Image: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.
Source

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

April 27, 1980
Author

Peter Lipman
Permission
( Reusing this image)
Public domain 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 Interior. For more information, see the official USGS copyright policy


File history

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Date/Time Dimensions User Comment
current 16:42, 28 November 2007 2,958×1,977 (3.51 MB) CarolSpears ({{Information |Description= {{en|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. B)
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