Thread: SZ4D International Webinar on Friday 8/28 - Dr. Shuichi Kodaira: Uncovering Fault Slip behavior in Japan

Started: 2020-08-25 15:43:02
Last activity: 2020-08-25 15:43:02
Topics: Other Meetings
SZ4D is hosting an International Webinar this Friday by Dr. Shuichi Kodaira
of JAMSTEC on exciting new developments in megathrust science in Japan
Uncovering fault slip behavior in the Japan Trench and the Nankai Trough -
Results from 10-year studies and future research strategies

Shuichi Kodaira - Institute for Marine Geodynamics, JAMSTEC, Japan

August 28th, 2020 at 9 AM PDT / Noon EDT

Zoom Webinar
Register Now ⟶
<https://washington.zoom.us/meeting/register/tJcod-yrpjwjE9U5DG7v_AqcRPAJPZWmS8_Y

https://washington.zoom.us/meeting/register/tJcod-yrpjwjE9U5DG7v_AqcRPAJPZWmS8_Y


It has been ten years since the Tohoku-oki earthquake occurred. Although
this earthquake has caused a huge disaster to the entire country, the
lessons learned from the earthquake have taught us what a scientific
community needs to do to prepare for the next big earthquake. Various
observations and data analyses immediately after the earthquake revealed
that the cause of the giant tsunami was the huge fault slip of 50 m in the
shallow part of the Japan Trench. Marine geophysical and geological studies
on the Tohoku-oki earthquake over the past about ten years have provided
new insights into the slip behavior of plate boundary faults and unresolved
problems as follows: 1) is large shallow trench slip ubiquitously occurring
spatially and temporally across the entire Japan Trench? 2) what are the
factors that determine giant fault sliding? 3) what is a source process to
generate a huge tsunami? 4) what are the effects of the large shallow
megathrust earthquake on earthquake activity in the outer trench-slope?
5) what does fault slip behavior indicate before and after the earthquake?
An essential approach to solving the problems raised by the Tohoku-oki
earthquake is to capture an entire process before, during, and after a
large earthquake. We believe the Nankai Trough is one of the most
appropriate sites for addressing the unsolved questions above because the
probability of the next M8-class earthquake there is remarkably high.
Therefore, we are conducting a project in the Nankai Trough to model the
behavior of fault slip by a realistic seismogenic zone model and
continuously monitoring seafloor deformation before, during, and after the
earthquake. In this webinar, I will talk about the nature of large shallow
plate boundary slip, unresolved issues of the Tohoku-oki earthquake
revealed by the 10-year marine geophysical and geological studies, and the
projects currently underway in the Nankai Trough based on the lessons
learned from the earthquake.

*SZ4D presents International Webinars, a series where the working groups
invite international scientists to present on different topics relevant to
their research and region. SZ4D values international voices and invites you
to learn from these folks.*
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