Vulcao.Odp 2

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Vulcao.Odp 2

  1. 1. Volcano eruption Work done by: Maria Barros, 11ºC
  2. 2. <ul><li>It is an opening in the terrestrial crust through which lava, gases and other materials are expelled to the surface of the continents or the oceanic zones. </li></ul>
  3. 3. Causes and consequences <ul><li>Increase of pressure in the magmatic chamber </li></ul><ul><li>Tectonic movements </li></ul>
  4. 4. <ul><li>Atmospheric pollution (smoke and dust that can reach thousand of km); </li></ul><ul><li>Climatic change; </li></ul><ul><li>Destruction of the landscape; </li></ul><ul><li>Affected the humanity; </li></ul><ul><li>Deforestation; </li></ul><ul><li>Extinction of species </li></ul>
  5. 5. In the Azores... <ul><li>...the eruption lasted some months. It also left many damage all over the all island, having the leached ashes reached the neighboring islands Pico and San Jorge. Many houses were buried and totally destroyed. Of the 30 thousand inhabitants of the island at the time, 17 thousand left the island. </li></ul>
  6. 7. Landslide Sliding movements of the hillsides, that destroy what on them is constructed and bury the lowest areas .
  7. 8. Causes and consequences <ul><li>Sudden collapses of ground or geologic structures; </li></ul><ul><li>Erosive, seismic, volcanic phenomenon or high precipitations; </li></ul><ul><li>Accumulations of debris or the excess of weight or pressure on ground. </li></ul>
  8. 9. <ul><li>Destruction of infra-structures, as houses and roads </li></ul><ul><li>Destruction of habitats of the species </li></ul><ul><li>Innumerable victims </li></ul>El Salvador La Conchita, Califórnia
  9. 10. In the Egypt.. . ..In the year of 2004, 43 people were victims of a landslide of a hillside, with 15 meters of height and more than 200 tons, on a quarter of Nasser Manshiyet, in the east of the Cairo. The rocks destroyed some constructions, namely houses, provoked 23 wounded and till now 15/ 20 people continue disappeared.
  10. 11. Solution <ul><li>Geologic studies in the interior of the land; </li></ul><ul><li>Forbide constructions of infra-structures in dangerous areas; </li></ul><ul><li>Systems of alert. </li></ul>

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