Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| one publication added to basket [246809] |
Rapid dynamic activation of a marine-based Arctic ice cap
McMillan, M; Shepherd, A; Gourmelen, N; Dehecq, A; Leeson, A; Ridout, A; Flament, T; Hogg, A; Gilbert, L; Benham, T; van den Broeke, M; Dowdeswell, A; Fettweis, X.; Noel, B; Strozzi, T (2014). Rapid dynamic activation of a marine-based Arctic ice cap. Geophys. Res. Lett. 41(24): 8902-8909. dx.doi.org/10.1002/2014GL062255
In: Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007, meer
|   |
| Trefwoord |
|
| Author keywords |
ice cap; mass balance; Austfonna; dynamic instability; altimetry; InSAR |
| Auteurs | | Top |
- McMillan, M
- Shepherd, A
- Gourmelen, N
- Dehecq, A
- Leeson, A
|
- Ridout, A
- Flament, T
- Hogg, A
- Gilbert, L
- Benham, T
|
- van den Broeke, M.
- Dowdeswell, A
- Fettweis, X., meer
- Noel, B
- Strozzi, T, meer
|
| Abstract |
We use satellite observations to document rapid acceleration and ice loss from a formerly slow-flowing, marine-based sector of Austfonna, the largest ice cap in the Eurasian Arctic. During the past two decades, the sector ice discharge has increased 45-fold, the velocity regime has switched from predominantly slow (~ 101?m/yr) to fast (~ 103?m/yr) flow, and rates of ice thinning have exceeded 25?m/yr. At the time of widespread dynamic activation, parts of the terminus may have been near floatation. Subsequently, the imbalance has propagated 50?km inland to within 8?km of the ice cap summit. Our observations demonstrate the ability of slow-flowing ice to mobilize and quickly transmit the dynamic imbalance inland; a process that we show has initiated rapid ice loss to the ocean and redistribution of ice mass to locations more susceptible to melt, yet which remains poorly understood. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
