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对天然气水合物研究中与似海底反射有关的一些观点进行讨论 ,以推动天然气水合物地震研究的认识 .30年的似海底反射研究表明 ,似海底反射仍然是指示天然气水合物沉积存在的最好手段之一 .有似海底反射 ,是可以认为存在天然气水合物的 .虽然存在“游离气带速度模型”与“水合物楔速度模型” ,但似海底反射主要由天然气水合物稳定带底界下方的游离气引起 .BSR上方的天然气水合物、下方的游离气与天然气再循环和含甲烷的流体流有关 .由于天然气水合物稳定带计算控制因素难以准确确定等因素 ,似海底反射与天然气水合物稳定带底界只是近似的对应关系 .需从动态的观点考虑天然气水合物 天然气体系及其与似海底反射的关系 .
Some observations about gas-like seafloor reflections in gas hydrate studies are discussed to promote understanding of gas hydrate seismic research. 30-year resemblance to seafloor reflections suggests that seafloor-like reflections are still the best indicator of gas hydrate deposition One of the means is seafloor reflection, which is thought to be gas hydrate.Although there are “free gas velocity model” and “hydrate wedge velocity model”, sub-seafloor reflection mainly consists of the bottom of the gas hydrate stability zone Of free gas caused by gas hydrate above the BSR, the lower free gas and natural gas recirculation and methane-containing fluid flow due to the calculation of gas hydrate stability zone control factors difficult to accurately determine and other factors, like submarine reflection and natural gas hydrate The stability of the bottom boundary is only an approximate correspondence, and the relationship between the natural gas hydrate system and the seafloor reflection should be considered from a dynamic point of view.