Interpolated digital elevation model (DEM) of the nearshore around Ship, Horn, and Petit Bois Islands, Mississippi: 2016

To characterize coastal change, historical maps and complementary records were compiled including: topographic sheets (T-sheets), hydrographic sheets (H-sheets, smooth sheets), shorelines, and bathymetric soundings surrounding the Mississippi (MS) barrier islands over several time periods (1916-1920, 2008-2009 and 2016). One goal of this work was to create a time-series of bathymetric change maps around the islands. Datasets include 1916 through 1920 soundings collected by the United States Coast and Geodetic Survey as downloaded H-sheets and some digitized soundings from the National Oceanic and Atmospheric Administration (NOAA), 2008 to 2009 soundings collected by the United States Geological Survey St. Petersburg and Woods Hole Coastal and Marine Science Center (USGS SPCMSC and WHCMSC, respectively), and 2016 soundings collected by the USGS SPCMSC in the nearshore environment of Ship, Horn, and Petit Bois Islands. This USGS data release includes three digital elevation models (DEMs) for 1916 to 1920, 2008 to 2009, and 2016; however, this metadata file pertains to the 2016 DEM (2016_MS_NAD83NAVD88g12B_50m.tif). This work was completed in cooperation with the United States Army Corps of Engineers (Mobile, Alabama) and the National Park Service as part of the Mississippi Coastal Improvements Program (MsCIP).

为表征海岸变化，本研究汇编了1916-1920年、2008-2009年及2016年多个时段下密西西比障壁岛周边的历史地图与配套记录，涵盖地形图（topographic sheets, T-sheets）、水文图（hydrographic sheets, H-sheets，又称平滑图）、岸线数据及水深测深资料。
本研究的核心目标之一是构建该岛周边水深变化的时间序列地图。
本次公开的数据集包含以下内容：由美国海岸与大地测量局（United States Coast and Geodetic Survey）采集的1916-1920年测深数据（源自下载的H-sheets及美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）提供的部分数字化测深数据）；由美国地质调查局圣彼得斯堡海岸与海洋科学中心（USGS SPCMSC）及伍兹霍尔海岸与海洋科学中心（USGS WHCMSC）采集的2008-2009年测深数据；以及由USGS SPCMSC在希普岛（Ship Island）、霍恩岛（Horn Island）与珀蒂博伊斯岛（Petit Bois Island）近岸环境采集的2016年测深数据。
本次美国地质调查局的数据发布包含3套分别对应1916-1920年、2008-2009年及2016年的数字高程模型（digital elevation models, DEMs），但本元数据文件仅针对2016年数字高程模型：2016_MS_NAD83NAVD88g12B_50m.tif。
本研究与美国陆军工程兵团（阿拉巴马州莫比尔分部）及国家公园管理局合作完成，隶属于密西西比海岸改善计划（Mississippi Coastal Improvements Program, MsCIP）。