Usgs photo courtesy of harry glicken 1986 surface

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USGS photo courtesy of Harry Glicken.
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1986 surface 2003 surface crater glacier 1980-1986 lava dome
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on a quiet September morning September 23, 2004 SEP webicorder (on 1980-1986 lava dome) an earthquake swarm started September 24, 2004 and didn’t stop!
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By October 1 Mount St. Helens’ first eruption of the 21 st century was underway! October 1, 2004
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October 11 a hot (775°C, 1430°F) lava spine emerged
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October 14 Temperatures as high as 775°C (1430°F) were measured on the spine The lava was mostly solidified in the conduit, and erupted (was pushed out) as a solid, but hot, spine
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FLIR ThermaCAM infrared camera, Mounted on a helicopter Measures how much radiation (heat) Is emitted from an object
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October 14 Temperatures as high as 775°C (1430°F) were measured on the spine measured on the spine. (infrared image) The lava was mostly solidified in the conduit, and erupted (was pushed out) as a solid, but hot, spine
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Sept. 1986
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Sept. 2004
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Oct. 4, 2004
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Oct. 11, 2004
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Oct. 13, 2004
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Nov. 4, 2004
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Nov. 29, 2004
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Dec. 11, 2004
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Jan. 3, 2005
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Feb. 1, 2005
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Feb. 21, 2005
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Apr. 19, 2005
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  • Spring '09
  • Bergantz
  • Volcanoes, Volcano, eruption, Pyroclastic flow, pyroclastic flows, debris avalanche, Eruption Plume Dynamics

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