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地球科学进展  2004, Vol. 19 Issue (3): 364-367    DOI: 10.11867/j.issn.1001-8166.2004.03.0364
研究论文     
长白山火山的起源和太平洋俯冲板块之间的关系
雷建设;赵大鹏
爱嫒大学地球动力学研究中心,日本松山市790-8577
THE RELATIONSHIP BETWEEN THE ORIGIN OF THE INTRAPLTE CHANGBAI VOLCANO AND THE SUBDUCTING PACIFIC SLAB
LEI Jianshe, ZHAO Dapeng
Geodynamics Research Center, Ehime University, Matsuyama 7908577, Japan
 全文: PDF(102 KB)  
摘要:

近年来,尽管不同学科通过不同手段对长白山火山进行过广泛研究,然而,目前人们对它的起源仍不清楚。利用全球地震层析成像和区域层析成像结果,综合分析了长白山火山的起源。结果表明,它的起源既不同于夏威夷等板内热点火山,也不同于日本等岛弧火山,而是一种与太平洋俯冲板块在地幔转换带内的滞留和深部脱水等过程密切相关的弧后板内火山。

关键词: 长白山火山板内火山俯冲板块地震层析成像    
Abstract:

 We used global seismic tomography and regional tomography to study the deep structure and origin of the Changbai intraplate volcano in Northeast China. Our results reveal a lowvelocity anomaly extending to 400 km with a velocity reduction of up to 4%. High velocity anomalies are visible in the mantle transition zone, and deepfocus earthquakes occur at depths down to 600 km under the region,suggesting that the subducting Pacific slab is stagnant in the mantle transition zone under Northeast Asia.These results suggest that the intraplate Changbai volcano is not a hotspot like Hawaii but a kind of backarc volcano related to the deep subduction and stagnancy of the Pacific slab under Northeast Aisa.

Key words: Changbai volcano    Intraplate volcanoes    Subducted slab    Seismic tomography.
收稿日期: 2004-04-09 出版日期: 2004-06-01
:  P315.63   
通讯作者: 雷建设(1969-),男,山西运城人,博士后,主要从事地震层析成像的理论和应用研究.     E-mail: E-mail:leijs@sci.ehime-u.ac.jp
作者简介: 雷建设(1969-),男,山西运城人,博士后,主要从事地震层析成像的理论和应用研究.E-mail:leijs@sci.ehime-u.ac.jp
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引用本文:

雷建设;赵大鹏. 长白山火山的起源和太平洋俯冲板块之间的关系[J]. 地球科学进展, 2004, 19(3): 364-367.

LEI Jianshe, ZHAO Dapeng. THE RELATIONSHIP BETWEEN THE ORIGIN OF THE INTRAPLTE CHANGBAI VOLCANO AND THE SUBDUCTING PACIFIC SLAB. Advances in Earth Science, 2004, 19(3): 364-367.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2004.03.0364        http://www.adearth.ac.cn/CN/Y2004/V19/I3/364

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