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首页> 外文期刊>Journal of oceanography >Least-Squares Estimation of Bottom Topography Using Horizontal Velocity Measurements in the Tsushima/Korea Straits
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Least-Squares Estimation of Bottom Topography Using Horizontal Velocity Measurements in the Tsushima/Korea Straits

机译:对马/韩国海峡海底地形的最小二乘估计

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Several bathymetric data sets are compared and assessed with constraints of an ocean current model and velocity observations. The root-mean-square (rms) differences among the data sets reach 20 m in the shallow Tsushima/Korea Straits. The numerical experiments to simulate the Tsushima Warm Current are performed using four different topography data sets. The JTOPO1 data (MIRC, 2003) give the smallest rms difference to long-term horizontal velocity observations. Several least-squares combinations of the topography data sets are then sought to minimize the rms difference between the observed and modeled barotropic velocities. Most of the data sets reveal a large bias of 30–60 m at the Western Channel compared to independent sounding depths
机译:在海流模型和速度观测的约束条件下,对几个测深数据集进行了比较和评估。在浅对马/韩国海峡,数据集之间的均方根(rms)差异达到20 m。使用四个不同的地形数据集进行了模拟对马暖流的数值实验。 JTOPO1数据(MIRC,2003年)为长期水平速度观测提供了最小的均方根差。然后寻求地形数据集的几种最小二乘组合,以最小化所观测到的和模型化正压速度之间的均方根差。与独立的探测深度相比,大多数数据集在西海峡显示出30-60 m的大偏差。

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