宋海斌^1,,
陈江欣^2,3,,,
赵庆献⁴,
关永贤⁴
1. 海洋地质国家重点实验室, 同济大学海洋与地球科学学院, 上海 200092
2. 自然资源部天然气水合物重点实验室, 青岛海洋地质研究所, 青岛 266071
3. 海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 青岛 266071
4. 自然资源部海底矿产资源重点实验室, 广州海洋地质调查局, 广州 510760

基金项目: 国家自然科学基金（41576047，41606077）、全球变化与海气相互作用专项（GASI-GEOGE-05）与国家自然科学基金重大计划重点项目（91128205）资助


详细信息

作者简介: 宋海斌, 教授, 主要从事海洋地球物理与地震海洋学研究.E-mail:hbsong@tongji.edu.cn

通讯作者: 陈江欣, 男, 1987年生, 山东青岛市人, 主要从事海洋地质与地球物理研究.E-mail:jiangxin_chen@sina.com

中图分类号: P738

收稿日期:2017-07-27
修回日期:2018-08-24
上线日期:2018-09-05

Investigation and inversion of seismic oceanography dataset in the NE South China Sea

SONG HaiBin^1,,
CHEN JiangXin^2,3,,,
ZHAO QingXian⁴,
GUAN YongXian⁴
1. State KeyLaboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
2. The Key Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China
3. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
4. Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou Marine Geological Survey, Guangzhou 510760, China


More Information

Corresponding author: CHEN JiangXin,E-mail:jiangxin_chen@sina.com

MSC: P738

--> Received Date: 27 July 2017
Revised Date: 24 August 2018
Available Online: 05 September 2018


摘要
摘要:通过地震海洋学联合调查航次，获得了同时采集的高分辨率多道地震数据与水文数据（XBT）联合调查数据.通过针对性处理获得了清晰的海洋水体反射地震剖面，捕捉到南海东北部次表层涡旋，证明了该调查方法的有效性.利用背景场约束反演方法得到海水的波阻抗、声速、密度、温度和盐度剖面，揭示了涡旋具有相对低速、高密、低温与高盐特征.处理和反演结果表明，在浅部和部分噪声较强和无约束反演区域，结果误差较大，可靠性较低.调查结果说明，获得较高信噪比的原始高分辨率地震资料采集技术方法、联合约束数据的获取、针对性的特殊处理方法和有效的反演方法是地震海洋学资料有效分析利用的重要保证.
关键词: 地震海洋学/
反演/
涡旋/
温盐结构/
波阻抗

Abstract:New high resolution multi-channel seismic data and hydrological data (XBT) are simultaneously obtained from the joint survey of seismic oceanography. A clear seawater seismic reflection profile, through targeted process, captures the subsurface eddies in the northeastern South China Sea, and proves the validity of this method. The impedance, sound velocity, density, temperature and salinity profiles of seawater were derived by means of background field constrained inversion method, which reveal that the eddies have characteristics of relatively low sound speed, high seawater density, low temperature and high salinity. The processing and inversion results show that in shallow water and areas with much noise or no constraints, the result may yield remarkable error and be less reliable. This survey implies that acquisition technique of high resolution seismic data with a higher signal-to-noise ratio, constraint data simultaneously obtained, special processing method and effective inversion method are guarantee of effective analysis of seismic oceanography dataset.
Key words:Seismic oceanography/
Inversion/
Eddy/
Thermohaline structure/
Impedance



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