1. HERE is the first clip, of Tremor in Mt. Erebus:
February 3, :00:0 UTC
HERE is the first clip, of Tremor in Mt. Erebus:
A complex tremor episode recorded on Mount Erebus (vertical ground motion).
Despite superficial similarities to volcanic tremor, it was soon determined that these signals were not being generated by the volcano.
Frequency (Hz)
Time (s)
Seismic Displacement
100 x speed
1 Hour
Aster et al, 2004

2. On October 27, 2005, B15A shattered off Cape Adare, Victoria Land.
THIS IS THE MAP SHOWING WHERE THE ICEBERG WAS DURING THE NEXT TWO AUDIO CLIPS. The “Impact with Drygalski Ice tongue” is the location of the first clip. The “B-15A fragmentation” is the location of the second clip.
The Travels (and Travails) of B15A - Seismic signature of the breakup of Earth’s largest iceberg.
After splitting off B15B, B15J, and B15K, B15A finally left the Ross Island area in November of 2004, traveling over 700 km before its IRIS PASSCAL instrumentation was recovered.
On October 27, 2005, B15A shattered off Cape Adare, Victoria Land. km
Martin et al., in prep

3. B15A Seismograms/Spectrograms During Break-up (48-hours)
Satellite-observed break-up
The “hard hit”
100 x speed