1930
62 of 80 measured glacier tongues retreated.
Glaciers measured80single-year length change
Advancing810%
Retreating6278%
Median change−5.5m
Mass balance−0.19m w.e.mean of 3 glaciers
Length change
80 tongues measured
Mass balance
3 glaciers
| Glacier | Annual balance |
|---|---|
| Grosser Aletschgletscher | −0.64 m w.e. |
| Silvrettagletscher | −0.08 m w.e. |
| Claridenfirn | +0.16 m w.e. |