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Deformation Monitoring of Mt. Erebus, Antarctica, 1980–1985

  • G. H. Blick
  • P. M. Otway
  • B. J. Scott
Part of the IAVCEI Proceedings in Volcanology book series (VOLCANOLOGY, volume 1)

Abstract

Deformation studies of the summit area of Mt. Erebus, Antarctica, commenced in December 1980. Triangulation and tilt-levelling networks have been surveyed annually, in conjunction with the International Mount Erebus Seismic Studies (IMESS) project.

Only minor deformation has been detected. Measurements from the triangulation network on the summit indicate cumulative expansion of approximately 50 mm across the crater. Most of this appears to have occurred in 1982 and 1984, the latter period coinciding with increased volcanic activity. Tilts of more than 15 microradians/yr have been recorded on several of the tilt-levelling patterns, but their directions appear random and do not correlate with volcanic activity. Tilts recorded during 1985 are larger than those recorded previously. The significance of this is not yet understood. They are thought to be due to local ground instability rather than to volcanic deformation.

Keywords

Initial Survey Lava Lake Deformation Monitoring Summit Area Deformation Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Blick GH, Scott BJ (1986) Volcanic activity and deformation of the summit of Mt. Erebus, Antarctica, the 1985 Survey. NZ Geol Surv Rep EDS 101: 39Google Scholar
  2. Dibble RR, Kienle J, Kyle PR, Shibuya K (1984) Geophysical studies of Erebus Volcano, Antarctica, from 1974 December to 1982 January. NZ J Geol Geophys 27: 425–455Google Scholar
  3. Giggenbach WF, Kyle PR, Lyon GL (1973) Present volcanic activity on Mount Erebus, Ross Island, Antarctica. Geology 1: 135–136CrossRefGoogle Scholar
  4. Kyle PR, Dibble RR, Giggenbach WF, Keys J (1982) Volcanic activity associated with the anorthoclase-phonolite lava lake, Mount Erebus, Antarctica. In: Craddock (ed) Madison, Antarctica Geoscience. Univ Wisconsin, pp 735–745Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • G. H. Blick
  • P. M. Otway
  • B. J. Scott
    • 1
  1. 1.Department of Scientific and Industrial ResearchN.Z. Geological SurveyLower HuttNew Zealand

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