Double differential tomography of the Tengchong volcano and adjacent areas

doi:10.6038/cjg2019M0269

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Double differential tomography of the Tengchong volcano and adjacent areas
	Hua YuLin 1,2,3; Lu Yan 1,2,3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2019-08-01
卷号	62 期号:8 页码:2982-2990
关键词	Double differential tomography Tengchong volcanic area Magma chamber
ISSN号	0001-5733
DOI	10.6038/cjg2019M0269
英文摘要	Based on 7923 P-wave arrivals recorded by 15 stations of the seismic network, this work relocated earthquakes and imaged the velocity structure beneath the Tengchong volcano and adjacent areas by the double differential tomography. Research found the existence of low P-wave velocity zones in the crust beneath the Tengchong volcano, more than 15% lower than the average velocity of the entire study area. Large-scale low-velocity anomalies are present in the upper mantle. We infer that there are hot material upwelling from the mantle and intrusion into the crust beneath the volcanic area. Thermal material is stored in the form of magma chambers and magma channels may exist between the magma chambers in the crust. The earthquakes after relocation are more concentrated, and their distribution characteristics are in good agreement with the fault structure, implying the faults in this area are active. The high-resolution 3D P-wave tomography results of this study provide new evidence for further understanding of the characteristics of magma storage in volcanic regions and the relationship between earthquake distribution and regional tectonics.
WOS关键词	CRUSTAL VELOCITY STRUCTURE ; STRUCTURE BENEATH ; SICHUAN-YUNNAN ; WESTERN YUNNAN ; HAYWARD FAULT ; DYNAMICS ; CHINA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000480300600015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93345]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Lu Yan
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hua YuLin,Lu Yan. Double differential tomography of the Tengchong volcano and adjacent areas[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(8):2982-2990.
APA	Hua YuLin,&Lu Yan.(2019).Double differential tomography of the Tengchong volcano and adjacent areas.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(8),2982-2990.
MLA	Hua YuLin,et al."Double differential tomography of the Tengchong volcano and adjacent areas".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.8(2019):2982-2990.