JOINT INVERSION OF GRAVITY, MAGNETIC, SEISMIC DATA OF THE CFT LINE ACROSS THE SOUTHWEST SUB-BASIN AND ADJACENT AREAS AND ITS APPLICATION

DU Wenbo; QIU Yan; WANG Jun; NIE Xin; WANG Yanlin; HUANG Wenkai

doi:10.16028/j.1009-2722.2021.006

2021 Vol. 37, No. 12

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Article navigation > Marine Geology Frontiers > 2021 > 37(12): 38-48

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DU Wenbo, QIU Yan, WANG Jun, NIE Xin, WANG Yanlin, HUANG Wenkai. JOINT INVERSION OF GRAVITY, MAGNETIC, SEISMIC DATA OF THE CFT LINE ACROSS THE SOUTHWEST SUB-BASIN AND ADJACENT AREAS AND ITS APPLICATION[J]. Marine Geology Frontiers, 2021, 37(12): 38-48. doi: 10.16028/j.1009-2722.2021.006

Citation:

DU Wenbo, QIU Yan, WANG Jun, NIE Xin, WANG Yanlin, HUANG Wenkai. JOINT INVERSION OF GRAVITY, MAGNETIC, SEISMIC DATA OF THE CFT LINE ACROSS THE SOUTHWEST SUB-BASIN AND ADJACENT AREAS AND ITS APPLICATION[J]. Marine Geology Frontiers, 2021, 37(12): 38-48. doi: 10.16028/j.1009-2722.2021.006

JOINT INVERSION OF GRAVITY, MAGNETIC, SEISMIC DATA OF THE CFT LINE ACROSS THE SOUTHWEST SUB-BASIN AND ADJACENT AREAS AND ITS APPLICATION

1.
Key Laboratory of Marine Mineral Resources of Ministry of Natural Resources, Guangzhou Marine Geological Survey, China Geology Survey, Guangzhou 510075, China
2.
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
3.
Key Laboratory of Ocean and Marginal Sea Geology, CAS, South China Sea Institute of Oceanology, Guangzhou 510301, China
4.
Innovation Academy of South China Sea Ecology and Environmental Engineering, CAS, Guangzhou 510301, China

More Information

Corresponding author: QIU Yan, zqiuyan60@163.com

Received Date: 05 January 2021

Publish Date: 28 December 2021

Abstract

Abstract

Joint inversion of the 1093 km of integrated geophysical detecting section (CFT) is made across the southwestern sub-basin of the South China Sea and the two sides of the continental margin. The data involved in the inversion includes the ocean bottom seismograph (OBS) data, the long-arranged multi-channel seismic profiles, and the gravity and magnetic profiles. Based on the results of joint inversion and segmented interpretation, many pre-Cenozoic residual sedimentary deposits and multiple periods of magmatic activities are observed. The crustal structure of the South China Sea is quite complex, which includes continental crust, thinned continental crust, continental-oceanic transitional crust and ocean crust. The high-speed layer under the crust is widely distributed. The observations prove that the joint inversion of gravity, magnetism, and seismic data is an effective tool to study the structural characteristics of the sea and deep crustal structures.
- CFT geophysical line /
- joint inversion of gravity /
- crustal structure /
- Southwestern Sub-Basin

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References

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