Noticia: erupcion monte st. helen

Solo disponible en BuenasTareas
  • Páginas : 3 (526 palabras )
  • Descarga(s) : 0
  • Publicado : 7 de septiembre de 2012
Leer documento completo
Vista previa del texto
The New Day

Washington – Mt. St. Helens hadn’t erupted since 1857. On 1978 scientist were saying that the volcano will erupt before the end of the century. The eruption started with a serious ofearthquakes, and in May 18, 1980 the biggest landslide recorded in history, it was traveling at 670 mph. Than a few seconds later the volcano made its big eruption. Some people think it was prettycool for a volcano erupting, but even though it’s cool it’s very dangerous because when a volcano erupts the explosion can be either explosive or nonexplosive. When the eruption is explosive it sendsshowers of gasses, ash, and hot rock into the air. The stuff that comes out of a volcano during an explosive eruption is called pyroclastic material, like when Mt. St. Helens erupted in 1980.Nonexplosive eruptions are the most common kind. This type of eruption lets out red rivers of lava called lava flows. Sometimes, a nonexplosive eruption will also spray lava into the air, and that iscalled lava fountains.
This was the deadliest and most economically destructive volcanic event in the history of the United States. All pilots’ maps were obsolete because the mountain hadchanged. There was no reliable list of people in the danger area. At the time seventy people (estimated) were killed. The most common cause of death was asphyxiation by ash. 250 homes, 47 bridges, 15miles of railways and 185 miles of highway were destroyed. The rebuilt of the State Route 504 cost $160 million. Crop loss was estimated at one hundred million dollars. Thousands of trees died,because the landslide on the north face of the volcano and surrounding the volcano killed 150 miles of forest was destroyed because of it. Thousands of dead trees still float on Spirit Lake. Toxic inthe immediate aftermath of the blast, the lake is now richer than ever filled with tadpoles, aquatic plants and 20-inch rainbow trout. Scientists saw that plants returned to the utterly devastated...
tracking img