Svalbard surge dynamics derived from geometric changes
نویسندگان
چکیده
منابع مشابه
Surge dynamics in the Nathorstbreen glacier system, Svalbard
Nathorstbreen glacier system (NGS) recently experienced the largest surge in Svalbard since 1936, and this was examined using spatial and temporal observations from DEM differencing, time series of surface velocities from satellite synthetic aperture radar (SAR) and other sources. The upper basins with maximum accumulation during quiescence corresponded to regions of initial lowering. Initial s...
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Repeat-pass Interferometry between several pairs of ERS SAR images spanning one and three days are used to investigate a surge of Monacobreen, a glacier in Northwest Svalbard. Eye-witness reports, optical satellite images and radio echo-sounding all pointed to a surge event occurring in the early 1990s. ERS Images were chosen carefully from an available archive of 156 suitable pairs using meteo...
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[1] We compare satellite altimetry from the Ice, Cloud, and Land Elevation Satellite (ICESat, 2003–2007) to older topographic maps and digital elevation models (1965– 1990) to calculate long-term elevation changes of glaciers on the Svalbard Archipelago. Results indicate significant thinning at most glacier fronts with either slight thinning or thickening in the accumulation areas, except for g...
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Recent sediment accumulation rates in Adventfjorden (Svalbard), a small subpolar fjord, were determined by Pb and Cs dating. Modern rates in the central basin decrease downfjord from 1.87 to 0.87 cm y−1 (2.6 to 1.19 g cm−2 y−1). Comparison of the modern values (1986–2001) with older ones (1963–86) reveals a marked increase in sediment accumulation rates in the last ten years. This correlates we...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 2009
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756409789624265