Characterization of carbonaceous materials in the Taiwan Chelungpu fault by micro FTIR-Raman spectroscopies

Yuka MAEKAWA; Tetsuro HIRONO; Hikaru YABUTA

Presentation information

Oral

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS32_1AM1] Fault Rheology and Earthquake Dynamics

Thu. May 1, 2014 9:00 AM - 10:45 AM 315 (3F)

Convener:*Kiyokazu Oohashi(Graduate School of Science, Chiba University), Takeshi Iinuma(International Research Institute of Disaster Science, Tohoku University), Wataru Tanikawa(Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research), Yuta Mitsui(Department of Geosciences, Graduate School of Science, Shizuoka University), Chair:Kiyokazu Oohashi(Graduate School of Science, Chiba University), Yuta Mitsui(Department of Geosciences, Graduate School of Science, Shizuoka University)

9:45 AM - 10:00 AM

[SSS32-04] Characterization of carbonaceous materials in the Taiwan Chelungpu fault by micro FTIR-Raman spectroscopies

Yuka MAEKAWA¹, *Tetsuro HIRONO¹, Hikaru YABUTA¹ (1.Department of Earth and Space Science, Graduate School of Science, Osaka University)

Keywords:Taiwan Chi-Chi earthquake, carbonaceous materials, FTIR spectroscopy, Raman spectroscopy

Coseismic slip during an earthquake induces frictional heating in fault zone. Determination of the temperature recorded in the fault is important for estimating the dynamic shear stress and displacement during the earthquake. Here we performed micro FTIR-Raman spectroscopic analyses of carbonaceous materials from the Taiwan Chelungpu fault, which slipped at the 1999 Chi-Chi earthquake. We also conducted heating experiments and friction experiments and analyzed by FTIR-Raman spectroscopies in order to investigate the effects of fast heating rate like frictional heating during earthquake. Based on the results of analyses, we discuss the capability as new temperature proxy during the earthquake.