Research Article
Changes in Glaciers and Glacial Lakes and the Identification of Dangerous Glacial Lakes in the Pumqu River Basin, Xizang (Tibet)
Table 3
Integrated criteria for identifying potentially dangerous glacial lakes.
| Index | Criteria | Frequencies | Weight |
| Type of glacial lake | End moraine-dammed lake | 10 | 0.15 | Area of lake | Larger than 0.2 km2 | 10 | 0.15 | Distance between lake and its mother glacier | Smaller than 500 m | 10 | 0.15 | Average slope of glaciers | Larger than 7 degree | 7 | 0.10 | Slope of the downstream | Larger than 20 degree | 7 | 0.10 | Top width of dam | Less than 60 meters | 7 | 0.10 | Area of glacier | Larger than 2 km2 | 6 | 0.09 | Slope between lake and its mother glacier | Larger than 8 degree | 5 | 0.07 | Change of lake area | Larger than 10% of decade | 4 | 0.06 | Elevation of lake | Higher than 5000 meters | 2 | 0.03 |
|
|