Influence of the source shift in marine controlled-source electromagnetic

摘要：

Incentives in the energy demand, the marine controlled-source electromagnetic method has been developing rapidly in the past few years. While marine controlled-source electromagnetic data collection, the transmitter dipole source is dragged behind the prospect ship in seawater. The sea waves and undercurrents may make the source position departure its design position, and so inevitably influence the observation.By modeling the mCSEM response of marine 1D model, analysing the responses of different depths and different diatances lateral shift of source dipole, the results show that the Ex amplitude and phase of mCSEM responds are little impacted by a shift less than 50m ,no matter the shift along depth or along lateral. The lateral shift of dipole source influences the observations in the small offset scope, but the observations in large offset scope has almost no impact.

关键词： marine controlled-source electromagnetic transmit dipole source shift modeling

作者: Wenbo Zhang Wenbo Wei Ming Deng

作者单位: Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074,China School of Geophysics & Information Technology, China University of Geosciences (Beijing),Beijing, 10

会议类型: 国际会议

会议名称: The 4th International Conference on Environmental and Engineering Geophysics(第四届环境与工程地球物理国际会议 ICEEG2010)

会议地点: 成都

会议语种:英文

页码: 422-425

在线出版日期: 2010-06-14（万方平台首次上网日期，不代表论文的发表时间）