High-resolution bathymetric dataset of Lake Issyk, Kazakhstan: new insights into the morphology of a mountain reservoir

The collection contains raster and vector data acquired during the bathymetric study of Lake Issyk. The primary data is provided as a digital elevation model of the lakebed, stored in GeoTIFF format. The raster file (Esik_DEM.tif) possesses a spatial resolution of 1 meter and offers comprehensive data on the depths and morphology of the lakebed.
A The digital elevation model (Esik_DEM.tif) is created based on a shapefile with point data representing depth values reduced to the corresponding coordinates. Spatial sampling algorithms were employed to generate the point shapefile. Employing an echo sounder with a data gathering interval of 1-2 seconds ensured the data's accuracy. The error in-depth readings is ±0.5% of the observed depth, attributable to the features of the echo sounder and external influences, including vessel speed and weather conditions. Nonetheless, the impact of these effects is mitigated due to the cyclical nature of data gathering.

本数据集收录了在伊塞克湖水域地形研究中获取的栅格和矢量数据。其中，主要数据以湖泊底部数字高程模型的形式提供，并存储为 GeoTIFF 格式。该栅格文件（Esik_DEM.tif）具有1米的空间分辨率，并提供了湖泊底部深度及形态的详尽数据。数字高程模型（Esik_DEM.tif）是基于代表深度值的点数据形状文件构建而成，该点数据形状文件通过空间采样算法生成。使用具有1-2秒数据采集间隔的回声测深仪确保了数据的准确性。深度读数的误差为观测深度的±0.5%，该误差可归因于回声测深仪的特性及外部影响，如船舶速度和天气条件等。然而，由于数据采集的周期性，这些影响的影响程度得到缓解。