[vc_empty_space][vc_empty_space]
Thermal structure of the subduction zone in western Japan derived from seismic attenuation data
Nugraha A.D.a,b, Mori J.a, Ohmi S.a
a Disaster Prevention Research Institute, Kyoto University, Japan
b Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text][1] 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. Citation: Nugraha, A. D., J. Mori, and S. Ohmi (2010), Thermal structure of the subduction zone in western Japan derived from seismic attenuation data, Geophys. Res. Lett., 37, L06310, earthquakes close to and above the subducting slab [Nugraha and Mori, 2006]. The mechanism of these events is still poorly known and providing temperature constraints for where these earthquakes occur contributes to their understanding. © Copyright 2010 by the American Geophysical Union.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Attenuation model,High temperature,Low-frequency earthquakes,P-waves,Seismic attenuation,Subducting slabs,Subduction zones,Thermal structure,Tomographic,Velocity model,Western Japan[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1029/2009GL041522[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]