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Title: Warning on rising Med Sea levels
Source:
BBC
URL Source: http://news.bbc.co.uk/2/hi/science/nature/7197379.stm
Published: Jan 19, 2008
Author: BBC
Post Date: 2008-01-19 00:25:26 by robin
Keywords: None
Views: 4065
Comments: 130
The level of the Mediterranean Sea is rising rapidly and could increase by up to half a metre in the next 50 years, scientists in Spain have warned. A study by the Spanish Oceanographic Institute says levels have been rising since the 1970s with the rate of increase growing in recent years. It says even a small rise could have serious consequences in coastal areas. The study noted that the findings were consistent with other investigations into the effects of climate change. The study, entitled Climate Change in the Spanish Mediterranean, said the sea had risen "between 2.5mm and 10mm (0.1 and 0.4in) per year since the 1990s". If the trend continued it would have "very serious consequences" in low-lying coastal areas even in the case of a small rise, and "catastrophic consequences" if a half-metre increase occurred, the study warned. Global climate change Scientists noted that sea temperatures had also risen significantly by 0.12 to 0.5C since the 1970s. Sea level rise is a key effect of global climate change. There are two major contributory effects: the melting of ice, and expansion of sea water as the oceans warm. Last month, a study by the Intergovernmental Panel on Climate Change said the world's sea levels could rise twice as much this century as UN climate scientists had previously predicted. The Nobel Prize-winning IPCC predicted a maximum sea level rise of 81cm (32in) this century.
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#1. To: All, *Global Climate Change* (#0)
#3. To: robin (#1)
Every year billions of tons of earth get washed into the sea, raising sea levels. In 100 million years, mountains become plains. Most people, except for the scientific, believe short term trends will continue. Global temperature changes for number of reasons and none are man made. One is because the sun has a variable output another is due to the wobble of the earth. The current warm period will reverse in about 20 years and we will start a cooling trend that will make most humans wish it was warmer. When certain astronomical events occur all at once, there will be another ice age and with our present technology man will be unable to prevent it. If an ice age occurs with man's present level of technology, billions of people will die. Well, they will die anyway; but the the death rate will exceed the birth rate to such an extent that the population of the earth will be billions less. We are advancing toward a Type I civilization. Such a civilization should be able to prevent an ice age.
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