SCSIO OpenIR  > 中科院边缘海地质重点实验室
Teleseismic P-wave traveltime tomography for the Leigiong volcano and Cathaysia block
Lu, ZY; Qiu, XL; Ma, XJ; Fang, LH; 154471897@qq.com; xlqiu@scsio.ac.cn
2018
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
卷号60期号:12页码:4569-4579
摘要We obtained 18968 reliable P wave relative traveltime residuals by adaptive stacking technique based on waveform cross-correlation of 256 distant earthquake records. The teleseismic waveform data were recorded by 94 permanent seismic stations belonging to seismic networks of Guangdong and neighboring provinces. The P wave velocity structure beneath the Leiqiong volcano and Cathaysia block down to 450 km depth was determined by the Fast Marching Teleseismic Tomography (FMTT). The results show an obvious low-velocity anomaly beneath the Leiqiong volcano from 100 km to 450 km depth. This low-velocity anomaly extends to the Cathaysia block with depth increasing. It is suggested that this low-velocity anomaly is caused by the upwelling of thermal materials of the Hainan plume, and the Leigiong volcano is an intraplate hot spot, which is consistent with previous results of body-wave tomography and receiver function studies. It is also inferred that the Hainan plume dips to the northeast and probably extends to 450 km depth from the pattern of the low-velocity anomalies. The low-velocity anomalies beneath the Cathaysia block is likely produced by the northeastward erosion of upwelling hot materials of the Hainan plume. The results may also imply that the lithospheric thickness of the study area tends to be thinner from the land to the sea.
部门归属[Lu Zuo-Yong; Qiu Xue-Lin] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Lu Zuo-Yong; Ma Xiao-Jing] Guangdong Earthquake Agcy, China Earthquake Adm, Key Lab Earthquake Monitoring & Disaster Mitigat, Guangzhou 510070, Guangdong, Peoples R China; [Fang Li-Hua] China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China; [Lu Zuo-Yong; Qiu Xue-Lin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
学科领域Geochemistry & Geophysics
关键词[WOS]Leigiong volcano ; Hainan plume ; Cathaysia block ; 3D velocity structure ; Seismic tomography
资助项目MSG
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17169
专题中科院边缘海地质重点实验室
通讯作者154471897@qq.com; xlqiu@scsio.ac.cn
推荐引用方式
GB/T 7714
Lu, ZY,Qiu, XL,Ma, XJ,et al. Teleseismic P-wave traveltime tomography for the Leigiong volcano and Cathaysia block[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,60(12):4569-4579.
APA Lu, ZY,Qiu, XL,Ma, XJ,Fang, LH,154471897@qq.com,&xlqiu@scsio.ac.cn.(2018).Teleseismic P-wave traveltime tomography for the Leigiong volcano and Cathaysia block.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(12),4569-4579.
MLA Lu, ZY,et al."Teleseismic P-wave traveltime tomography for the Leigiong volcano and Cathaysia block".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.12(2018):4569-4579.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
雷琼火山与华夏块体的远震P波走时成像.p(4553KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。