Multi-decadal shoreline position, water level elevation and volumetric changes in the Gallocanta Lake (NE Spain)

The dataset presents a continuous mapping of the shoreline contours in the Gallocanta Lake (NE Iberian Peninsula, Spain) along the period 1984-2020 with a sub-weekly frequency (2-5 days) together with the associated water elevation and water volume. The shorelines were obtained with subpixel accuracy by applying the extraction system SHOREX on freely-available images acquired by the satellites Sentinel-2 (sensor MSI), Landsat 5 (TM), Landsat 7 (EMT+), and Landsat 8 (OLI). At the same time, the mean elevation of the water level and the volumetric changes were respectively assigned and deduced for the same dates. This constitutes a valuable data package for robust analysis of the lake trends, as well as the response to rainfall events.

Shapefiles of the lake contour appear in vector format (WGS 1984 / UTM Zone 30N, EPSG code: 32630) containing the associated elevation and volumetric information of each date.

本数据集展示了西班牙伊比利亚半岛东北部加洛坎塔湖（Gallocanta Lake）在1984年至2020年期间的海岸线轮廓连续映射，以亚周频率（2-5天）记录，并附带相应的水位和水体积。海岸线通过在免费获取的卫星图像上应用SHOREX提取系统，以亚像素精度获得，这些图像由Sentinel-2（MSI传感器）、Landsat 5（TM）、Landsat 7（ETM+）和Landsat 8（OLI）卫星获取。同时，针对相同日期，分别赋予并推导出水位平均高度和体积变化。这一数据集对于稳健分析湖泊趋势及其对降雨事件的响应具有极高的价值。湖泊轮廓的Shapefiles以矢量格式呈现（WGS 1984 / UTM Zone 30N，EPSG代码：32630），其中包含了每个日期相关的海拔和体积信息。