[winoneforthegipper]

Glacier are constantly influx, however during the summer months you have much more melt that was is normally caused by the friction between ice and land....

This melting creates fissures and cracks that pop when form or even when it calves....

So the summer is usually an elevated time with any glacier....

[Godzilla]

winnie - please do a little more research on glaciers

1. The rate of glacial movement does not cause sufficient ‘friction’ to generate melt water. Melt water comes from the top of the glacier from seasonal snow melts and works it way into the base of glaciers.

2. fissures and cracks are created in the brittle upper surface of glaciers as they pass over/around subsurface features, they do form a passage way for surface melt water to reach the base of glacers.

3. Melting doesn’t cause calving - that is when the ice breaks off generally into water.