摘要
通过对南海北部海域浅层剖面资料的分析研究,解决了多个数据处理难点。针对SEGY数据中的坐标错误,提出从导航定位原始资料中获取相应位置数据,改写SEGY道头信息,解决了SEGY数据道头坐标错误的问题;对波形进行相应处理,提高了浅地层剖面资料的分辨率;针对浅地层剖面震源位置不准的问题,对震源位置进行了校正;对同一设计测线多次分段作业剖面进行了剖面连接等。旨在为浅地层剖面的后续综合地质解译提供理想的基础资料。
The paper studied the sub-bottom profile data processing of the northern South China Sea and solved some troublesome data processing points. It proposed a method for calibrating the wrong coordination of trace headers in SEGY data, that is to first get the position data from original database of navigation, before rewriting the trace headers′ information of SEGY. Waveform was changed to improve the resolution ratio of sub-bottom profile data. The position of seismic focus was calibrated to be precise. Different phased operation profiles of one survey line were connected, which provides basic data for follow-up comprehensive data interpretation of sub-bottom profile.
作者
曾凡祥
马金凤
徐岩
Zeng Fanxiang;Ma Jinfeng;Xu Yan(Key Laboratory of Marine Mineral Resources,Ministry of Natural Resources,Guangzhou 510075,Guangdong,China;Guangzhou Marine Geological Survey,China Geology Survey,Guangzhou 510760,Guangdong,China)
出处
《地质学刊》
CAS
2020年第4期356-361,共6页
Journal of Geology
基金
中国大洋多金属结核资源勘查项目(DY135-N2-1-02)
中国地质调查局项目(DD20191007)。
关键词
浅地层地震剖面
数据处理
剖面连接
位置校正
南海北部
sub-bottom seismic profile
data processing
profile connection
position calibration
northern South China Sea
