Constructing dataset of classified drainage areas based on surface water-supply patterns in High Mountain Asia
Wat erin zit
The High Mountain Asia (HMA) region is a geographical unit, holds the largest reservoir of glaciers and snow outside Earth poles, ranging from the Hindu Kush and Tien Shan in the west to the Eastern Himalaya, with altitude between 2000 to 8844m. In last decades, numerous glaciers and lake areas there have undergone tremendous changes, where the formation of surface runoff, glacier meltwater are the main sources of water inflow to lakes, modulating the distribution of water resources. Aim to better understand the pattern of distribution about water resources, and their dynamic changes at basin scale in HMA, a watershed classification dataset based on the water supply replenishment pattern was constructed using data of glacier and surface runoff from Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales(HydroSHEDS), the Second Glacier Inventory and the vector dataset of rivers and streams of HMA. Four datasets were thus obtained: Glacier- and Stream-fed Drainage Area (GSDA), Glacier-fed and stream-free Drainage Area(GDA), glacier-free and Stream-fed Drainage Area(SDA), and the Glacier- and Stream-free Drainage Area (NGSDA), with the numbers of 87, …
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