Melting Glaciers Cause Land to Rise in Alaska

Sea levels are declining near Juneau, Alaska, as a result of melting glaciers. Though it may seem a good sign in the face of climate change, the expanding earth is causing some major environmental concerns.

"The geology is complex, but it boils down to this: Relieved of billions of tons of glacial weight, the land has risen much as a cushion regains its shape after someone gets up from a couch. The land is ascending so fast that the rising seas - a ubiquitous byproduct of global warming - cannot keep pace. As a result, the relative sea level is falling, at a rate "among the highest ever recorded," according to a 2007 report by a panel of experts convened by Mayor Bruce Botelho of Juneau.

Greenland and a few other places have experienced similar effects from widespread glacial melting that began more than 200 years ago, geologists say. But, they say, the effects are more noticeable in and near Juneau, where most glaciers are retreating 30 feet a year or more.

As a result, the region faces unusual environmental challenges. As the sea level falls relative to the land, water tables fall, too, and streams and wetlands dry out. Land is emerging from the water to replace the lost wetlands, shifting property boundaries and causing people to argue about who owns the acreage and how it should be used. And meltwater carries the sediment scoured long ago by the glaciers to the coast, where it clouds the water and silts up once-navigable channels."

Full Story: As Alaska Glaciers Melt, It’s Land That’s Rising

Comments

Build Your Own Paper Block City

Urban Fold is an all-inclusive kit that allows anyone to build the city of their dreams with a few simple folds.
$24.95
building block set

NEW! Build the world you want to see

Irresistible block set for adults when placed on a coffee table or desk, and great fun for kids.
$25

City Coasters

Hand-drawn engraved maps of your favorite neighborhoods are divided up across 4 coasters making each one unique.
$36.00
Book cover of Where Things Are from Near to Far

Where Things Are From Near to Far

This engaging children's book about planning illustrates that "every building has its place."
$19.95