Bricks

Now watch the mass of ice at center bottom carefully in this sequence of photographs.



You'll notice it appears to be growing. This is not an illusion or a backwards time sequence.



That cliff face I estimate at 120--140 meters high.



Collapsing under its own weight the submarine iceberg falls back into the ocean.



And just a fraction of a second later, this last photo.



Typical seismicity from these events at 200 samples per second (separate bricks recording the same event).

This blow-up shows the precision with which the seismic signals track one another. The two bricks were only a few meters apart so the seismic signals are quite similar.