Hiroko KITAJIMA
Institute: Texas A&M University, TEXAS
Title: Associate Professor
Country/Region: USA
Period: 2022/05/30-2022/7/20
Theme: Evaluation of stress state and strength of the splay fault at the Nankai Trough
Host: Masataka KINOSHITA
Introduction: My research interest is an experimental rock and soil mechanics to characterize the hydromechanical properties of rocks and sediments deformed at different pressure, temperature, and strain rate conditions. With the aim of better understanding a wide range of geological problems, I combine lab experimental work with numerical modeling, geophysical data, and fieldwork, including ocean/continental drilling projects. Current research focuses on understanding (1) the deformation processes on sediments and rocks under various loading conditions associated with earthquakes in subduction zones, (2) the micromechanics of compaction and shear deformation on granular materials at high strain rates and high pressures, and (3) the effects of fluid-rock interaction on frictional shear. During my stay at ERI, I plan to integrate the experimentally-determined rock properties with geophysical observations, including heat flow, seismic wave velocity structure, and tectonic deformation structures, to better understand the mechanics of various types of faulting and earthquakes and the formation of accretionary prisms at the Nankai Trough.
Fiscal Year: 2022