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Expedition 319 participants

Expedition 319 scientists

Eiichiro Araki (4–25 June, 17–27 July, and 9–31 August 2009)
Co-Chief Scientist/VSP Specialist
Earthquake and Tsunami Research Project
for Disaster Prevention
Japan Agency for Marine-Earth Science
and Technology
2-15 Natsushima-cho, Yokosuka
Kanagawa 237-0061
Japan
araki@jamstec.go.jp

Tim Byrne (4 June–17 July 2009)
Co-Chief Scientist
Center for Integrative Geosciences
University of Connecticut
U-2045, 354 Mansfield Road
Storrs CT 06269

USA
tim.byrne@uconn.edu

Lisa McNeill (25 June–9 August 2009)
Co-Chief Scientist
School of Ocean and Earth Science
National Oceanography Centre, Southampton
University of Southampton
Southampton SO14 3ZH
United Kingdom
lcmn@noc.soton.ac.uk

Demian Saffer (17 July–31 August 2009)
Co-Chief Scientist
The Pennsylvania State University
0310 Deike Building
University Park PA 16802
USA
dsaffer@geosc.psu.edu

Nobuhisa Eguchi (5 May–8 June and 25 June–17 July 2009)
Expedition Project Manager
Center for Deep Earth Exploration

Japan Agency for Marine-Earth Science
and Technology
3173-25 Showa-machi
Kanazawa-ku, Yokohama
Kanagawa 236-0001
Japan
neguchi@jamtec.go.jp

Kyoma Takahashi (4 June–25 June 2009)
Expedition Project Manager
Center for Deep Earth Exploration
Japan Agency for Marine-Earth Science
and Technology
3173-25 Showa-machi
Kanazawa-ku, Yokohama
Kanagawa 236-0001
Japan
kyoma@jamstec.go.jp

Sean Toczko (17 July–31 August 2009)
Expedition Project Manager
Center for Deep Earth Exploration
Japan Agency for Marine-Earth Science
and Technology
3173-25 Showa-machi
Kanazawa-ku, Yokohama
Kanagawa 236-0001
Japan
sean@jamstec.go.jp

Moe Kyaw Thu
Logging Staff Scientist
Center for Deep Earth Exploration
Japan Agency for Marine-Earth Science
and Technology
3173-25 Showa-machi
Kanazawa-ku, Yokohama
Kanagawa 236-0001
Japan
moe@jamstec.go.jp

Yoshinori Sanada
Logging Staff Scientist/VSP Coordinator
Center for Deep Earth Exploration
Japan Agency for Marine-Earth Science
and Technology
3173-25 Showa-machi
Kanazawa-ku, Yokohama
Kanagawa 236-0001
Japan
sanada@jamstec.go.jp

David Boutt (4 June–20 July 2009)
Physical Properties/Downhole
Measurements Specialist
Department of Geosciences
University of Massachusetts, Amherst
611 North Pleasant Street, 233 Morrill Center
Amherst MA 01002
USA

dboutt@geo.umass.edu

David Buchs (17 July–31 August 2009)
Sedimentologist
Universite de Lausanne
Australian National University
Research School of Earth Sciences
61 Mills Road, Building J1
0200 Canberra
Australia

david.buchs@unil.ch
david.buchs@anu.edu.au

Christophe Buret (4 June–17 July 2009)
Sedimentologist
Universite de Picardie Jules Verne
33 rue Saint Leu
80000 Amiens
France
christophe.buret@u-picardie.fr

Marianne Conin (20 July–31 August 2009)
Physical Properties/Downhole
Measurements Specialist
CEREGE—College de France
Europole de l'Arbois, Bat Trocadero
BP 80
13545 Aix en Provence Cedex 04
France
mconin@crpg.cnrs-nancy.fr

Deniz Cukur (20 July–31 August 2009)
Logging Specialist
Pukyong National University
Department of Energy Resources Engineering
599-1, Daeyeon 3-Dong, Nam-Gu
608-737 Busan
Korea
cukurdeniz@hotmail.com

