Brent O'Brien working at the IMEEMS station in Scott Base
Brent O'Brien is pointing to electric detonator for seismic charge
Brent O'Brien ready to fire a seismic shot near the Erebus upper hut
Brent o'Brien beside a camera on Mt Erebus crater rim
Scientists examining a camera on Mt Erebus Crater rim
O'Brien, Shimizu, and Kennedy at telemetry transmitter
Brent O'Brien replacing the battery for the cones infrasonic microphone
Brent O'Brien studying volcanology at IMEEMS desk
