Download Environmental Geology: Facing the Challenges of Our Changing by Jon Erickson PDF

By Jon Erickson

Supporting readers to appreciate the hopes and the risks dealing with humankind via studying extra concerning the explanations and the results of environmental swap, Environmental Geology is a helpful advisor to a thrilling and comparatively new technology that offers with the connection among humans and their geologic setting. bankruptcy via bankruptcy, this quantity information the numerous methods man-made and average forces have led to severe - and every now and then, irreversible - harm to the earth, together with: - weather swap: The Greenhouse impact - Hydrologic job: Water circulate and Flooding - Coastal tactics: Seacoasts and Estuaries - Tectonic risks: Earthquakes and Volcanoes - Desertification: Deserts and Droughts - usual assets: Depletion of commercial fabrics - Land Use: The altering panorama.

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As human populations continue to grow and the demand for nuclear-generated electricity continues to rise, presently accounting for about 15 percent of the Figure 37 The Three Mile Island nuclear power plant, Harrisburg, Pennsylvania. It underwent a reactor accident in 1979, which necessitated reassessment of nuclear safety in the United States. S. Department of Energy) 50 environmental degradation world’s total generating capacity, a viable solution for the storage of nuclear wastes must soon be found if Earth is to remain free of radioactive poisons.

21 environmental geology CO2 H2 CO3 CaCO3 Figure 16 The geochemical carbon cycle. Carbon dioxide converted into bicarbonate is washed off the land and enters the ocean, where marine organisms convert it into carbonate sediments, which are thrust into the Earth’s interior and become part of molten magma. Carbon dioxide is returned to the atmosphere by volcanic eruptions. 22 The biological carbon cycle is only a small component of this cycle. It is the transfer of carbon from the atmosphere to vegetation by photosynthesis to produce organic compounds.

Many older plants built before 1975 and plants built in other countries are not required to make costly investments to clean up the air, however. Governments are generally reluctant to pass laws requiring mandatory emission controls to clean up the environment because of possible adverse economic effects. Dumping carbon dioxide underground or into the oceans could slow global warming. They, in turn, would absorb more carbon dioxide from the atmosphere. Figure 39 Clean coal technology demonstrated at the Yates electrical generation station, Coweta County, Georgia.

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