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Free research papers and essays on topics related to: united states geological

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  • Clean Air Act - 1,133 words
    Clean Air Act 1990, the federal Clean Air Act was passed to improve air quality in the United States. President Bush's proposed amendments to the Clean Air Act initially would have led to the introduction of alternative, non-petroleum fuels. The petroleum and oxygenate industries responded by offering a reformulated gasoline program as a substitute for most of the alternate fuel proposals. As a result, the amendments to the federal Clean Air Act adopted in 1990 required steps to achieve lower vehicle emissions, including programs to oxygenate and reformulate gasoline. Oxygenated gasoline is designed to increase the combustion efficiency of gasoline, thereby reducing carbon monoxide emissions ...
    Related: urban areas, issues surrounding, united states president, advisory, regulatory
  • Mount St Helen - 659 words
    Mount St. Helen Mount St. Helen is a volcano located along the Cascade range which is a volcano chain stretching from Northern California to British Colombia. It now stands at a height of 8,364 feet above sea level. Mount St. Helen was on of the smaller eruptions of five major ones in Washington State. Its elevation before the eruption was 9,677 feet high. On March 29, 1980 after a period of one-hundred and twenty-three years of inactivity a earthquake under the volcano quaked, and seven days later a pheartic (steam) explosions began. As magma pushed up from beneath the earths surface, the north side of the mountain developed a bulge. Angle and slope-distance measurements indicating that the ...
    Related: helen, mount, united states geological, washington state, elevation
  • Seismic Activity - 513 words
    Seismic Activity California has 200 or more faults capable of producing large earthquakes. Some of the faults are hidden and some visible at the surface. The biggest concentration of faults are in the San Adreas fault zone and the San Jacinto fault zone. Because of Californias large amount of Fault lines the United States Geological Survey, the California division of mines and Geology, the California Institute and other agencies have developed the Southern California Earthquake Center and TriNet Seismic network. This organization monitors the earthquake activity. The seismographs are linked to a computer using a mix of GPS and Landlines . The seismography records are sent to a computer withi ...
    Related: earthquake activity, seismic activity, data center, geological survey, parallel
  • The San Francisco 1989 Earthquake - 918 words
    The San Francisco 1989 Earthquake The Loma Prieta Earthquake On Tuesday October 17, 1989 at 5:04 PM the Loma Prieta earthquake struck the San Francisco, Monterey Bay, and Silicon Valley areas. Those were no the only areas affected. Many areas up to 70 and 100 miles away could feel the tremble of the quake. The epicenter of the quake was in the Santa Cruz Mountains. The quake measured a magnitude of 7.1. The initial quake lasted 15 seconds. The USGS first thought the magnitude of the quake would be about 6.9 but it increased to 7.1. The quake destroyed many buildings and freeways. A section of the San Francisco-Oakland Bay Bridge collapsed. The power was out in many places and the telephone l ...
    Related: earthquake, francisco, san francisco, district attorney, mr. gore
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