TY  - STD
AU  - Christelle Marlin, Florian Tolle
PY  - 2017//
TI  - Change in geometry of a high Arctic glacier from 1948 to 2013 (Austre Lovénbreen, Svalbard)
BT  - Geografiska Annaler: Series A, Physical Geography
SP  - 115
EP  - 138
VL  - 99
IS  - 2
KW  - Arctic Austre Lovénbreen DEM Glacier mass balance Svalbard
N2  - The change of Austre Lovénbreen, a 4.5 km2 land-based glacier along the west coast of Spitsbergen, is investigated using geodetic methods and mass balance measurements over 1948–2013. For 2008−2013, annual mass balances computed on 36-stake measurements were obtained, in addition to annual mass balances reconstructed from the neighbouring glaciers, Midtre Lovénbreen (1968−2007) and Austre Brøggerbreen (1963−1967). The mean rate of glacier retreat for 1948–2013 is −16.7 ± 0.3 m a−1. Fluctuations in area (1948–2013 mean, −0.027 ± 0.002 km2 a−1) showed a slowing as the glacier recedes within its valley from 1990 to 1995. For 1962–2013, the average volume loss calculated by digital elevation model subtraction of −0.441 ± 0.062 m w.e. a−1 (or −0.54 ± 0.07% a−1) is similar to the average annual mass balance (−0.451 ± 0.007 m w.e. a−1), demonstrating a good agreement between the loss rates computed by both methods over 1962−2013. When divided in two periods (1962−1995 and 1995−2013), an increase in the rate of ice mass loss is statistically significant for the glacier volume change. The 0°C isotherm elevation (based on mean May–September air temperatures) is estimated to have risen by about 250 m up to the upper parts of the glacier between 1948 and 2013. The glacier area exposed to melting during May to September almost increased by 1.8-fold while the area reduced by a third since 1948. Within a few years, the glacier area exposed to melting will decrease, leading the upper glacier parts under the 0°C isotherm while the snout will keep on retreating.
SN  - 0435-3676
SN  - 0435-3676
L1  - http://publi.ipev.fr/polar_references/files/yes
UR  - http://dx.doi.org/10.1080/04353676.2017.1285203
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=6964), last updated on Tue, 30 Nov 1999 00:00:00 +0100
ID  - ChristelleMarlin2017
ER  -