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地震方法在海洋天然气水合物的调查及研究过程中发挥了关键作用。截至2002年底,全球范围内已发现的116处水合物矿点中,利用地球物理探测技术推测的就有近90处。本文在详细调研国内外天然气水合物调查研究的文献资料基础上,探讨了天然气水合物地震勘查技术方法,包括单道地震、常规多道地震、高分辨率多道地震。认为海域水合物勘探方法的选择主要根据具体的地质条件、勘探目标、经费等综合条件来确定。高分辨率多道地震勘探及其特殊地震资料相关处理是未来利用地球物理方法进行水合物勘探研究的主流发展方向。
Seismic methods play a key role in the investigation and research of marine gas hydrates. As of the end of 2002, of the 116 hydrate deposits that have been discovered worldwide, nearly 90 locations have been estimated using geophysical exploration techniques. Based on the detailed investigation of the literature of gas hydrate investigation at home and abroad, this paper discusses the technical methods of gas hydrate seismic exploration, including single-channel earthquakes, conventional multi-channel earthquakes and high-resolution multi-channel earthquakes. It is considered that the selection of hydrate exploration methods in the sea area is mainly determined by comprehensive conditions such as specific geological conditions, exploration targets and funds. High-resolution multi-channel seismic exploration and its special seismic data processing is the future development of the main direction of hydrate exploration using geophysical methods.