A magnetotelluric image at subduction zone: Taiwan

Chow Son Chen, Chien Chih Chen, Keyson Chou

研究成果: 會議貢獻類型會議論文同行評審

1 引文 斯高帕斯(Scopus)


As part of an integrated project to map the 3-D structures beneath Taiwan, which is a typical example of arccontinental collision, broadband magnetotelluric (MT) data have been collected and analyzed at 20 sites uniformly covering the entire Taiwan. The determinant response of impedance tensor was calculated for inversion and the Occam's inversion which could generate smooth model was used for interpreting MT data at each site. A north dipping conductor, at a depth of approximately 10-20 km with resistivities lower than 100 ohm-m beneath the Island of Taiwan is undoubtedly the most significant feature obtained in this study. The depth are correlated well with the inferred depth of dehydration reactions from Suppe (1981) and the top of the aseismic lower crust observed by Wang (1994). We infer that this dipping conductor is associated with the upper surface of the subducting Philippine Sea plate. This finding also provides one more example to support the argument that conductivity anomalies are commonly associated with plate subduction.

出版狀態已出版 - 1997
事件1997 Society of Exploration Geophysicists Annual Meeting, SEG 1997 - Dallas, United States
持續時間: 2 11月 19977 11月 1997


???event.eventtypes.event.conference???1997 Society of Exploration Geophysicists Annual Meeting, SEG 1997
國家/地區United States


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