Scientists detect seasonal pattern to glacial earthquakes in Greenland, see signs of increase
... and 1999, experienced more than two dozen glacial quakes between 2000 and 2005. Although glacial earthquakes appear to be most common in Greenland, Ekstrm, Nettles and Tsai have also found evidence of glacial earthquakes originating from mountain glaciers in Alaska and at glaciers located in ice streams a......sidence as a warning of possible future megathrust quakes like the Dec. 26 9.0 Sumatra-Andaman Islands earth...plates thrust over one another in these zones, the quakes are referred to as megathrust earthquakes. They often generate tsunamis. "What we think happens is,...