Mount St. Helens

Related Links
Offsite URLs open in a new window
CVO Mount St. Helens Webpage
Mount St. Helens National Volcanic Monument
Mount St. Helens National Volcanic Monument - from the US Forest Service
Custom search the ANSS earthquake catalog. St. Helens earthquakes occur between 46.17 and 46.23 degrees North latitude, and 122.14 and 122.23 degrees West longitude (-122.23 to -122.14).

Special Circular: The Washington Dept. of Natural Resources offers a free circular for those who write to them requesting it: Roadside Geology of Mount St. Helens National Volcanic Monument and Vicinity, by Patrick T. Pringle, DNR Information Circular 88. It can be obtained from Visitor Centers at Mount St. Helens, or by mail from the following address:

Washington Dept. of Natural Resources, P.O. Box 47007, Olympia Washington 98504-7007, Telephone 360-902-1450.

Suggested Bibliography
(Seismicity Only)

Endo, E. T., S. D. Malone, L. L. Noson, and C. S. Weaver, Locations, magnitudes, and statistics of the March 20-May 18 earthquake sequence, U.S. Geol. Surv. Prof. Pap., 1250, 93-107, 1981.

Fehler, M., Locations and spectral properties of earthquakes accompanying an eruption of Mount St. Helens, Journal of Geophysical Research, v.90, p. 12,729-12,740, 1985.

Fremont, M. J., and S. D. Malone, High precision relative locations of earthquakes at Mount St. Helens, Washington, Journal of Geophysical Research, v. 92, p. 10,223-10,236, 1987.

Kanamori, H., J. W. Given, and T. Lay, Analysis of seismic body waves excited by the Mount St. Helens eruption of May 18, 1980, Journal of Geophysical Research, v. 89, p. 1856-1866, 1984.

Lees, J. M., The magma system of Mount St. Helens: Non-linear high resolution P-wave tomography, Journal of Volcanology and Geothermal Research, v. 54, p. 103-116, 1992.

Malone, S. D., E. T. Endo, C. S. Weaver, and J. W. Ramey, Seismic monitoring for eruption prediction, U.S. Geological Survey Professional Paper 1250, p. 808-813, 1981.

Malone, S. D., C. Boyko, and C. S. Weaver, Seismic precursors to the Mount St. Helens eruptions in 1981 and 1982, Science, v. 221, p. 1376-1378, 1983.

Mastin, L. G., Explosive tephra emissions at Mount St. Helens, 1989-1991: The violent escape of magmatic gas following storms?, Geological Society of America Bulletin, v. 106, p. 175-185, 1994.

Moran, S. C., Seismicity at Mount St. Helens, 1987-1992: Evidence for repressurization of an active magmatic system, Journal of Geophysical Research, v. 99, p. 4341-4354, 1994.

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