海洋数值模型常用地形数据概述

Review of topography and bathymetry data used in ocean models

在海洋领域的研究工作中,经常使用数值模型进行计算,而数值模型的运行离不开地形水深数据。目前,地形水深数据的获取主要有两种途径,一是通过实地测量得到,这往往需要大量的资金投入;第二种途径是下载国内外各家研究机构公开的数据资料,但大多数海洋界研究者可能对各种类地形数据没有全面认识,不清楚数据的优缺点和处理方法。为方便各海洋研究者对地形水深数据的应用,文中简要介绍了几种常用的公开地形水深数据,对比分析了各种数据的优缺点,并介绍了两种数据应用前的处理方法,以期为海洋数值模式计算提供参考依据。

Numerical model is often used in marine science research. The marine bathymetry data play a key role in ocean models. At present, there are two ways to obtain topography and bathymetry data. One is by field in- vestigation, which will take a large effort. The other is downloading available free data on the internet. However, some researchers may not understand the features and processing methods of topography and bathymetry data available on the intemet. In this paper, several popular used topography and ocean bathymetry data are intro- duced. Advantages and drawbacks of these data are comparatively analyzed. Two data processing methods are in- troduced to their using in the ocean models.