19日から22日に NTU (Nanyan Technological University, Singapore) の Barbot
博士が滞在されます。
滞在中に下記のセミナーを行って頂けます。

(1) 12月19日（月） 13:30-14:30 地震予知研究センター C-200　・・・　終了
Title: A unified representation of quasi-dynamic deformation processes

(2) 12月22日（木） 16:00-17:00 本館 E-232D
（うなぎセミナーが延びた場合は、その後小休憩の後に開始）
Title: Partial Rupture of Locked Segments: The Role of Fault Morphology

Abstract:
Assessment of seismic hazard relies on estimates of how large an area of a tectonic fault
could potentially rupture in a single earthquake. Vital information for these forecasts
includes which areas of a fault are locked and how the fault is segmented. Much research
has focused on exploring downdip limits to fault rupture from chemical and thermal
boundaries, and along-strike barriers from subducted structural features, yet we
regularly see only partial rupture of fully locked fault patches that could have ruptured
as a whole in a larger earthquake. Here we draw insight into this conundrum from the
25 April 2015 Mw 7.8 Gorkha (Nepal) earthquake. We invert geodetic data with a
structural model of the Main Himalayan thrust in the region of Kathmandu, Nepal,
showing that this event was generated by rupture of a décollement bounded on all sides
by more steeply dipping ramps. The morphological bounds explain why the event
ruptured only a small piece of a large fully locked seismic gap. We then use dynamic
earthquake cycle modeling on the same fault geometry to reveal that such events are
predicted by the physics. Depending on the earthquake history and the details of rupture
dynamics, however, great earthquakes that rupture the entire seismogenic zone are also
possible. These insights from Nepal should be applicable to understanding bounds on
earthquake size on megathrusts worldwide.

皆様、ふるってご参加ください。

会場は、以下の地図の27番のE棟の2階です。
http://www.kyoto-u.ac.jp/ja/access/campus/map6r_uji.html