Geologists Puzzled By Thousand of “Ice Quakes” on Mount Rainier

Geologists are puzzled by thousands of Magnitude 1 “ice quakes” believed to be at the base of — most likely the Emmons Glacier — on Mount Rainier. There were similar quakes in 1990 and 1998, but these have lasted long. Scientists speculate it may be water. Unlike regular earthquakes which come on suddenly the ice quakes build and then subside. They say that the quakes are not related to the recent slab avalanche that killed a climber. That quake was blamed on weather (recent cool weather brought on large late season snows).

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