浅地层剖面与测深数据综合成图法在舟山大陆连岛工程中的应用  

Geologic profile charting by integrating sub-bottom profile and bathymetric data

作　　者：丁维凤[1] 刘奎[1] 韩富江[1] 陆晓鸣[1] 钱万民[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：《海洋学研究》2009年第4期63-71,共9页Journal of Marine Sciences

基　　金：中国海洋大学海底科学与探测技术教育部重点实验室资助项目(2008-05);国家海洋局第二海洋研究所基本科研业务费专项资助项目(SZ0812;JT0901)

摘　　要：利用2006年舟山市大陆连岛工程(三期)岱山跨海大桥工程物探调查资料,分析、讨论了海底水深剖面图的生成、浅地层剖面资料解释、时深转换及其地质剖面图生成过程中存在的问题,提出了实际调查航迹的坐标投影、浅地层剖面反射层位人机交互解释拾取、时深转换层速度的输入等方法,并应用这些方法快速有效地生成了工程调查数据地质剖面图。It＇s very important for hydrograph surveying synchronously with sub-bottom exploring for ocean geological investigation.When charting the final geological profile there are some troublesome problems to be solved.First,the actual navigation＇s track is departure from designed lines when spot surveying,and the sub-bottom profile＇s different interpretation method make the different interpreted result＇s precision;Second,when time-depth conversion we must conside the different stratums＇ velocity because of the sonic different propagating velocity in different stratums,while existing commercial softs treat this problem with one velocity;Third,when charting the geological profile,we must integrate the hydrograph＇s data with the stratums＇ thicknesses coming from sub-bottom profile.Based on the actual investigated data,the author analyses above problem＇s producing reason,and take valid methods to solve these problems.To solve the first problem,author use the ideal commercial soft to make fastly the hydrograph profile and bathymetric data along the planned surveying line,while developed myself a independent soft to interactive interpreting the sub-bottom profile,this soft offers event mark location picking and picking randomly each ping and line picking and auto picking etc.To solve the second problem,author offers a soft interface to define different stratum＇s velocity and the soft computes the interpreted stratum＇s thickness to seabed reflecting layer and depth using defining velocity,at last,the soft outputs each stratum＇s thickness and depth data according to user＇s defining filename.The third problem can be solved with integrating the output stratum＇s thickness with bathymetric data,but before integrating the two data,the picked sub-bottom＇s track position must be projected to survey planned line,otherwise,there is position error between picked sub-bottom＇s track position and hydrograph profile＇s position.With all of the above methods,we interpretes fastly the sub-bottom profile and prod

关 键 词：水深剖面 浅地层剖面 时深转换 地质剖面图 

分 类 号：P631.4[天文地球—地质矿产勘探]