Detail View: NASA Scientific Visualization Studio Collection: Jakobshavn Glacier Calving Front Recession from 1850 to 2006

Title: 
Jakobshavn Glacier Calving Front Recession from 1850 to 2006
Instrument: 
Landsat-7/ETM+
Description: 
This element corresponding with the above image contains the overlay (with alpha) showing lines that indicate the glacier's calving front positions and dates. A distance scale is also shown.
Abstract: 
Jakobshavn Isbrae is located on the west coast of Greenland at Latitude 69 N. The ice front, where the glacier calves into the sea, receded more than 40 km between 1850 and 2006. Between 1850 and 1964 the ice front retreated at a steady rate of about 0.3 km/yr, after which it occupied approximately the same location until 2001, when the ice front began to recede again, but far more rapidly at about 3 km/yr. After 2004, the glacier began retreating up its two main tributaries: one to the north, and a more rapid one to the southeast. These changes are important for many reasons. As more ice moves from glaciers on land into the ocean, it causes a rise in sea level. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of the ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase.
Completed: 
2006-12-18
Credit: 
*Please give credit for this visualization to* NASA/Goddard Space Flight Center Scientific Visualization Studio Historic calving front locations courtesy of Anker Weidick and Ole Bennike
Studio: 
SVS
Animator: 
Cindy Starr (Lead)
Scientist: 
Anker Weidick (Geological Survey of Denmark and Greenland)
Science paper: 
Weidick, A. and Bennike, O.: Quaternary glaciation history and glaciology of Jakobshavn Isbrae and the Disko Bugt region, West Greenland: a review.
Data Collected: 
Historical calving front locations provided by A. Weidick and O. Bennike; Recent calving front locations derived from Landsat Imagery (07/07/2001, 09/03/2002, 08/23/2003, 10/03/2004) and ASTER Imagery(07/02/2005, 08/08/2006); Landsat Imagery shown (07/07/2001)
Keywords: 
Cryology
facet_where: 
Denmark
facet_when: 
07/02/2005
facet_what: 
ASTER
facet_when_year: 
2001
Animation Number: 
3395
UID: 
SPD-SCIVS-http://svs.gsfc.nasa.gov/vis/a000000/a003300/a003395/JakobshavnOverheadOverlay.1024-IMAGE
original url: 
http://svs.gsfc.nasa.gov/vis/a000000/a003300/a003395/index.html