Mai-Linh Doan (4 June–20 July 2009)
Physical Properties/Logging Specialist
Laboratoire de Géophysique
et Tectonophysique
Université Grenoble 1 (Joseph Fourier)
BP53, 1381, rue de la Piscine
38041 Grenoble Cedex 9
France
Mai-Linh.Doan@obs.ujf-grenoble.fr

Natalia Efimenko (4 June–20 July 2009)
Sedimentologist
Institut de Géologie et Paléontologie
Université de Lausanne
Amphipôle
1015 Lausanne-Dorigny
Switzerland
natalia.efimenko@unil.ch

Peter Flemings (17 July–31 August 2009)
Physical Properties/Downhole
Measurements Specialist
Institute for Geophysics
Jackson School of Geosciences
University of Texas at Austin
10100 Burnet Road (R2200)Austin TX 78758-4445
USA

pflemings@jsg.utexas.edu

Nicholas Hayman (4 June–20 July 2009)
Structural Geologist
Institute for Geophysics
Jackson School of Geosciences
University of Texas at Austin
10100 Burnet Road (R2200)
Austin TX 78758-4445
USA
hayman@ig.utexas.edu

Keika Horiguchi (4 June–17 July 2009)
Geochemist
Department of Earth and Space Sciences

Osaka University
1-1 Machikaneyama, Toyonaka
Osaka 560-0043
Japan
keika@ess.sci.osaka-u.ac.jp

Gary Huftile (17 July–31 August 2009)
Structural Geologist
Queensland University of Technology
GPO Box 2434
Brisbane Qld 4001
Australia
g.huftile@qut.edu.au

Takatoshi Ito (4 June–20 July 2009)
Physical Properties/Downhole
Measurements Specialist
Institute of Fluid Science
Tohoku University
2-1-1 Katahira, Aoba-ku
Sendai, Miyagi 980-8577
Japan
ito@ifs.tohoku.ac.jp

Shijun Jiang (4 June–17 July 2009)
Micropaleontologist
(calcareous nannofossils)
Geological Sciences
Florida State University
108 Carraway Building
Tallahassee FL 32306
USA
jiang@gly.fsu.edu

Koji Kameo (6 August–31 August 2009)
Micropaleontologist
Department of Earth Sciences
Chiba University
1-33, Yayoi, Inage, Chiba
263-8522, Chiba
Japan
kameo@faculty.chiba-u.jp

Yasuyuki Kano (17 July–31 August 2009)
Logging Specialist
Disaster Prevention Research Institute
Kyoto University
Gokasho, Uji 611-0011
Japan
kano@rcep.dpri.kyoto-u.ac.jp

Kuniyo Kawabata (17 July–31 August 2009)
Sedimentologist
National Central University (TWN)
Institute of Geophysics
300 Chung-Da Road, Chung Li City
Taoyuan 32001
Taiwan
kuniyo@eqkc.earth.ncu.edu.tw

Kazuya Kitada (20 July–31 August 2009)
Observatory Specialist
Institute for Research on Earth Evolution
Japan Agency for Marine-Earth Science
and Technology
2-15 Natsushima-cho, Yokosuka
Kanagawa 237-0061
Japan
kkitada@jamstec.go.jp

Achim Kopf (6 August–31 August 2009)
Observatory Specialist
Marum Research Centre
Bremen University
Leobener Strasse, MARUM Building
28359 Bremen
Germany
akopf@uni-bremen.de

Weiren Lin (4 June–17 July 2009)
Physical Properties/Downhole
Measurements Specialist (hydrogeology)
Kochi Institute for Core Sample Research
Japan Agency for Marine-Earth Science
and Technology
200 Monobe-Otsu, Nankoku
Kochi 783-8502
Japan
lin@jamstec.go.jp

