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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Economic geology
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Geothermal Resources (Paperback, 2nd ed. 1989. Softcover reprint of the original 2nd ed. 1989)
Loot Price: R2,996
Discovery Miles 29 960
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Geothermal Resources (Paperback, 2nd ed. 1989. Softcover reprint of the original 2nd ed. 1989)
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Since the Arab oil embargo of 1974, it has been clear that the days
of almost limitless quantities of low-cost energy have passed. In
addition, ever worsening pollution due to fossil fuel consumption,
for instance oil and chemical spills, strip mining, sulphur
emission and accumulation of solid wastes, has, among other things,
led to an increase of as much as 10% in the carbon dioxide content
of the atmosphere in this century. This has induced a warming trend
through the 'greenhouse effect' which prevents infrared radiation
from leaving it. Many people think the average planetary
temperatures may rise by 4 DegreesC or so by 2050. This is probably
true since Antarctic ice cores evidence indicates that, over the
last 160000 years, ice ages coincided with reduced levels of carbon
dioxide and warmer interglacial episodes with increased levels of
the gas in the atmosphere. Consequently, such an elevation of
temperature over such a relatively short span of time would have
catastrophic results in terms of rising sea level and associated
flooding of vast tracts of low-lying lands. Reducing the burning of
fossil fuels makes sense on both economic and environmental
grounds. One of the most attractive alternatives is geothermal
resources, especially in developing countries, for instance in El
Salvador where geothermal energy provides about a fifth of total
installed electrical power already. In fact, by the middle 1980s,
at least 121 geothermal power plants were operating worldwide, most
being of the dry steam type.
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