Further to Witgren's point, wasn't all that brouhaha about the Himalaya glaciers based on a typo too? (realclimate.org)
Analysis of data from a deployment of seismometers located near an ice marginal lake in the Swiss Alps reveals, for the first time, that harmonic tremor occurs within mountain glaciers and that individual icequakes at the glacier base can exhibit harmonic properties. (pubs.geoscienceworld.org)
These observations suggest that there is a complex network of fluid - induced fracture processes at the glacier base. (pubs.geoscienceworld.org)