东海陆架典型海洋灾害地质因素及其声反射特征  

Types and acoustic reflection characteristics of geological hazard factors in the shelf of East China Sea

作　　者：刘杜娟[1] 潘国富[1] 叶银灿[1] 

机构地区：[1]国家海洋局第二海洋研究所,浙江杭州310012

出　　处：《海洋通报》2010年第6期664-668,共5页Marine Science Bulletin

基　　金：国家海洋局第二海洋研究所基本科研业务费专项资金项目(JG0906)

摘　　要：浅地层剖面探测、侧扫声纳探测、多波束测深等地球物理方法是识别海洋灾害地质因素的主要手段。根据多年来在东海陆架开展的多项海洋调查项目获得的资料,在东海陆架识别出多种海洋灾害地质因素,主要的有海底滑坡、浅层气、沙波、埋藏古河道、沙脊等,并对它们的声反射特征进行分析。各种灾害地质因素因其独特的成因机制,对海洋工程设施的影响也不同。If we want to fully recognize marine geological hazard factors,sub-bottom profiling,side scan sonar detecting,together with multi-beam bathymetry are the main choices.Because different marine geological hazard factors have different acoustic reflection characteristics,these factors can be identified richly.Based on survey data in the shelf of East China Sea for years,several important marine geological hazard factors were identified by us,including landslide,shallow gas,sand waves,buried palaeochannels,sand ridges,and erosional channels,et al.With different and special genesis mechanism,every kind of marine geological hazard factor has different influence on marine engineering facilities.

关 键 词：东海陆架 海洋灾害地质因素 声学反射特征 

分 类 号：P738[天文地球—海洋地质]