Download 應用地質研究所 - 中華民國地球物理學會

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Age of the Earth wikipedia , lookup

History of geology wikipedia , lookup

Deep sea community wikipedia , lookup

Geophysics wikipedia , lookup

Post-glacial rebound wikipedia , lookup

Geology wikipedia , lookup

Interferometric synthetic-aperture radar wikipedia , lookup

Oceanic trench wikipedia , lookup

Paleostress inversion wikipedia , lookup

Chinese Taipei Geophysical Society
Graduate Institute of Applied Geology, National Central University
Department of Earth Sciences, National Central University
Title:Stress states and sediment deformation at the
Nankai subduction zone
Speaker:Dr. Hiroko Kitajima (Texas A&M University)
Date:July 11, 2016,(Monday), 14:00~15:30
Location:S-253, Science Building 1, National Central University
Understanding the mechanics of plate boundary earthquakes requires a sound
investigation of in-situ stress condition, slip behavior, and deformation
mechanisms. It is critical to well characterize not only the in-situ stress and
pore pressure condition, but also an absolute strength and mechanical behavior
at stress conditions. Compaction of the subducting sediments plays an
important role in the deformation in the shallow portion of subduction zones
because the deformation mode (either brittle or ductile) and strength of porous
rocks are largely dependent on both porosity and pressure. In this talk, I will
present results of triaxial deformation experiments on (1) core samples
currently subducting at the Nankai Trough and (2) prism samples from the
Shimanto complex, which have been subducted, underthrusted, and
underplated along the ancient plate boundary. Based on the experimental
results, I will discuss the stress state and strength from the trench to the
seismogenic depths.