Historical bathymetry soundings between 1916 and 1920 around the Mississippi and Alabama barrier islands

In order 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 and Alabama (MSAL) barrier islands. One goal of this work was to create a time-series of bathymetric change maps around the islands between 1916 and 2016.为表征海岸变化特征，本研究整理了密西西比与阿拉巴马（MSAL）障壁岛周边的历史地图及补充记录，涵盖地形图图幅（T-sheets）、水文图图幅（H-sheets，又称平滑图幅）、海岸线数据与水深测深数据。本研究的目标之一为构建1916年至2016年间该群岛周边的水深变化图时间序列。