EasyGSH-DB: Bathymetry 2012

Definition: “Bathymetry” means the measurement of the topographical shape of the sole of a water body. The term is also often used — analogous to the word “topography” — synonymous with the shape of the water sole. Waters in this context are seas, rivers or closed inland waters. As part of the EasyGSH project, bathymetric data sets are those that represent the height distribution in the German Bay, including the estuaries of Ems, Weser and Elbe. Through morphological activities of the water soil, such a bathymetric model is only valid for a certain period of time or time. Data generation: The basis for bathymetric products are gridded bathymetric models, which are created using the Functional Ground Model, a data-based hindcast simulation model, via spatial-time interpolation methods from a database of sea and land surveys of various data types. For each year from 1996 to inclusive 2016, a gridded bathymetric model in 10 m resolution for the German Bay and in addition in 250 m resolution for the Exclusive Economic Zone for the year 1996 is produced. Product: One 10 m grid of the German Bay valid on 01.07. for the years from 1996 to 2016, with each grid node lying down the height. 250 m grid of the Exclusive Economic Zone (1996). The product is provided in GeoTiff and Shapefile format. English Download: The data for download can be found under References, where the data can be downloaded directly or via the web page redirection to the EasyGSH-DB portal. For further information, please refer to the download portal (https://mdi-de.baw.de/easygsh/EasyEN_index.html).定义： 水深测量（Bathymetry）指对水体底部地形形态的测量。该术语常类比于“地形（topography）”一词，作为水体底部形态的同义词使用。此语境下的水体涵盖海洋、河流或封闭内陆水域。作为EasyGSH项目的组成部分，水深测量数据集指表征德国湾（包含埃姆斯河、威悉河与易北河河口区域）底部高程分布的数据集。由于水底地貌活动的影响，此类水深模型仅在特定时段内有效。 数据生成： 水深产品的基础为网格化水深模型，此类模型基于功能地面模型（Functional Ground Model）——一种基于数据的后报模拟模型——通过空间-时间插值方法，从多类型海陆测量数据库中生成。针对1996年至2016年的每一年，均生成德国湾分辨率为10米的网格化水深模型；此外，1996年专属经济区（Exclusive Economic Zone）的网格化水深模型分辨率为250米。 产品： 1996年至2016年每年7月1日生效的德国湾10米分辨率网格数据，每个网格节点均记录有底部高程值。 1996年专属经济区250米分辨率网格数据。 该产品以GeoTiff与Shapefile格式提供。 下载： 可下载数据详见参考文献，用户可直接下载数据，或通过网页重定向至EasyGSH-DB门户获取数据。 如需更多信息，请访问下载门户：https://mdi-de.baw.de/easygsh/EasyEN_index.html。