摘要
潮汐对海上地震资料的质量影响较大,以往是用水文站的潮汐资料进行潮汐校正,精度较低。在南海乐东地区高分辨率三维地震资料采集和处理中,利用SkyFixXP定位系统实时测量地震船GPS天线点大地高程,通过高程转换求出地震资料采集过程中实时的潮汐值,并对地震资料进行潮汐校正,使地震资料的质量得到明显改善,特别是提高了浅层地震资料的分辨率和信噪比。
The tide has significant impacts on the quality of marine seismic data, and in the past the tide correction of the data is not very accurate because of using the tide data from hydrometric stations. During the 3D seismic acquisition in Ledong area, South China Sea, SkyFix XP positioning sys-tern was used to measure real-time geodetic altitude of GPS antenna point for the seismic vessel, and then the real-time tide data during the seismic acquisition was calculated by altitude transformation. Using these tide data, the seismic data is corrected, making its quality to be improved obviously, especially the resolution and signal to noise ratio of the shallow seismic data.
出处
《中国海上油气》
CAS
2007年第6期377-380,386,共5页
China Offshore Oil and Gas
关键词
SkyFix
XP
潮汐校正
大地高程
海拔高程
高分辨率三维地震
SkyFix XP
tide correction
geodeticaltitude
altitude above sea-level
3D seismic datawith high resolution
