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

Description

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.

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