http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery for Video Tag: Mount http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[October 1, 2004 Explosion at Mount St. Helens]]> http://gallery.usgs.gov/videos/682 On October 1, 2004, an explosion in the crater of Mount St. Helens sent ash and water vapor several thousand feet into the air. It was the dramatic beginning of an eruption that continued for the next 3+ years. The explosion fractured Crater Glacier and hurled rocks for at least one-half mile across the western half of the glacier and the 1980-1986 lava dome. USGS scientists on a helicopter flight captured the explosion on video. The view from the air is to the west.

]]> <![CDATA[Time-series of dome and glacier growth at Mount St. Helens, Washington, 2004-2012]]> http://gallery.usgs.gov/videos/627 The video shows time-lapse changes in the lava dome and Crater Glacier from 2004-2012. The images were created from 1:12,000 scale vertical aerial photographs combined with ground control points from campaign GPS and targets. Photogrammetry software was used to collect a 3-D point cloud and combined to make a digital elevation model (DEM). Information regarding volume and rates of growth of the lava dome and glacier are extracted from DEMs to monitor surface changes in the crater.

]]> <![CDATA[Time-lapse images of Mount St. Helens dome growth 2004-2008]]> http://gallery.usgs.gov/videos/628 The rapid onset of unrest at Mount St. Helens on September 23, 2004 initiated an uninterrupted lava-dome-building eruption that continued until 2008. The initial phase produced rapid growth of a lava dome as magma pushed upward. As shown in the video, an initial succession of lava spines, two recumbent and one steeply sloping, grew to nearly 500 m in length before disintegrating into mounds of rubble. The trajectory of lava extrusion was affected by the geometry of the crater, particularly the proximity of the vent to the south crater wall, and by the growing volume of erupted material.

]]> <![CDATA[Mount St. Helens' Runaway Glacier: A time-lapse video of Crater Glacier’s response to lava dome growth]]> http://gallery.usgs.gov/videos/593 From 2005 to 2010, the U.S. Geological Survey-Cascades Volcano Observatory operated a remote camera on the northwest flank of Mount St. Helens. Looking into the crater, the camera captured hourly photographs of volcanic dome growth during the 2004-2008 eruption. The station also captured the advance of the west arm of Crater Glacier as it moved northeast around the 1980-1986 and 2004-2008 lava domes, joined with the east arm of the glacier, and pushed northward onto the crater floor. The time-lapse sequence links individual photographs to produce a video of the movement of Crater Glacier, showing the glacier’s remarkable run-away response to volcanic dome growth.

]]> <![CDATA[Science for a Changing World]]> http://gallery.usgs.gov/videos/546 “Science for a Changing World” is a short film (eight minutes) describing a brief history of the USGS and the significance of USGS work and mission in today’s world and its value in the past.

]]> <![CDATA[Mount St. Helens 1980 Ash Cloud as Seen From Space]]> http://gallery.usgs.gov/videos/386 Eruptive activity at Mount St. Helens captured the world’s attention on May 18, 1980 when the largest historical landslide on Earth and a powerful explosion reshaped the volcano. A volcanic ash cloud spread across the US in 3 days, and encircled the Earth in 15 days.

This mini-movie compiled from individual satellite images taken in 1980 shows the ash cloud as it enlarged, and was carried by winds across the western United States. Each photo identifies Mount St. Helens, some large cities, and the ash cloud. These satellite images are used courtesy of the National Oceanic and Atmospheric Administration (NOAA).

The first satellite picture was taken at 8:15 a.m. PDT, 17 minutes before the eruption. The next six pictures were taken every half hour until 11:15 a.m. PDT. Thereafter, images were taken every hour through 4:15 p.m. PDT.

Images taken on May 19, 1980 show the distinctive ash plume drifting across the Rocky Mountains and high plains. These 3 images were shot at 8:45 a.m., 11:15 a.m. and 3:15 p.m. Because ash can travel so far and can be hazardous, we must keep in mind that there are no remote volcanoes.

The eruption of Mount St. Helen’s killed 57 people, and losses exceeded $1 billion. Since the eruption, hundreds of volcanologists from around the world have come to study Mount St. Helens. Scientists from the United States have in turn traveled around the world to share the experience of Mount St. Helens and seek lessons from other volcanoes.

Mount St. Helens awes and inspires visitors, and challenges all of us to greater levels of preparedness.

]]> <![CDATA[Rotarun Trail - Mountain Biker Haven]]> http://gallery.usgs.gov/videos/348 Describes construction of a segment of mountain bike trail network near Hailey, Idaho using American Recovery and Reinvestment Act funds.

Also see: Rotarun Trail - Community Collaboration

]]> <![CDATA[Rotarun Trail - Community Collaboration]]> http://gallery.usgs.gov/videos/349 Details the collaboration between Bureau of Land Management and local community to design and build a mountain bike trail.

Also see: Rotarun Trail - Mountain Biker Haven

]]> <![CDATA[Mount St. Helens: May 18, 1980]]> http://gallery.usgs.gov/videos/234 <![CDATA[Mount St. Helens: A Catalyst for Change]]> http://gallery.usgs.gov/videos/235 <![CDATA[San Andreas Fault: Highway]]> http://gallery.usgs.gov/videos/58 B-roll of trains, powerlines, roads, and utilities over the San Andreas Fault at Cajon Pass.]]> <![CDATA[San Andreas Fault: Train]]> http://gallery.usgs.gov/videos/59 B-roll of trains, powerlines, roads, and utilities over the San Andreas Fault at Cajon Pass.]]> <![CDATA[San Andreas Fault: Train]]> http://gallery.usgs.gov/videos/60 B-roll of trains, powerlines, roads, and utilities over the San Andreas Fault at Cajon Pass.]]> <![CDATA[San Andreas Fault: Highway]]> http://gallery.usgs.gov/videos/61 B-roll of trains, powerlines, roads, and utilities over the San Andreas Fault at Cajon Pass.]]> <![CDATA[San Andreas: Lost Lake]]> http://gallery.usgs.gov/videos/62 B-roll of Lost Lake directly over the San Andreas Fault at Cajon Pass.

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