Volcano Seismology December 6, 2012 | USGS "USGS volcano seismologist, Seth Moran, describes how seismology and seismic networks are used to mitigate... Volcanic Hazards in the United States August 5, 2012 | USGS "The United States has 169 active volcanoes. More than half of them could erupt explosively,... Impact of Volcanic Ash on Air Traffic January 16, 2013 | United States Geological Survey This USGS video explains the impact of volcanic ash on air traffic and the work... Determining the Potential Impact of Volcanic Eruptions on Society December 4, 2012 | USGS Angie Diefenbach, USGS geologist, uses geospatial data sets and GIS to study the potential impact... USGS Physical Science Technician April 19, 2012 | USGS on YouTube "In the video, Robert Leeper stands in the field while explaining how he became associated... Monitoring the Fire Below Yellowstone April 15, 2013 | American Museum of Natural History Three of the most catastrophic volcanic eruptions in geologic history occurred at a place now... USGS: Science for a Changing World June 15, 2012 | United States Geological Survey "Science for a Changing World is a short film (eight minutes) describing a brief history... Interesting USGS Video about Gas Hydrates June 6, 2012 | USGS This video explains the importance of gas hydrates then demonstrates some of their properties in... |