File:MSH80 bulge on north side 04-27-80.jpg

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Description

English: A "bulge" developed on the north side of Mount St. Helens as magma pushed up within the peak. Angle and slope-distance measurements to the bulge indicated it was growing at a rate of up to five feet (1.5 meters) per day. By May 17, part of the volcano's north side had been pushed upwards and outwards over 450 feet (135 meters). The view is from the northeast.

Date

27 April 1980

Source

CVO Photo Archives Mount St. Helens: A General Slide Set

Author

Peter Lipman

Permission
( Reusing this file)

This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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The following pages on Schools Wikipedia link to this image (list may be incomplete):

1980 eruption of Mount St. Helens

Schools Wikipedia facts

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