王伟,,
林牧,
陈威,
刘刚
中国地震局地震研究所, 地震大地测量重点实验室, 武汉 430071
基金项目: 国家自然科学基金（41731071，41874018）资助
详细信息
作者简介: 乔学军, 男, 研究员, 主要从事地震大地测量研究.E-mail: qiaoxuejun@gmail.com
通讯作者: 王伟, 男, 副研究员, 研究方向为GNSS地壳形变监测与地球动力学.E-mail: wangweigps@126.com
中图分类号: P228收稿日期:2021-02-01
修回日期:2021-06-25
上线日期:2021-12-10
Current situation and enlightenment of seafloor crustal deformation monitoring
QIAO XueJun,WANG Wei,,
LIN Mu,
CHEN Wei,
LIU Gang
Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, China
More Information
Corresponding author: WANG Wei,E-mail:wangweigps@126.com
MSC: P228--> Received Date: 01 February 2021
Revised Date: 25 June 2021
Available Online: 10 December 2021
摘要
摘要:海底地壳形变监测对研究洋中脊扩展、火山、海洋板块运动及俯冲带地震活动等具有重要作用，其中GNSS定位与声呐测距技术（GNSS-A）是海底地壳形变监测的主要手段，经过30多年的发展，目前GNSS-A的精度达亚厘米级，可以满足很多海底构造形变的监测需求.我国虽然在大陆地壳形变监测与研究方面已达到国际水平，但在海底地壳形变监测方面与国外相比还存在一定差距，我国海岸线长达3.2万公里，沿海地区的大型活动断裂具有发生大震的风险，如横穿渤海的郯庐断裂带、东南沿海的滨海断裂带都曾发生过大震，因此开展海底地壳形变监测及相关研究势在必行.本文基于GNSS-A的系统组成与工作原理，在总结国内外研究现状的基础上，梳理了关键技术，并结合我国沿海主要活动断裂与地震活动性特点，提出了我国利用GNSS-A技术开展海底地壳形变监测的建议.
关键词: GNSS声呐测距/
海底地壳形变/
近海活动断裂/
地震
Abstract:Seafloor crustal deformation monitoring plays an important role in studying the expansion of mid-ocean ridges,volcanoes,ocean plate movements,and seismic activities of subduction zones. GNSS positioning and acoustic ranging technology (GNSS-A) is the main method of seafloor crustal deformation monitoring. After more than 30 years of development,the accuracy of GNSS-A can reaches sub-centimeter level at present,which can meet the needs of many seafloor deformations monitoring and tectonics investigation. China has achieved the international level in continental crustal deformation monitoring and researches,but there is still a certain gap in seafloor crustal deformation monitoring compared with some foreign countries. The coastline of China is 32000 kilometers long and large-scale active faults in coastal areas are at risk of strong earthquakes. For example,the Tanlu Fault that crosses the Bohai Sea and the Binhai Fault on the southeast coast have all experienced large earthquakes. Therefore,it is necessary to carry out seafloor crustal deformation monitoring and related researches in China. Based on the system composition and observation principles of GNSS-A,this paper summarizes the key technologies on the basis of the research status at home and abroad. Considering the distribution of main active faults and seismicity in the coastal areas of China,a strategy to monitor the seafloor crustal deformation using GNSS-A is proposed.
Key words:GNSS-A/
Seafloor crustal deformation/
Offshore active faults/
Earthquake
PDF全文下载地址:
http://www.geophy.cn/data/article/export-pdf?id=67ceaf4e-52c4-4166-8905-0dc7db11db07
