利用侧扫声呐和单道地震提取海底微地貌的方法  

The Methods of Extracting Seabed Microtopography Information from Side Scan Sonar Pictures and Single-channel Seismic Profiles

作　　者：傅人康 张匡华 宋家伟 FU Renkang, ZHANG Kuanghua, SONG Jiawei(Marine Geological Survey Institute of Hainan Province, Haikou 570206 ,Chin)

机构地区：[1]海南省海洋地质调查研究院,海口570206

出　　处：《海洋开发与管理》2018年第4期109-112,共4页Ocean Development and Management

基　　金：海南省国土环境资源厅项目(HZ2015-235)

摘　　要：文章简要介绍侧扫声呐和单道地震系统的工作原理,并以海南岛南部近海海域为例,分析通过侧扫声呐图像和单道地震剖面提取沙波、沙脊、海底礁石和陡坎等海底微地貌的可行性及其过程。研究表明:沙波和海底礁石可通过对侧扫声呐图像的判读和识别,对比单道地震剖面图,直接在侧扫声呐图像上圈定;陡坎和沙脊可通过对单道地震剖面图的判读和识别,提取海底水深剖面数据制作平面剖面图,并结合潮流动力方向圈定;综合利用侧扫声呐和单道地震数据,可有效提高海底微地貌的解译精度。The working principles of side scan sonar and single-channel seismic were briefly introduced in this paper.Through the study on seabed microtopography with side scan sonar pictures and single-channel seismic profiles in shallow sea of southern Hainan Island,the process of extracting information of seabed microtopography（including sand waves,sand ridges,reefs,scarps,and so on）from Side Scan Sonar pictures and Single-channel seismic profiles were demonstrated and the feasibility of the method was proved.It was found that sand waves and reefs could be identified on Side Scan Sonar pictures and their range could be confirmed by comprehensive analysis of Side Scan Sonar pictures and Single-channel seismic profiles,whereas sand ridges and scarps could be interpreted and identified on Single-channel seismic profiles and their range can be confirmed by comprehensive analysis of Single-channel seismic profiles,plane profile could be produced with the extracted ocean bottom water depth profile data,combined with the power flow direction.Studies showed that analyzing seabed microtopography with side scan sonar pictures and singlechannel seismic profiles in the same time is an effective way to improve the accuracy of the inter-pretation.

关 键 词：海底微地貌 侧扫声呐 单道地震 海洋地质 海洋调查 

分 类 号：P737.2[天文地球—海洋地质] TH766[天文地球—海洋科学]