Zobrazeno 1 - 10
of 150
pro vyhledávání: '"F. Pálsson"'
Autor:
A. Vincent, C. Daigre, O. Fischer, G. Aðalgeirsdóttir, S. Violette, J. Hart, S. Guðmundsson, F. Pálsson
Publikováno v:
Hydrology and Earth System Sciences, Vol 28, Pp 3475-3494 (2024)
For reliable forecasting of the evolution of critical water resources, as well as of potential flood and landslide hazards and their response to climate change, it is necessary to improve the understanding and quantification of unknown aquifer system
Externí odkaz:
https://doaj.org/article/ea875a888bfe4626809467cd6c14b1fd
Publikováno v:
The Cryosphere, Vol 18, Pp 2443-2454 (2024)
Geothermal heat sources beneath glaciers and ice caps influence local ice-dynamics and mass balance but also control ice surface depression evolution as well as subglacial water reservoir dynamics. Resulting jökulhlaups (i.e., glacier lake outburst
Externí odkaz:
https://doaj.org/article/486dedb7dffb4dc2a4246a6e2a7cf3de
Publikováno v:
The Cryosphere, Vol 17, Pp 3955-3986 (2023)
During the melt season, absorbed solar energy, modulated at the surface by albedo, is one of the main governing factors controlling surface melt variability for glaciers in Iceland. An energy balance model was applied with the possibility of utilizin
Externí odkaz:
https://doaj.org/article/83745650425f47aa98c7f9eb0f3b3508
Autor:
E. Magnússon, F. Pálsson, M. T. Gudmundsson, T. Högnadóttir, C. Rossi, T. Thorsteinsson, B. G. Ófeigsson, E. Sturkell, T. Jóhannesson
Publikováno v:
The Cryosphere, Vol 15, Pp 3731-3749 (2021)
We present repeated radio-echo sounding (RES, 5 MHz) on a profile grid over the eastern Skaftá cauldron (ESC) in Vatnajökull ice cap, Iceland. The ESC is a ∼ 3 km wide and 50–150 m deep ice cauldron created and maintained by subglacial geotherm
Externí odkaz:
https://doaj.org/article/254228c7ef5649fdbc518e204c5ef1c0
Publikováno v:
The Cryosphere, Vol 15, Pp 547-570 (2021)
During the melt season, absorbed solar energy, modulated at the surface predominantly by albedo, is one of the main governing factors controlling surface-melt variability for glaciers in Iceland. Using MODIS satellite-derived daily surface albedo, a
Externí odkaz:
https://doaj.org/article/9c576a0398e14718802d3daebe31e904
Publikováno v:
The Cryosphere, Vol 12, Pp 2229-2248 (2018)
Bayesian hierarchical modeling can assist the study of glacial dynamics and ice flow properties. This approach will allow glaciologists to make fully probabilistic predictions for the thickness of a glacier at unobserved spatiotemporal coordinate
Externí odkaz:
https://doaj.org/article/d80ea8fcc0e3489d9abe17a01bacedf5
Autor:
L. S. Schmidt, G. Aðalgeirsdóttir, S. Guðmundsson, P. L. Langen, F. Pálsson, R. Mottram, S. Gascoin, H. Björnsson
Publikováno v:
The Cryosphere, Vol 11, Pp 1665-1684 (2017)
A simulation of the surface climate of Vatnajökull ice cap, Iceland, carried out with the regional climate model HIRHAM5 for the period 1980–2014, is used to estimate the evolution of the glacier surface mass balance (SMB). This simulation uses
Externí odkaz:
https://doaj.org/article/468c7b4c4ffb45f9a71e4568aef1f4cb
Autor:
J. M. C. Belart, E. Berthier, E. Magnússon, L. S. Anderson, F. Pálsson, T. Thorsteinsson, I. M. Howat, G. Aðalgeirsdóttir, T. Jóhannesson, A. H. Jarosch
Publikováno v:
The Cryosphere, Vol 11, Pp 1501-1517 (2017)
Sub-meter resolution, stereoscopic satellite images allow for the generation of accurate and high-resolution digital elevation models (DEMs) over glaciers and ice caps. Here, repeated stereo images of Drangajökull ice cap (NW Iceland) from Pléia
Externí odkaz:
https://doaj.org/article/ed58fa3ba6884964b40e963d57fd0a8e
Autor:
M. Wittmann, C. D. Groot Zwaaftink, L. Steffensen Schmidt, S. Guðmundsson, F. Pálsson, O. Arnalds, H. Björnsson, T. Thorsteinsson, A. Stohl
Publikováno v:
The Cryosphere, Vol 11, Iss 2, Pp 741-754 (2017)
Deposition of small amounts of airborne dust on glaciers causes positive radiative forcing and enhanced melting due to the reduction of surface albedo. To study the effects of dust deposition on the mass balance of Brúarjökull, an outlet glacier of
Externí odkaz:
https://doaj.org/article/499eeb9117374bbf954963e4df7266cb
Publikováno v:
The Cryosphere, Vol 10, Iss 1, Pp 159-177 (2016)
In this paper we describe how recent high-resolution digital elevation models (DEMs) can be used to extract glacier surface DEMs from old aerial photographs and to evaluate the uncertainty of the mass balance record derived from the DEMs. We present
Externí odkaz:
https://doaj.org/article/dfd7e9f387d240aea89244eee2285c59