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

Prepare for the AICP Exam

Join the thousands of students who have utilized the Planetizen AICP* Exam Preparation Class to prepare for the American Planning Association's AICP* exam.
Starting at $245
AICP CTP Storefont Display

The first online AICP* CTP exam prep class

Are you ready to take the AICP* Certified Transportation Planner exam?
Priced at $245 for May exam!
Book cover of Insider's Guide to Careers in Urban Planning

So you want to be a planner...

Check out our behind the scenes look at 25 careers in the Urban Planning field
Starting at $14.95
City Plate table setting

New Arrival! City Plates

City downtown cores printed on gorgeous decorative collectible porcelain plates.
$50.00