Rising Seas, Sinking Coasts Spell Doom for Eastern US

Before washing out to sea, this house was the last remaining structure on the sunken island town of Holland Island, Maryland. (Photo: Baldeaglebluff/ cc via Flickr) The devastating impact of global warming induced sea level rise has become increasingly clear as powerful surges, coastal flooding and rapid erosion are more and more frequently wreaking havoc along the eastern seaboard of the United States.

A new report published Tuesday by the New York Times explains that, as the waters continue to rise, the land along the East Coast is also sinking, spelling disaster for coastal communities.

Accumulating scientific evidence suggests that the East Coast “will be a global hot spot for a rising sea level over the coming century,” notes New York Times reporter Justin Gillis.

“Scientists say the East Coast will be hit harder for many reasons, but among the most important is that even as the seawater rises, the land in this part of the world is sinking,” spelling “enormous risk for the United States,” Gillis reports.

Scientists have discovered that an ice sheet, which blanketed the upper half of North America following the last Ice Age, had caused the land along the Eastern Seaboard to buckle and rise. The subsequent melting of that ice is now causing the adjacent land to fall, meeting the rising sea.

The sinking, the New York Times reports, is occurring “all the way from southern Maine to northern Florida,” and is most dramatic in the Chesapeake Bay region where whole island communities have already washed out to sea.

Scientists estimate that since 1880, the global average sea level rose a little over eight inches.

However, due to increasingly high levels of carbon pollution in the atmosphere, by 2100 that amount could surge to more than four feet over today’s levels which–according to a study published earlier this year–at high tide could “submerge more than half of today’s population in 316 coastal cities and towns (home to 3.6 million) in the lower 48 states.”

According to the study, the U.S. cities most under threat from future coastal flooding include Miami, Virginia Beach, Va., and Jacksonville, Fla. with Boston and New York City closely following.


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Source: Common Dreams