https://m.youtube.com/watch?v=sC9JnuDuBsU&feature=youtu. https://volcanoes.usgs.
ID: 113926 • Letter: H
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https://m.youtube.com/watch?v=sC9JnuDuBsU&feature=youtu.
https://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_hazard_75.html
Videos a. Please watch a video of interviews with USGS geologists who helped monitor Mount Saint Helens prior to and during the 1980 eruption: http:l/pubsuses gov/fs/2013/3014/videos/May18 1980,mp4 (6:30 min). b. Next watch an update to the state of Mount Saint Helen's eruptive activity: http://youtu.be/sC9JnuDuBsU (6:45 min). c. Read about the Hazards associated with eruptions at Mount Saint Helens on the USGS Web site: helens hazard 75.html (check out the hazards map on this page as well as the specific hazards like Lava Flow and Domes, Ash, Pyroclastic deposits, Lahars and Sedimentation using the navigation bar on the left side of the Web Site). Questions: 1. Towards the end of the first video about May 18, 1980 video (at about 5:48), Norm Banks (USGS) indicates that volcanologists learned a lot scientifically as well as to society's needs. Based on the video and your own knowledge of hazards and risk, what do you think are the kinds of things scientists learned from the 1980 eruption in terms of monitoring volcanoes? 2. What are some of the more modern methods for monitoring volcanoes that have been developed since the 1980 eruption? How do those help geoscientists understand a volcano's activity? Are the monitoring techniques used in 1980 obsolete? 3. Describe some of the characteristics of the eruption hazards at Mount Saint Helens in the table below Types of Damage Caused (e.g blowing down houses, fires, etc.) 9Type of area most likely for future (e.g, river channel, Type of Hazard high plains, downwind, etc. Use Hazard Map) Lava Flows, Domes Ash/Tephra Fall Lahars Flooding &Explanation / Answer
According to the scientists, they learnt how to deal with public and press so that through press and media, world may come to know how volcano works, its eruption and what are the risks involved. This led volcanology to be included in a major study of science. People watched live eruptions broadcasted and this research led to better understanding of hazard and risk management related to volcanoes.
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