Intertidal topography at 10m Resolution Derived from Sentinel-2 Multi-Spectral Imagery for the Bengal Delta Coastline

This repository contains the intertidal topography (e.g., digital elevation model) at 10m spatial resolution and the source-code of the toolbox used in deriving this dataset from Sentinel-2 Level-2A spectral imagery and a regional tidal model. The dataset covers the coastal Bangladesh and West Bengal located in the northern Bay of Bengal. The method and its performance is described in detail in the following paper - Khan, M.J.U.; Ansary, M.N.; Durand, F.; Testut, L.; Ishaque, M.; Calmant, S.; Krien, Y.; Islam, A.K.M.S.; Papa, F. High-Resolution Intertidal Topography from Sentinel-2 Multi-Spectral Imagery: Synergy between Remote Sensing and Numerical Modeling. Remote Sens. 2019, 11, 2888. https://doi.org/10.3390/rs11242888 The repository has the following files and directory - 1. `DEM_intertidal.dat`: This text file contains the extracted intertidal DEM as space separated x (column 1), y (column 2), z (column 3) points. The spatial location are given in longitude (x), latitude (y), and the vertical height (z) is given in meters (upward positive). 2. `pyIntertidalDEM.zip`: This compressed zip folder contains a snapshot of the toolbox (https://github.com/jamal919/pyIntertidalDEM/tree/f05de55d726fd4356f9fb8979a2cf0f42f0ec9b1) used to extract the instantaneous shorelines for the current version of the intertidal DEM. The code is also accessible in its most updated version from the github repository - https://github.com/jamal919/pyIntertidalDEM. 3. `README.txt`: This text file. The dataset is published under a Creative Commons Attribution 4.0 International license. The pyIntertidalDEM toolbox is published under a Apache License 2.0.本仓库包含空间分辨率为10米的潮间带地形数据（例如数字高程模型（Digital Elevation Model, DEM）），以及用于从Sentinel-2 Level-2A光谱影像与区域潮汐模型中推导该数据集的工具箱源代码。本数据集覆盖孟加拉湾北部的孟加拉国沿海区域与西孟加拉邦地区。 该方法及其性能细节已在以下论文中详述： Khan, M.J.U.; Ansary, M.N.; Durand, F.; Testut, L.; Ishaque, M.; Calmant, S.; Krien, Y.; Islam, A.K.M.S.; Papa, F. 基于Sentinel-2多光谱影像的高分辨率潮间带地形：遥感与数值模拟的协同应用. Remote Sens. 2019, 11, 2888. https://doi.org/10.3390/rs11242888 本仓库包含以下文件与目录： 1. `DEM_intertidal.dat`: 该文本文件以空格分隔的格式存储提取得到的潮间带数字高程模型数据，其中第1列为x（即经度）、第2列为y（即纬度）、第3列为z（即高程）。空间位置采用经度（x）与纬度（y）表示，垂直高程z的单位为米，向上为正方向。 2. `pyIntertidalDEM.zip`: 该压缩包包含本版潮间带DEM提取瞬时岸线所用工具箱的快照版本，其对应GitHub仓库地址为https://github.com/jamal919/pyIntertidalDEM/tree/f05de55d726fd4356f9fb8979a2cf0f42f0ec9b1。该代码的最新版本可从以下GitHub仓库获取：https://github.com/jamal919/pyIntertidalDEM。 3. `README.txt`: 本说明文本文件。 本数据集采用知识共享署名4.0国际许可协议（Creative Commons Attribution 4.0 International）进行发布。pyIntertidalDEM工具箱则采用Apache许可证2.0（Apache License 2.0）发布。