
Ken Ikehara
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15:30 - 15:45
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SSS01-13
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A Slump in the Trench: Tracking the impact of the 2011 Tohoku-Oki earthquake
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Michael Strasser
Martin Kolling
Christian dos Santos Ferreira
other
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Michael Strasser
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|
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15:45 - 16:00
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SSS01-14
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Earthquakes recovering the strain energy lost at interseismic stage
|
Yoshio Fukao
Takane Hori
Shuichi Kodaira
|
Yoshio Fukao
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Oral Presentation May 19 PM2 (16:15-18:00) 302 to the top
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16:15 - 16:30
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SSS01-15
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Investigating the Relation Between Trench-breaching Rupture and Shallow Afterslip
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Kelin Wang
Tianhaozhe Sun
Takeshi Iinuma
other
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Kelin Wang
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16:30 - 16:45
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SSS01-16
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Shallow episodic tremor and slip near the Japan Trench before the 2011 Tohoku-Oki earthquake
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Yoshihiro Ito
Ryota Hino
Syuichi Suzuki
other
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Yoshihiro Ito
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16:45 - 17:00
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SSS01-17
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Enhanced dewatering and non-deforming upper plates: Facilitating high slip near the trench at non-accretionary margins?
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Demian Saffer
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Demian Saffer
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17:00 - 17:15
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SSS01-18
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Pore pressure distribution in the Nankai Trough off Kumano: Potential rupture propagation from mega-splay to decollement
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Takeshi Tsuji
Rie Kamei
Gerhard Pratt
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Takeshi Tsuji
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17:15 - 17:30
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SSS01-19
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A Shallow Interplate Coupling Model in The Java Trench, Off The Western Coast of Java, Indonesia, Revealed from GPS Data
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N. Rahma Hanifa
Takeshi Sagiya
Fumiaki Kimata
other
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N. Rahma Hanifa
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|
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17:30 - 17:45
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SSS01-20
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Imaging megathrust zone and Yakutat/Pacific plate interface in Alaska subduction zone
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YoungHee Kim
Geoffrey A. Abers
Jiyao Li
other
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YoungHee Kim
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17:45 - 18:00
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3-min talk in an oral session@(SSS01-P02/SSS01-P03/SSS01-P04/SSS01-P05/SSS01-P06)
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| Presentation No |
Title |
Author |
Presenter |
Abstract |
|
Poster Presentation May 19 Core Time (18:15-19:30) Convention Hall to the top
|
|
SSS01-P01
|
Fluid transport property of sediments near the plate boundary fault at Japan Trench
|
Wataru Tanikawa
Takehiro Hirose
Weiren Lin
other
|
Wataru Tanikawa
|
|
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SSS01-P02
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Structural heterogeneities around the shallow megathrust zone of the 2011 Tohoku earthquake
|
Yojiro Yamamoto
Koichiro Obana
Yuya Machida
other
|
Yojiro Yamamoto
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SSS01-P03
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Rock-magnetic properties of the plate-boundary thrust material drilled during IODP Expedition 343 (JFAST)
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Toshiaki Mishima
Tao Yang
James J. Mori
other
|
Toshiaki Mishima
|
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SSS01-P04
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Sediment fabric record in the trench axis formed during the 2011 Tohoku-oki earthquake
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Toshiya Kanamatsu
Ken Ikehara
Kiichiro Kawamura
other
|
Toshiya Kanamatsu
|
|
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SSS01-P05
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Seismic imaging in the Japan Trench axis area off Miyagi, northeastern Japan
|
Yasuyuki Nakamura
Shuichi Kodaira
Seiichi Miura
other
|
Yasuyuki Nakamura
|
|
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SSS01-P06
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New approaches to advanced GPS/A geodetic observation on the seafloor
|
Hiromi Fujimoto
Motoyuki Kido
Yusaku Ohta
other
|
Hiromi Fujimoto
|
|
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SSS01-P07
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Precursory Seismic Activity Surrounding the High-Slip Patches of the 2011 Mw9.0 Tohoku-Oki Earthquake
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Tamao Sato
Shinya Hiratsuka
James Mori
|
Tamao Sato
|
|
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SSS01-P08
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Aftershock seismicities of three great earthquakes and their implications for lithospheric deformation
|
Tae-Kyung Hong
Junhyung Lee
|
Tae-Kyung Hong
|
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