Dangers of the rising seas and water

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Sea level rise breaks even the most pessimistic forecasts.
Rising Earth’s temperature and melting ice led to sea level rise. And if from the 1870s to the 1990s, the global sea level rose 8 inches, in the period from 1992 till today it has already risen by over 3 inches, according to NASA.
In 2013, the United Nations predicted the sea level to rise from 0.1 to 0.3 inches by the end of the century. However, this figure has been growing faster than it did 50 years ago, therefore this phenomenon is likely to accelerate.
The changes are not uniform. In some areas the sea level has increased by over 10 inches, in others – such as the US west coast – it has declined, according to the data obtained from the satellite over 23 years.
Scientists are convinced the ocean currents and the natural cycles temporarily compensate for rising water levels in the Pacific Ocean. Thus, a significant sea level increase is to be observed on the American west coast in the next 20 years. Low-lying areas such as Florida are particularly vulnerable.
Nevertheless, this does not stop people from buying real estate and housing development in the coastal zone. From 50 to 60% of US residents live in counties washed by the Atlantic and Pacific oceans, the Gulf of Mexico or the Great Lakes. According to the forecasts, by 2050, the properties worth from $66 billion to $106 billion can go under water. In addition, close to 50 or 60% of NASA laboratories and infrastructure are at 15 feet distance from the water borders. In value terms, this amounts close to $2 billion.
Sea level rise is one of the factors leading to the disappearance of beaches, strengthening of coastal storms and the construction in the coastal zone.
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Oceanographers say that about a third of sea-level rise is caused by water heating, the second third – melting polar ice sheets, another third – melting mountain glaciers.
The melting of the Canada’s Arctic Archipelago glaciers led to the sea level rise, according to a new study by the employees at Michigan State University.
The archipelago, which is the snowy wilderness, occupies over 1.4 million km2 and has more than 35,000 islands. Researchers found out that from 2004 to 2009 the archipelago lost a snow cover capable of filling three-quarters of a huge Lake Erie. This was caused by unusually warm weather in those years. As it turned out, one-degree temperature rise in the Arctic regions results in additional 60 cubic km of water.
99 percent of world continental ice deposits are in Antarctica and Greenland. Despite their size, they are responsible for about half of the continental ice melting that runs to the oceans. Scientists did not expect the Canadian archipelago to make such a major contribution to global sea level change.
You can read more of this article in our December 2015 issue of ModelsMania

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