Numerical modeling of subduction zone hydrothermal circulation: Toward understanding temperature-pressure condition of the seismogenic zone
Project/Area Number |
25800246
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Solid earth and planetary physics
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Research Institution | Tohoku University (2015) Japan Agency for Marine-Earth Science and Technology (2014) The University of Tokyo (2013) |
Principal Investigator |
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
|
Keywords | 熱水循環 / 沈み込み帯 / 日本海溝 / 南海トラフ / 数値シミュレーション / 温度構造 / 日本海港 / 熱流量 / 地殻熱流量 |
Outline of Final Research Achievements |
Seismic activity of the subduction zone is affected by the temperature structure of the subducted oceanic plate. On the seaward of the Japan Trench and the Nankai Trough, heat flow values higher than expected from the plate age have been observed. This research project aims to elucidate relationships between the heat flow and the temperature structure. Anomalous heat flow around the Japan Trench is able to explain fluid circulation in an aquifer that thickens toward the trench axis. Gradual decrease in the heat flow from the Muroto to the Kumano districts can be explained by fluid flow below the trough floor along the strike of the subduction zone.
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Report
(4 results)
Research Products
(14 results)