Seismological observations on Mount Erebus, Ross Island, Antarctica, 1980-1981

Mount Erebus (3794m) on Ross Island is one of active volcanoes in Antarctica. Two high sensitive seismic networks were installed during the 1980-1981 austral summer field season for studying seismicity in Ross Island. The one was a three-station radio telemetry network, and the other was a six-station network with long-life portable data recorders. The latter was installed temporarily around the main crater near the summit from December 20,1980 to January 6,1981. In spite of wild and harsh environment for the seismic observations, many volcanic earthquakes were recorded by the seismic networks. The number of 111 shallow events were located using the data of the above two networks. The hypocenters clustered beneath the summit in a range from near the surface to 6km. Many events accompanied the explosive eruptions were recorded at summit stations around the main crater