J. Casey Moore (20 July–31 August 2009)
Logging Specialist
University of California, Santa Cruz
1156 High Street
Santa Cruz CA 95064
USA
casey@pmc.ucsc.edu

Anja Schleicher (4 June–17 July 2009)
Sedimentologist
Department of Geological Sciences
University of Michigan
1100 North University Avenue
Ann Arbor MI 48109
USA
aschleic@umich.edu

Roland von Huene (20–26 July 2009)
VSP Specialist
Department of Geology
University of California, Davis
2910 North Canyon Road
Camino CA 95709
USA
rhuene@mindspring.com

Thomas Wiersberg (4 June–6 August 2009)
Geochemist
GFZ German Research Center for Geosciences
Section 4.2
Telegrafenberg
14479 Potsdam
Germany
wiers@gfz-potsdam.de

Chief Project Scientists

Masataka Kinoshita (10 May–27 May 2009)
Chief Project Scientist
Institute for Research on Earth Evolution
Japan Agency for Marine-Earth Science
and Technology
2-15 Natsushima-cho, Yokosuka
Kanagawa 237-0061
Japan
masa@jamstec.go.jp

Harold Tobin (22 May–4 June 2009)
Chief Project Scientist
Department of Geology and Geophysics
University of Wisconsin-Madison
1215 West Dayton Street
Madison WI 53706
USA
htobin@wisc.edu

NanTroSEIZE specialty coordinators

Toshiya Kanamatsu
Paleomagnetism/Biostratigraphy
Institute for Research on Earth Evolution
Japan Agency for Marine-Earth Science
and Technology
2-15 Natsushima-cho
Yokosuka
Kanagawa 237-0061
Japan
toshiyak@jamstec.go.jp

Gaku Kimura
Structural Geology
Department of Earth and Planetary Science
Graduate School of Science
University of Tokyo
7-3-1 Hongo, Bunkyo-ku
Tokyo 113-0033
Japan
gaku@eps.s.u-tokyo.ac.jp

Gregory Moore
Core-Log-Seismic Integration
Department of Geology and Geophysics
University of Hawaii
1680 East-West Road
Honolulu HI 96822
USA
gmoore@hawaii.edu

Demian Saffer
Physical Properties
The Pennsylvania State University
0310 Deike Building
University Park PA 16802
USA
dsaffer@geosc.psu.edu

Michael B. Underwood
Sedimentology
University of Missouri
307 Geology Building
Columbia MO 65211
USA
underwoodm@missouri.edu

Geoff Wheat
Geochemistry
School of Fisheries and Ocean Sciences
University of Alaska Fairbanks
PO Box 475
Moss Landing CA 99775
USA
wheat@mbari.org

Shipboard personnel and technical representatives

Captains (Mantle Quest Japan)
Yasushi Minoura
Yuji Onda

Offshore Installation Managers (Mantle Quest Japan)
Seizaburo Higuchi
Stephen Krukowski

Operations Superintendents (CDEX)
Tsuyoshi Abe
Ikuo Sawada

Curators (Marine Works Japan)
Yohei Arakawa
Satoshi Hirano
Masaru Yasunaga

Assistant Curators (Marine Works Japan)
Toru Fujiki
Tatsuya Kawai
Lena Maeda

Coring Supervisor (AAI)
Jim Aumann

Downhole Tools Engineers
Tan Ting Cheng, Baker Oil Tools

Drilling Engineers (CDEX)
Daiji Ikenomoto
Yasuhiro Kawano
Yoshinori Masumoto
Tomokazu Saruhashi

Information Technology Manager (Marine Works Japan)
Yukari Kido

Shigemi Matsuda
Laboratory Officers (Marine Works Japan)
Hiroaki Muraki
Toshikatsu Kuramoto

Assistant Laboratory Officers (Marine Works Japan)
Toru Fujiki
Soichi Moriya
Tomoyuki Tanaka

Laboratory Technicians (Marine Works Japan)

