Connotea
CiteULike
del.ico.us
BibSonomyAbstract
GEOPHYSICAL RESEARCH LETTERS,
VOL. 37,
L06310,
6 PP., 2010
doi:10.1029/2009GL041522
Thermal structure of the subduction zone in western Japan derived from seismic attenuation data
Disaster Prevention Research Institute, Kyoto University, Uji, Japan
Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Bandung, Indonesia
Disaster Prevention Research Institute, Kyoto University, Uji, Japan
Disaster Prevention Research Institute, Kyoto University, Uji, Japan
We use a well determined three-dimensional attenuation model to infer the temperature distribution of the subduction zone in western Japan. The tomographic attenuation model was derived from about 19,000 t* determinations for P- waves recorded at 128 stations. The attenuation model with a previously determined velocity model was used to infer the temperature distribution of the subduction zone from depths of 15 to 80 km, using the high temperature background method. We can clearly see the cooler slab (400°C to 700°C) that is being subducted under the hotter mantle material (425°C to 850°C). We also show that the deep low-frequency earthquakes are occurring in regions just above the slab with temperatures of about 500°C to 600°C.
Received 3 November 2009; accepted 22 February 2010; published 30 March 2010.
Citation: (2010), Thermal structure of the subduction zone in western Japan derived from seismic attenuation data, Geophys. Res. Lett., 37, L06310, doi:10.1029/2009GL041522.
Cited By