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Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Joseph A Bard U.S. Geological Survey, ALASKA REGION Volcano Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase More... Tags (with Type=Theme and Scheme=USGS) dem (2) elevation (2) geology (2) geoscientificinformation (2) lava (2) volcanic activity (2) volcanoes (2) More... View Results as: JSON ATOM CSV

Digital elevation model of the lava dome in the crater of Mount St. Helens, November 12, 1986 The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is the May 18th eruption marked the beginning of a period of eruptive activity that lasted through 1986. From October 1980 through October 1986, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater floor. Most of the growth occurred when magma extruded onto the surface of the dome, forming short (650 to 1,300 feet), thick (65 to 130 feet) lava flows. This data release is a 1-meter resolution digital elevation model (DEM) and a corresponding hillshade raster derived from a previously unpublished 1:2,000 scale topographic contour... Tags: Cascade Range, DEM, Geography, Mount Saint Helens, Mount Saint Helens National Volcanic Monument, All tags... Pacific Northwest, USGS Science Data Catalog (SDC), United States of America, Volcanology, Washington, elevation, geology, geoscientificInformation, lava, volcanic activity, volcanoes, volcanology, Fewer tags Digital elevation model of the lava dome in the crater of Mount St. Helens on October 20, 1988 The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is the May 18th eruption marked the beginning of a period of eruptive activity that lasted through 1986. From October 1980 through October 1986, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater floor. Most of the growth occurred when magma extruded onto the surface of the dome, forming short (650 to 1,300 feet), thick (65 to 130 feet) lava flows. This data release is a 2-meter resolution digital elevation model (DEM) and hillshade raster derived from a previously unpublished 1:4,000 scale topographic contour map, based on... Tags: Cascade Range, DEM, Geography, Geomorphology, Mount Saint Helens, All tags... Mount Saint Helens National Volcanic Monument, Pacific Northwest, USGS Science Data Catalog (SDC), United States of America, Volcanology, Washington, elevation, geology, geoscientificInformation, lava, volcanic activity, volcanoes, volcanology, Fewer tags