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USDA Forest Service: Mount St. Helens VolcanoCam; Pre-1980 Eruptive History of Mount St. Helens, Washington; USGS: Before, During, and After May 18, 1980; Boston.com – The Big Picture – 30 years later; The short film Eruption of Mount St. Helens, 1980 (1981) is available for free viewing and download at the Internet Archive.
Mount St. Helens, once the fifth-tallest peak in Washington State, lost about 1,300 feet from its height of 9,677, according to the USGS. The highest part of the crater rim on the southwestern ...
David Alexander Johnston (December 18, 1949 – May 18, 1980) was an American United States Geological Survey (USGS) volcanologist who was killed by the 1980 eruption of Mount St. Helens in the U.S. state of Washington. A principal scientist on the USGS monitoring team, Johnston was killed in the eruption while manning an observation post six ...
Harry Glicken (March 7, 1958 – June 3, 1991) [1] was an American volcanologist.He researched Mount St. Helens in the United States before and after its 1980 eruption, and was very distraught about the death of volcanologist David A. Johnston, who was Glicken's mentor and supervisor in Spring 1980 at Mount St. Helens.
The Mount St. Helens major eruption of May 18, 1980, remains the deadliest and most economically destructive volcanic event in U.S. history. [4] Fifty-seven people were killed; 200 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. [ 5 ]
A conifer forest will return to Mount St. Helens in its own time. On a debris-avalanche deposit totally devoid of life after May 18, 1980, plants are slowly taking hold of the landscape.
Español: Esta foto muestra el Monte St. Helens un dia antes de su devastante erupción de 1980, visto desde David A. Johnston. Ridge, seis millas (diez kilómetros) al noroeste del volcán. Ridge, seis millas (diez kilómetros) al noroeste del volcán.
Over 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption.