青岛崂山头海域海底滑坡的声波探测  

Sound Wave Prospecting in the Submarine Landslip in Laoshantou Sea Area of Qingdao

作　　者：张永明[1,2,3] 毕建强[1,2,3] 孙圣堂[1,2,3] 石晓伟[1,2,3] 肖春桥[1,2,3] 

机构地区：[1]国家海洋局北海海洋工程勘察研究院,山东青岛266033 [2]青岛环海海洋工程勘察研究院,山东青岛266033 [3]山东省海洋生态环境与防灾减灾重点实验室,山东青岛266033

出　　处：《工程地球物理学报》2012年第2期170-174,共5页Chinese Journal of Engineering Geophysics

基　　金：海洋公益性行业科研专项(编号:200805063);我国近海海洋综合调查与评价专项(编号:908-01-QC12;908-01-DX12)资助

摘　　要：利用多波束测深、浅地层剖面和侧扫声纳探测资料对青岛崂山头海域侵蚀沟及海底滑坡的形态、成因进行分析讨论。全覆盖的多波束测深反映了侵蚀沟的形态特征,为分析侵蚀沟及滑坡的成因提供了依据。崂山头海底滑坡是由潮流冲蚀等外动力引起的平移滑坡。侧扫声纳清晰地反映了滑坡边界和滑塌挤压波纹,表明滑坡刚发生不久,还未被冲蚀。浅地层剖面呈现较完整的滑坡形态和结构特征,可识别出滑动体、滑动剪切面和拖曳层理等滑坡要素。结果表明高分辨率的多波束测深仪、浅地层剖面仪和侧扫声纳仪等声学设备对探测海底滑坡、分析其成因具有较好的效果,可为海洋防灾减灾,海洋工程建设提供参考依据。With data from multibeam echo sounding,shallow stratigraphic section and side scan sonar,this paper analyzes and discusses the shape and formation of eroded channel and submarine landslide in Laoshantou sea area of Qingdao.Multibeam echo sounding presents the shape of eroded channel and provides data for analyzing the formation of eroded channel and landslide.The erosion of the tide current results in the formation of translated submarine landslide.Side scan sonar clearly reflects the boundary and extruded ripple of landslip,which shows the landslip happened in a shot time and has not been eroded off.Shallow stratigraphic section presents the integrated shape and structure of the landslip.Slip body,cutting surface and dragged stratum can be identified from shallow stratigraphic section.The results indicate that high resolution multi beam sounding,shallow stratigraphic section and side scan sonar have a good result in prospecting submarine landslide and analyzing its formation,which can offer reference for disaster prevention and engineer construction in the ocean.

关 键 词：侵蚀沟 海底滑坡 多波束测深 浅地层剖面 侧扫声纳 

分 类 号：P631.4[天文地球—地质矿产勘探]