(1983a), Seismological observations on Mount Erebus, Ross Island, Antarctica, 1980–1981. (1983), A study of the seismic and volcanic activity of Mount Erebus, Antarctica, 1981–1982. Shibuya, K., Baba, M., Kienle, J., Dibble, R. (1986), Seismicity in the vicinity of Ross Island, Antarctica, J. (1980), Seismic refraction studies in western McMurdo Sound. (1984), Seismicity of Mount Erebus and vicinity, 1983–1984. (1983), Volcanic activity and seismicity of Mount Erebus, 1982–1983. (1986), Earthquake swarms on Mount Erebus, Antarctica. ![]() (1985b), Volcanic earthquake swarms at Mt. (1985a), Explosion earthquakes of Mount Erebus, Antarctica. (1985), 1984–1985 nen McMurdo Sound chiiki no kokusai kyodo kansoku (Activities of Japanese earth science research in the McMurdo Sound region in the 1984–1985 season). (1973), Present volcanic activity on Mount Erebus, Ross Island. (1984), Geophysical studies of Erebus volcano Antarctica, from December 1974 to January 1982. (1985), Seismic activity of Mount Erebus, Antarctica in 1983–1984. (4) Only a few earthquakes were located in the area surrounding Erebus mountain after the September 1984 activity.Ī magma reservoir is estimated to be located in the southwest area beneath the Erebus summit, based on the hypocenter distributions of earthquakes.īaba, M., Kaminuma, K., Ueki, S. (3) A remarkable decrease of the background seismicity is recognized before and after the September 1984 activity. ![]() (2) The averag number of earthquakes in 1985 is 23 events per day, with only one earthquake swarm. Several earthquake swarms occurred each year. Our main observations from the seismic activity from 1982–1985 are as follows: (1) The average numbers of earthquakes which occurred around Mount Erebus in 1982, 1983 and January–August 1984 were 64, 134 and 146 events per day, respectively. A new volcanic episode began on 13 September, 1984 and continued until December. A program to monitor the seismic activity of Mount Erebus named IMESS was started in December 1980 as an international cooperative program among Japan, the United States and New Zealand. It is located on Ross Island and a convecting anorthoclase phonolite lava lake has occupied the summit crater of Mount Erebus from January 1973 to September 1984. Mount Erebus is presently the only Antarctic volcano with sustained eruptive activity in the past few years.
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