http://www.commondreams.org/headlines05/1125-04.htmPublished on Friday, November 25, 2005 by the Guardian/UK
Sea Level Rise Doubles in 150 Years
by Ashraf Khalil
Global warming is doubling the rate of sea level rise around the world, but attempts to stop it by cutting back on greenhouse gas emissions are likely to be futile, leading researchers will warn today.
The oceans will rise nearly half a metre by the end of the century, forcing coastlines back by hundreds of metres, the researchers claim. Scientists believe the acceleration is caused mainly by the surge in greenhouse gas emissions produced by the development of industry and introduction of fossil fuel burning.
Today's warning comes from US researchers at Rutgers University in New Jersey who analysed cores drilled from different sites along the eastern seaboard. By drilling down 500 metres through layers of different sediments and using chemical dating techniques, the scientists were able to work out where beaches and dry land were over the past 100m years.
The analysis showed that during the past 5,000 years, sea levels rose at a rate of around 1mm each year, caused largely by the residual melting of icesheets from the previous ice age. But in the past 150 years, data from tide gauges and satellites show sea levels are rising at 2mm a year.
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