海洋中尺度涡与内波的地震图像

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.

Seismic images of ocean meso-scale eddies and internal waves

Marine reflection seismics is usually used for imaging the seafloor geological structure and exploring hydrocarbon and gas hydrate resources. Recent researches have shown that multichannel seismic reflection method can also image the thermohaline fine structure in the water column. Meso-scale eddies and internal waves are important phenomena. Because conventional physical oceanographic measurements are carried out at discrete sites separated several kilometers with low lateral resolution, their lateral distribution is poorly known. This paper provides new evidence of clear seismic images of the meso-scale eddy in the eastern Atlantic Ocean and internal waves in the northeastern South China Sea. Compared with the traditional physical oceanographic methods, reflection seismology has several advantages, such as high lateral resolution and the ability of imaging a large ocean profile in short time. The change of reflection feature due to the meso-scale eddies and internal waves can be clearly imaged, which helps for better understanding of energy transfer among different scale process in the ocean.