波形曲线特征在天然气水合物资源量研究中的地质意义  

The geological meaning of wiggled trace character in study of gas hydrates resource

作　　者：沙志彬[1] 张光学[1] 杨木壮[2] 梁金强[1] 王宏斌[1] 

机构地区：[1]广州海洋地质调查局,广州510760 [2]广州大学,广州510006

出　　处：《地球物理学进展》2006年第3期944-948,共5页Progress in Geophysics

基　　金：国家高技术研究发展计划子课题(2003AA611020/03);国家重点基础研究发展规划项目(G2000046705)联合资助

摘　　要：地震反射波形特征对判断地层中是否存在天然气水合物及其下伏游离气层具有重要指示意义。BSR波形极性与海底反射相反,它大致代表含水合物层的底界;当地层中富含水合物及下伏游离气时,其波形特征亦有明显的反映,据此可推断水合物成矿带顶界和游离气层底界的大致位置。It＇s very significant to use the wiggled character of seismic reflector to distinguish the gas hydrates and underlying free gases in the strata. BSR is the bottom of the gas hydrates zone, and the polarity of the wiggle of BSR and seafloor are reverse. If gas hydrates and free gases are existed in the strata, the wiggled character of BSR will be shown clearly, so that the position of the top of gas hydrates zone and the bottom of free-gas-bearing layer can be concluded approximately.

关 键 词：BSR 波形特征 水舍物成矿带顶界 游离气层底界 

分 类 号：P738[天文地球—海洋地质]