| 西南次海盆及邻区CFT测线重磁震联合反演及其应用 |
| |
| 引用本文： | 杜文波, 邱燕, 汪俊, 聂鑫, 王彦林, 黄文凯. 西南次海盆及邻区CFT测线重磁震联合反演及其应用[J]. 海洋地质前沿, 2021, 37(12): 38-48. doi: 10.16028/j.1009-2722.2021.006 |
| |
| 作者姓名： | 杜文波 邱燕 汪俊 聂鑫 王彦林 黄文凯 |
| |
| 作者单位： | 1.自然资源部海底矿产资源重点实验室，中国地质调查局广州海洋地质调查局，广州 510075; 2.南方海洋科学与工程广东省实验室（广州），广州 511458; 3.中国科学院边缘海与大洋地质重点实验室，南海海洋研究所，广州 510301; 4.中国科学院南海生态环境工程创新研究院，广州 510301 |
| |
| 基金项目： | 南方海洋科学与工程广东省实验室（广州）人才团队引进重大专项（GML2019ZD0207，GML2019ZD0104）；中国地质调查局项目（DD20190627，DD20191002，DD20190209）；国家自然科学基金（U1901217，91855101，U1901214） |
| |
| 摘 要： | 对跨南海西南次海盆及两侧陆缘的1条长达1 093 km，包括海底地震仪(OBS)、长排列多道地震和测深、重力、磁力调查在内的综合地球物理探测剖面(CFT)，进行了重磁震联合反演。基于重磁震联合反演结果，在分段解译的基础上，证实本区多处发育前新生界残余沉积层并发生多期次岩浆活动，南海海域地壳结构颇为复杂，具有陆壳、减薄型陆壳、陆洋过渡壳和洋壳等地壳类型，壳下高速层分布较广。根据以上分析，重磁震数据联合反演是研究海区构造特征和深部地壳结构的重要技术手段。
|
| 关 键 词： | CFT地球物理测线 重磁震联合反演 地壳结构 西南次海盆 |
| 收稿时间： | 2021-01-05 |
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. 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 |
| |
| Authors: | DU Wenbo QIU Yan WANG Jun NIE Xin WANG Yanlin HUANG Wenkai |
| |
| Affiliation: | 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 |
| |
| 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. |
| |
| Keywords: | CFT geophysical line joint inversion of gravity crustal structure Southwestern Sub-Basin |
|
| 点击此处可从《海洋地质前沿》浏览原始摘要信息 |
|
点击此处可从《海洋地质前沿》下载全文 |
|
