基于潮位预测的潮汐校正方法在高分辨率单道地震调查中的应用  

Application of tidal correction method based on tide prediction in high resolution single-channel seismic survey

作　　者：张浩浩 李丽青[1,2,3] 张宝金 荣骏召[1,2,3] 刘胜旋 张冉 ZHANG Haohao;LI Liqing;ZHANG Baojin;RONG Junzhao;LIU Shengxuan;ZHANG Ran(Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510760,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China;National Engineering Research Center for Gas Hydrate Exploration and Development,Guangzhou 511458,China;Henan Geophysical Prospecting and Remote Sensing Center,Zhengzhou 450000,China)

机构地区：[1]中国地质调查局广州海洋地质调查局,广州510760 [2]南方海洋科学与工程广东省实验室(广州),广州511458 [3]天然气水合物勘察开发国家工程研究中心,广州511458 [4]河南省航空物探遥感中心,郑州450000

出　　处：《海洋地质前沿》2022年第10期94-100,共7页Marine Geology Frontiers

基　　金：国家重点研发计划《深海关键技术与装备》项目“天然气水合物高精度三维地震采集脚印压制技术”(2017YFC030740504);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项“南海深海盆区莫霍面地震反射空间分布研究”(GML2019ZD0207);中国地质调查局项目“南海重点海域天然气水合物调查评价”(DD20221705)。

摘　　要：单道地震探测技术在海洋勘探各领域应用广泛,潮汐变化对高分辨率单道地震资料的质量有很大影响,尤其是对采集时间跨度较大的资料,在测线交点处存在严重的剖面不闭合现象。利用潮汐预测方法对高分辨率单道地震进行了潮汐校正,经过校正后的资料品质明显得到提升。通过对比不同测线交点处的剖面情况,剖面不闭合现象得到改善,同相轴的对应关系更好。实际应用结果表明,基于潮位预测的潮汐校正方法在高分辨率单道地震调查中的应用有效可靠。Single channel seismic detection technology is widely used in various fields of marine exploration.Tidal variation has a significant effect on the quality of high-resolution single-channel seismic data. Data with a large acquisition time span often have non-closure of profile at the intersection of survey line. A tide prediction method was used to correct high-resolution single-channel seismic data and the data quality were improved obviously. By comparing profiles at intersection of different survey lines, the non-closure problem was eliminated, and the corresponding events become more continuous. Real case application showed that the tidal correction method based on tide prediction was effective and reliable in high-resolution single-channel seismic survey.

关 键 词：高分辨率 单道地震 潮汐校正 同相轴 潮位预测 

分 类 号：P736[天文地球—海洋地质] P631.4[天文地球—海洋科学]