e360 digest


17 May 2012: Retreat of Columbia Glacier
Vividly Captured in NASA Satellite Images

Click to enlarge
Columbia Glacier NASA Satellite

NASA
Alaska’s Columbia Glacier, 1986—2011
Two false-color thermal images taken by NASA satellites depict the rapid retreat of the Columbia Glacier in Alaska over the past 25 years. Since 1986, the glacier’s end-point, or terminus, has retreated 12 miles up an inlet in Prince William Sound, and the glacier also has lost about half its total thickness and volume. The top image, taken by a Landsat 5 satellite in 1986, shows two branches of the glacier joining together just north of Heather Island. By 2011, the terminus had retreated far up the inlet, and is identifiable in the bottom image. The blue in the water below the 2011 terminus is floating ice that has calved off the leading edge of the Columbia Glacier, which descends from a 10,000-foot ice field in the Chugach Mountains. By 2011, the two branches of the glacier had become separated. The turquoise color in the images is snow, and it is more prevalent in 2011 because that image was taken in May, whereas the top image was shot in July.


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter


CONNECT


ABOUT

About e360
Contact
Submission Guidelines
Reprints

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

e360 VIDEO

“video
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land.
Watch the video.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 PHOTO ESSAY

“Alaska
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S.
View the photos.

e360 VIDEO

“Ugandan
Ugandan scientists monitor the impact of climate change on one of Africa’s most diverse forests and its extraordinary wildlife.
Learn more.

e360 VIDEO

Food waste
An e360 video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs.
Watch the video.

e360 VIDEO

Colorado wildfires
An e360 video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate.
Watch the video.

e360 SPECIAL REPORT

“Tainted
A three-part series Tainted Harvest looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup.
Read the series.

OF INTEREST



Yale