Akihiko Fujihara

Yuji Fuwa

Yasushi Hashimoto

Kentaro Hatakeda

Yoko Isoda

Yoshiki Kido

Ryo Kurihara

Yutaka Matsuura

Shunsuke Miyabe

Kazuki Harumoto

Hiroyuki Hayashi

Yuya Hitomi

Stomi Kame

Tatsuya Kawai

Sayaka Kawamura

Toru Koizumi

Yuki Miyajima

Soichi Moriya

Hideki Mukoyoshi

Yukihiko Nakano

Masahiro Nishimura

Tetsuhara Nishino

Toshikatsu Sugawara

Tomohiko Sugiyama

Takahiro Suzuki

Yohei Taketomo

Naotaka Togashi

Hiroki Ushiromura

Publication Assistants (USIO)

Ginny Lowe

Lorri Peters

Operations Geologists (CDEX)

Kyo Furuya

Takayasu Honda

Atsushi Ibusuki

Toshiro Kaminishi

Kiyoshi Koide

Kazuhiro Takahashi

Shigenobu Uraki

Abstract

The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) is a coordinated, multiexpedition drilling project designed to investigate fault mechanics and seismogenesis along subduction megathrusts through direct sampling, in situ measurements, and long-term monitoring in conjunction with allied laboratory and numerical modeling studies. The fundamental scientific objectives of the NanTroSEIZE project include characterizing the nature of fault slip and strain accumulation, fault and wall rock composition, fault architecture, and state variables throughout the active plate boundary system. As part of the NanTroSEIZE program, operations during Integrated Ocean Drilling Program (IODP) Expedition 319 included riser drilling, analyses of cuttings and core samples, downhole measurements and logging, and casing at Site C0009 in the Kumano forearc basin as well as riserless drilling, logging while drilling (LWD), casing, and observatory operations at Site C0010 across a major splay fault (termed the "megasplay") that bounds the seaward edge of the forearc basin near its updip terminus. In addition, we drilled at contingency Site C0011 to collect logging-while-drilling data in advance of planned coring operations scheduled as part of IODP Expedition 322.

Site C0009 marked the first riser drilling in IODP history. This allowed several scientific operations unprecedented in IODP, including carefully controlled measurements of in situ pore pressure, permeability and minimum principal stress magnitude, real-time mud gas analysis, and laboratory analyses of cuttings throughout the entire riser-drilled depth range (~700–1600 meters below seafloor [mbsf]). We conducted a leak-off test at one depth interval and successfully deployed the wireline Modular Formation Dynamics Tester 12 times to directly measure in situ stress magnitude, formation pore pressure, and permeability. During all phases of riser drilling, we collected mud gas for geochemical analyses and cuttings samples were collected throughout the entire riser-drilled depth range. Integration of data from cuttings, wireline logging, and cores (from a limited depth interval) allowed definition of a single integrated set of lithologic units and comparison with previously drilled IODP Site C0002 to determine the evolutionary history of the forearc basin. After casing the borehole, we conducted a long-offset (up to 30 km) two-ship active seismic experiment, recording shots within the borehole to image the megasplay and master décollement beneath the borehole, and to evaluate seismic velocity and anisotropy of the forearc basin and accretionary prism sediments around the borehole.

At riserless Site C0010, operations included drilling with measurement while drilling (MWD)/LWD across the megasplay fault to 555 mbsf, casing the borehole with screens at the depth of the fault, conducting an observatory dummy run to test future strainmeter and seismometer deployment procedures, and installation of a temporary pore pressure and temperature monitoring system in advance of planned future permanent observatory emplacement. The observatory system (termed a "smart plug") marks the first observatory installation of the NanTroSEIZE program. MWD/LWD data at this site were used to define unit boundaries and the fault zone target interval for placement of the casing screens. Through comparison with previously drilled Site C0004 these data also provide insights into along-strike differences in the architecture of the megasplay fault and hanging wall.

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