Journal
JOURNAL OF MAPS
Volume 12, Issue 5, Pages 790-796Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17445647.2015.1076744
Keywords
structural glaciology; Austre Broggerbreen; Svalbard; Arctic; ice dynamics
Categories
Funding
- Natural Environment Research Council (NERC) ARSF [03-16]
- NERC
- European Centre for Arctic Environmental Research in Ny-Alesund (ARCFAC) [026129-2008-47]
- Climate Change Consortium of Wales (C3W)
- Natural Environment Research Council [1229362] Funding Source: researchfish
Ask authors/readers for more resources
Structural glaciological maps can be used to study the structural evolution and past dynamics of glaciers. The map described here documents the glacier-wide structural characteristics of Austre Broggerbreen, a c. 12 km(2) predominantly cold-based valley glacier in northwest Svalbard. The structural map reveals that the glacier is dominated by deep-penetrating fractures that are now relict (crevasse traces). These structures indicate that, despite being relatively inactive at present, the glacier was once much more dynamic, presumably during its last advance in the Neoglacial (c. 1900 AD). Contemporary glacier structures (i.e. those that are actively forming) include primary stratification, longitudinal foliation and rare surface fracturing (crevasses and water-healed crevasses). Relict fracture sets become increasingly re-orientated and folded down-glacier as a result of ductile flow. Individual flow units show large differences in the evolution of structures, indicating that the flow units have been subject to different flow histories and dynamics. The map will also be useful for future change-detection studies on this rapidly receding glacier.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available