Follow the instructions at the website below for your abstract submission, which is due February 11 JST.
http://www.asiaoceania.org/aogs2014/public.asp?page=abstract.htm
SE20: New perspectives on subduction zone megathrust earthquakes
The Mw 9.0 Tohoku-oki earthquake and its accompanying tsunami on March 11, 2011 devastated a large area along the Pacific coast of NE Japan, killing at least 15,880 people and leaving about 2,650 people still missing. Such megathrust earthquakes at subduction zones and their accompanying tsunamis have caused severe damage in the past. Scientists have worked for decades to understand subduction zone earthquakes and related phenomena, mostly based on seismic and geodetic observations. In addition to these remote monitoring studies, the challenge of drilling into and directly sampling megathrust earthquake faults at depth, analysis of and experiments on sampled fault materials, and borehole measurements at depth have recently been taken up by the Integrated Ocean Drilling Program (IODP) projects at Nankai Trough (Nankai Trough Seismogenic Zone Experiment; NanTroSEIZE), Japan Trench (Japan Trench Fast Drilling Project; JFAST), and off Costa Rica (Costa Rica Seismogenesis Project; CRISP). The JFAST expedition in 2012 successfully sampled the plate boundary megathrust near the trench, which is shown to have slipped during the 2011 Tohoku-oki earthquake by seismological, tsunami and geodetic studies. The NanTroSEIZE expeditions started in 2007, and target sampling the seismogenic megasplay fault at a depth of ~5200 m below seafloor in 2015. The CRISP project targets sampling the seismogenic plate boundary megathrust in the next decade. These IODP projects are providing us a new perspective on megathrust earthquakes. In this session, we welcome presentations based on such frontier studies, in addition to those based on seismic and geodetic observations and numerical modeling. This session is sponsored by Japanese MEXT grant “KANAME” (KAkenhi for NAnkai Megathrust Earthquakes), and we also anticipate many presentations on the outcomes of the KANAME studies.
Invited speakers and their tentative talk titles are as follows.
Frederick Chester (Texas A&M University): Insights to mechanisms and mechanics of large shallow slip during the Tohoku-oki earthquake from JFAST, IODP Expedition 343/343T
Kohtaro Ujiie (Tsukuba University): Very low coseismic fault strength determined from high-velocity friction experiments on the Japan Trench plate-boundary material
Partick Fulton (University of California, Santa Cruz): Low coseismic friction on the Tohoku-oki fault determined by sub-seafloor temperature measurements
Shuichi Kodaira (JAMSTEC): Seismological evidences of slips to the trench axis along the Japan Trench
Michael Strasser (ETH Zürich): Extreme events archived in the sedimentary record of Japan’s subduction margins
Hiroko Kitajima (Geological Survey of Japan): Quantification of in situ pore pressure and stress in the Nankai subduction zone
Paola Vannucchi (Royal Holloway, University of London): CRISP: Seismogenesis at an extremely erosive margin
Nathan Bangs (University of Texas at Austin): Hydrogeologic controls on the seismogenic zone along the Costa Rica subduction zone
Arito Sakaguchi (Yamaguchi University): Characteristic magnitude of subduction zone earthquakes and the roll of upper plate stiffness
We are looking forward to your abstracts and seeing you in Sapporo this summer!
Harold Tobin
Conveners
Harold Tobin (University of Wisconsin, Madison)
César Ranero (Instituto de Ciencias del Mar, Barcelona)
Ryota Hino (Tohoku University)
Satoshi Ide (University of Tokyo)
Kyu Kanagawa (Chiba University)