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Mapping the crustal structure under active volcanoes in central Tohoku, Japan using P and PmP data
Xia, SH; Zhao, DP; Qiu, XL; Nakajima, J; Matsuzawa, T; Hasegawa, A; shxia1982@yahoo.com
2007
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
卷号34期号:10页码:-
摘要[1] We present high-resolution tomographic images of the crust under the active arc volcanoes in the central part of Northeast Japan (Tohoku) determined by using arrival times of first P waves and post-critically reflected waves from the Moho discontinuity (PmP). Results of detailed resolution analyses show that the addition of PmP data can improve significantly the resolution of the lower crustal structure. After the PmP data are included in the tomographic inversion, the low-velocity (low-V) anomalies in the lower crust under the active volcanoes can be better imaged. The low-V zones are clearly visible in the entire crust beneath the volcanoes extending from the surface down to the Moho discontinuity. Arc-magma related, deep, low-frequency microearthquakes are located around the low-V zones in the lower crust under the volcanoes, which occurrence is probably associated with the movement of fluid magma under the volcanoes.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; Tohoku Univ, Grad Sch Sci, Res Ctr Predict Earthquakes & Volcan Erupt, Sendai, Miyagi 9808578, Japan; Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
学科领域Geosciences, Multidisciplinary
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000246845900005
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被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4490
专题中科院边缘海地质重点实验室
通讯作者shxia1982@yahoo.com
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Xia, SH,Zhao, DP,Qiu, XL,et al. Mapping the crustal structure under active volcanoes in central Tohoku, Japan using P and PmP data[J]. GEOPHYSICAL RESEARCH LETTERS,2007,34(10):-.
APA Xia, SH.,Zhao, DP.,Qiu, XL.,Nakajima, J.,Matsuzawa, T.,...&shxia1982@yahoo.com.(2007).Mapping the crustal structure under active volcanoes in central Tohoku, Japan using P and PmP data.GEOPHYSICAL RESEARCH LETTERS,34(10),-.
MLA Xia, SH,et al."Mapping the crustal structure under active volcanoes in central Tohoku, Japan using P and PmP data".GEOPHYSICAL RESEARCH LETTERS 34.10(2007):-.
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