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Model analysis combining gravity and seismic data with the response of inhomogeneous mantle
Liu Kang1,2,3; Hao TianYao1,2,3; Yang Hui4; Wen BaiHong4; He EnYuan5
2018-10-01
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号61期号:10页码:3903-3916
摘要This paper proposes a new strategy for conducting model analysis with gravity anomaly and seismic data, in which the gravity response of inhomogeneous mantle should be taken into account. Model calculations and a case study in the Sichuan basin demonstrate this strategy a good potential to make the gravity data processing and inversion more consistent with the actual geological conditions. By collecting the comprehensive geophysical research results in many regions around the world, as well as the corresponding deep mantle structure, we find the lateral inhomogeneity of the mantle is widely distributed in the petroliferous basins, continental margins, ocean-continent transitions and other geological sites of general interest. However, in many joint studies based on gravity and seismic data, model analysis is usually performed within the crust. Although it simplifies the difficulty of the model analysis, the gravity anomaly caused by deep earth inhomogeneity should have been considered, otherwise the inverted density structure and interpretations may deviate the actual geological conditions. Therefore, based on the 2D forward modeling, this paper evaluates the quantitative effect of inhomogeneous mantle on Bouguer anomaly. Moreover, in a case study of the Sichuan basin, the results of the 2. 5D joint simulation taking into account the inhomogeneous mantle are obviously better than those of following the homogeneous mantle hypothesis.
关键词Integrated geophysics Inhomogeneous mantle 2. 5D model analysis Gravity anomaly separation Seismic data Sichuan basin
DOI10.6038/cjg2018L0664
关键词[WOS]SOUTH CHINA SEA ; WAVE VELOCITY STRUCTURE ; DEEP-CRUSTAL STRUCTURE ; TECTONIC IMPLICATIONS ; ANOMALY SEPARATION ; SICHUAN BASIN ; GEOLOGICAL IMPLICATIONS ; CONTINENTAL-MARGIN ; DENSITY STRUCTURE ; ADJACENT AREAS
语种英语
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000447958300002
出版者SCIENCE PRESS
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89202
专题油气资源研究院重点实验室
通讯作者Hao TianYao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, 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
4.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
5.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
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GB/T 7714
Liu Kang,Hao TianYao,Yang Hui,et al. Model analysis combining gravity and seismic data with the response of inhomogeneous mantle[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(10):3903-3916.
APA Liu Kang,Hao TianYao,Yang Hui,Wen BaiHong,&He EnYuan.(2018).Model analysis combining gravity and seismic data with the response of inhomogeneous mantle.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(10),3903-3916.
MLA Liu Kang,et al."Model analysis combining gravity and seismic data with the response of inhomogeneous mantle".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.10(2018):3903-3916.
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