Digital 30sec Gridded Bathymetric Data of Korea Marginal Seas - KorBathy30s
Digital 30sec Gridded Bathymetric Data of Korea Marginal Seas - KorBathy30s
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韩国边缘海数字 30 秒网格测深数据 - KorBathy30s
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Seo
中科院分区：
文献类型：
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作者：
S. Seo
在韩国边缘海域，制作了间隔30秒的网格化水深数据。为了制作数据，使用了互联网上每隔1分钟更新的网格数据和国家海洋研究所（NORI） 2007年10月发布的所有数字海图。网格化数据的基准面近似为最低低潮面，水平坐标基于WGS84椭球。特别是开发的计算机程序可以直接从数字海图中采集包括深度等高线在内的所有测深数据，并将数据的UTM坐标转换为WGS84坐标，从而大大提高了数据的精度。采用插值法生成网格数据，并与已有的网格数据进行对比分析。在这种网格化的数据中，我们可以看到在以前的数据中找不到的非常详细的地形特征。
Gridded bathymetric data of 30 seconds apart in Korea marginal seas are produced. In order to make the data, both updated gridded data of 1 minute apart on internet sites and all the digital nautical charts issued by National Oceanographic Research Institute (NORI) in Oct. 2007 are used. The reference level of the gridded data is approximate level of lowest low water and the horizontal coordinates are based on the WGS84 ellipsoid. Especially a developed computer program can collect all the sounding data including depth contour directly from the digital charts and UTM coordinates of the data are converted to the WGS84 coordinates from which accuracy of data is significantly improved. An interpolation method is adopted to produce the gridded data which are compared and analyzed against the existing gridded data. In this gridded data we can see significantly detailed topographic features which could not be found in the previous data.