Sunday, March 3, 2019
What happened to the Mt Helen?
come up St. Helens, located in southwestern Washington most 50 miles northeast of Portland, Oregon, is one of many vol jackpotic peaks that dominate the go down Range of the Pacific Northwest the range extends from Mount Garibaldi in British Columbia, Canada, to Lassen Peak in northern California. Geologists c altogether Mount St. Helens a intricate volcano (or stratovolcano), a term for steep sided, often symmetrical cones constructed of jump layers of lava flows, ash, and other volcanic debris.Composite volcanoes tend to erupt explosively and set up considerable danger to nearby life and property. In contrast, the gently sloped shield volcanoes, such as those in Hawaii, typically erupt nonexplosively, producing roving lavas that can flow great distances from the wide awake vents. Although Hawaiian-type eruptions may destroy property, they seldom cause death or injury.Before 1980, snow-capped, gracefully symmetrical Mount St. Helens was known as the Fujiyama of America. Mou nt St. Helens, other active go down volcanoes, and those of Alaska form the North American segment of the circum-Pacific Ring of Fire, a notorious zone that produces frequent, often destructive, earthquake and volcanic activity. (1)Basic Data fixture South central Washington State (Cowlitz County). Latitude 4620 N Longitude 12218 W.TypeStratovolcano Size comparison Mt. St. Helens is the smallest of the five study volcanoes in Washington State, and also the youngest of these. Its last eruption was 123 years earlier. tip 9,677 feet before 8,363 feet after 1,314 feet removedMain Eruption May 18, 1980, 832 a.m. (Pacific time)Pyroclastic flow speed at least 300 miles per minute (some material traveled much faster). Pyroclastic flow temperature As high as 1,300 degrees F (700 degrees C) Energy released 24 megatons thermal energy (7 by blast, recumb through release of heat) 50 times more powerful than the Hiroshima nuclear blast. Landslide note The landslide is the Worlds larges t recorded event EVER ash plume height Reached about 80,000 feet in less than 15 legal proceeding Ash cloud dispersal Spread across U.S. in 3 days circled reality in 15 days. Deaths At least 60-65 persons, and thousands of animals, birds, and insects.(2)On May 18, 1980, at 832 a.m. Pacific Daylight Time, a magnitude 5.1 earthquake shook Mount St. Helens, releasing an enormous burst forth of energy, instantly transforming a peaceful wilderness into a hellish landscape. As soon as the eruption was over, the process of rebirth and renewal began. The muddle is still in the spotlight after 20 years. Come and verify the story of this amazing wonder of nature in this commemorative of the day of remembrance of the day that chaos reigned.October 1, 2004 Mount St. Helens Activity Increases. We probably will not see an event to match the 1980 eruptions of this now-famous volcano, but recent activity has escalate and researchers are watching closely.What did we learn from it?We can lea rn some facts from it.(1) An active volcano can be destructive at any evince of time. So you have to be very careful about that. (2) You just can not predict what exactly going to happen in nature. (3) We should except one thing what ever we have achieved in comprehension and technology or whatever, NATURE IS THE BOSS AND WILL ALWAYS BEWhy earth information is great to people?Earth science affects all our lives. Our landscape has been shaped by natural processes such as tectonics, weathering, and biological activity over billions of years. We use natural materials everyday, everything from building careen and oil to metals such as iron, copper and gold, and even diamonds have all been extracted from the ground. Natural hazards such as volcanoes, earthquakes, floods and droughts can dramatically affect lives. Earth science is the study of all these processes, put simply it is the study of our planet. arrest how our planet works is essential if we are to properly manage our env ironment, and if we are to predict how the environment will change in the future. Earth scientists can monitor changes in our environment, model our electric shock on the environment and apprize solutions to our environmental problems. Environmental issues being studied by earth scientists include, the do of water extraction from our rivers, the distribution of pollutants in the landscape and the environmental impact of industrial activity, such as mining and landfill.Natural hazards such as earthquakes, volcanoes and floods are responsible for many deaths, and for the loss of many more homes and livelihoods. change magnitude knowledge of natural hazards will improve predictions of the occurrence and scale of these potentially life threatening events, giving people a chance to prepare.(4)REFERENCES(1) The narration of Mt Helen is taken from http//www.weathersage.com/storms/mthelen/sited on May 18,2007(2) Basic data of Mt Helen is taken fromhttp//ublib.buffalo.edu/libraries/asl/ guides/msh.html sited on May 18,2007(3) Why earth science is important to people? Is taken fromhttp//www.nerc.ac.uk/research/areas/earth/importance.asp sited on May 18,2007