The first two screen shots are of two separate but very similar events, and they have the appearance of repeated calving events but we have not done any analysis yet.

This event only showed up on the stations displayed below. There is no filtering. It seems to be very polarized.

The following examples show a type of very short-lived event that we see all the time, many times an hour, throughout the whole record on Bering Glacier. These could be crevassing events.

Here is a very long lived event at station MILR. Appears to be a teleseism (Mag. 6.7 in Guatamala (thanks Mike West)). Note that the window shown is one hour of data.