A Simulation Study on the Thermal Structure of Manila Trench Subduction Zone
详细信息
- 责任者：Gao Xiang (Key Laboratory of Computational Geodynamics ; Graduate University of Chinese Academy of Sciences ; Beijing 100049 ; China) ; Zhang Jian
- 刊名：Chinese Journal of Geophysics
- 出版年：2012
- 卷期：55(1)
- 关键词：俯冲带 ; subduction zones ; 马尼拉海沟 ; Manila Trench
- 页码：p.117-125
- 图表：8 illus., 2 tables, 36 refs.
- 分类号：0300
- 出版序号：20130019
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
In this paper, based on geological and geophysical conditions,we construct two thermal models across the East Volcano Chain (EVC) and the West Volcano Chain (WVC) along the Manila trench subduction zone and do the thermal simulations using finite-element numerical method. The results show that, at 100 km depth, at the slab interface with frictional and shear heating the temperature is 865 ℃,about 95 ℃ warmer than temperature without frictional and shear heating. At slab surface, the partial melting and dehydration may mainly occur at about 100 km depth, which is well associated to the observed location of the volcanic activity.
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