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Victoria University Antarctic Research Expedition Science and Logistics Reports 1981-82: VUWAE 26

References

References

Kyle, P.R., Dibble, R.R., Giggenbach, W.F., Keys, J.H., 1982: Volcanic activity associated with the anorthoclase phonolite lava lake, Mt. Erebus, Antarctica, In Craddock (Ed.), Antarctic Geoscience, University of Wisconsin Press, IUGS Series B - 4.

Kienle, J., Kyle, P.R., Estes, S., Takanami, T., Dibble, R.R., Submitted 1981: Seismicity of Mt. Erebus 1980/81, Antarctic Journal of the United States National Science Foundation.

Takanami, T., Terai, K., Osada, N., Kienle, J., Estes, S., Kyle, P.R., Dibble, R.R., 1981: Earthquake Observations at Mt. Erebus, Antarctica. Part 1 (in Japanese), Seismological Society of Japan, Proceedings of the Annual General Meeting, October 1981.

Takanami, T., 1981: Earthquake Observations at the summit of Mt. Erebus, Antarctica (in Japanese), Kyokucki (Polar News, Japan Polar Research Association), 33: 52-7.

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Figure 2: Relation between recorded levels of seismic signals and infrasonic signals of eruptions at the summit of Erebus. For a given seismic level, the range of infrasonic level is 25 dB.

Figure 2: Relation between recorded levels of seismic signals and infrasonic signals of eruptions at the summit of Erebus. For a given seismic level, the range of infrasonic level is 25 dB.

Figure 3: Average diurnal variation of earthquake occurrence rate at Erebus summit between 29 November and 10 December 1981. Large earthquakes (>600 W) were not frequent between 2 and 6 hours NZST, while small earthquakes (0.6-6 W) were most frequent between 10 and 18 hours NZST and correlated with the mean diurnal gravity tide.

Figure 3: Average diurnal variation of earthquake occurrence rate at Erebus summit between 29 November and 10 December 1981. Large earthquakes (>600 W) were not frequent between 2 and 6 hours NZST, while small earthquakes (0.6-6 W) were most frequent between 10 and 18 hours NZST and correlated with the mean diurnal gravity tide.

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Figure 4: Earthquake occurrence rate versus size at the summit of Erebus. The levels and slopes of the graph are similar in the 80/81 and 81/82 seasons, and show different b-values for small earthquakes and for the larger earthquakes which are usually accompanied by eruptions.

Figure 4: Earthquake occurrence rate versus size at the summit of Erebus. The levels and slopes of the graph are similar in the 80/81 and 81/82 seasons, and show different b-values for small earthquakes and for the larger earthquakes which are usually accompanied by eruptions.

Figure 5: Travel time graph of seismic waves from a large explosion fired by L.D. McGinnis in McMurdo Sound which was well-recorded on the IMESS net.

Figure 5: Travel time graph of seismic waves from a large explosion fired by L.D. McGinnis in McMurdo Sound which was well-recorded on the IMESS net.

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Table 2. Eruptions of Erebus between 27 November and 12 December 1981.

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PLATE II: Sphincter corer ready to drop (left), and resulting core (below). (See next page).

PLATE II: Sphincter corer ready to drop (left), and resulting core (below). (See next page).