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海洋反射地震通常用于调查、研究海底地质构造,勘探油气与天然气水合物资源.近期研究表明多道反射地震方法也可以对水柱的热盐细结构成像.中尺度涡与内波是重要的物理海洋现象,但是常规的物理海洋调查是在间隔若干公里的离散测站上进行的,水平分辨率较低,因此对中尺度涡的结构与内波的横向分布了解较差.本文利用在大西洋东部、南海采集的地震数据给出了低频反射地震可以对中尺度涡与内波清晰成像的新的证据.反射地震方法较传统海洋观测手段,具有明显的优势,主要体现在高的水平分辨率和短时间内对整个海水剖面进行成像方面.从地震剖面上,能够清楚地观测到中尺度涡、内波造成的反射特征变化,从而有助于改进对能量在不同尺度的海水运动之间传递过程的认识.
Ocean reflection seismic is usually used to investigate and study the submarine geological structure and to explore the resources of oil and gas and gas hydrate.Recent studies show that multi-channel reflection seismic method can also image thermal salt structure of water column.Middle-scale vortex and internal wave are important physical However, the conventional physical-ocean survey is carried out at several stations separated by several kilometers and has a low horizontal resolution, so the understanding of the lateral distribution of mesoscale vortex structures and internal waves is poorly understood. , The seismic data collected in the South China Sea provide new evidence that low-frequency reflection seismic imaging can clearly show the mesoscale vortex and internal wave.The reflected seismic method has obvious advantages over the traditional ocean observation methods, which are mainly reflected in the high horizontal resolution and The entire seawater profile can be imaged in a short period of time.From the seismic profile, the changes of the reflection characteristics caused by the mesoscale vortex and the internal wave can be clearly observed, which helps to improve the transfer of energy between seawater with different scales Understanding.