Back to Search
Start Over
Decadal changes from a multi-temporal glacier inventory of Svalbard
- Source :
- The Cryosphere, Vol 7, Iss 5, Pp 1603-1621 (2013)
- Publication Year :
- 2013
- Publisher :
- Copernicus Publications, 2013.
-
Abstract
- We present a multi-temporal digital inventory of Svalbard glaciers with the most recent from the late 2000s containing 33 775 km2 of glaciers covering 57% of the total land area of the archipelago. At present, 68% of the glacierized area of Svalbard drains through tidewater glaciers that have a total terminus width of ~ 740 km. The glacierized area over the entire archipelago has decreased by an average of 80 km2 a−1 over the past ~ 30 yr, representing a reduction of 7%. For a sample of ~ 400 glaciers (10 000 km2) in the south and west of Spitsbergen, three digital inventories are available from the 1930/60s, 1990 and 2007 from which we calculate average changes during 2 epochs. In the more recent epoch, the terminus retreat was larger than in the earlier epoch, while area shrinkage was smaller. The contrasting pattern may be explained by the decreased lateral wastage of the glacier tongues. Retreat rates for individual glaciers show a mix of accelerating and decelerating trends, reflecting the large spatial variability of glacier types and climatic/dynamic response times in Svalbard. Lastly, retreat rates estimated by dividing glacier area changes by the tongue width are larger than centerline retreat due to a more encompassing frontal change estimate with inclusion of lateral area loss.
- Subjects :
- Environmental sciences
GE1-350
Geology
QE1-996.5
Subjects
Details
- Language :
- English
- ISSN :
- 19940416 and 19940424
- Volume :
- 7
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- The Cryosphere
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.70b0120d811a4e0291c7ece3f688a0f2
- Document Type :
- article
- Full Text :
- https://doi.org/10.5194/tc-7-1603-2013