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- Vogel, HendrikInstitute of Geological Sciences, University of Bern, Bern, Switzerland (author)
Lake Floor Morphology and Sediment Architecture of Lake Tornetrask, Northern Sweden
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- 2016-11-15
- Wiley-Blackwell,2013
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:umu-76279
- https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-76279URI
- https://doi.org/10.1111/geoa.12006DOI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- Here we present datasets from a hydroacoustic survey in July 2011 at Lake Tornetrask, northern Sweden. Our hydroacoustic data exhibit lake floor morphologies formed by glacial erosion and accumulation processes, insights into lacustrine sediment accumulation since the beginning of deglaciation, and information on seismic activity along the Parvie Fault. Features of glacial scouring with a high-energy relief, steep slopes, and relative reliefs of more than 50m are observed in the large W-basin. The remainder of the lacustrine subsurface appears to host a broad variety of well preserved formations from glacial accumulation related to the last retreat of the Fennoscandian ice sheet. Deposition of glaciolacustrine and lacustrine sediments is focused in areas situated in proximity to major inlets. Sediment accumulation in distal areas of the lake seldom exceeds 2m or is not observable. We assume that lack of sediment deposition in the lake is a result of different factors, including low rates of erosion in the catchment, a previously high lake level leading to deposition of sediments in higher elevated paleodeltas, tributaries carrying low suspension loads as a result of sedimentation in upstream lakes, and an overall low productivity in the lake. A clear off-shore trace of the Parvie Fault could not be detected from our hydroacoustic data. However, an absence of sediment disturbance in close proximity to the presumed fault trace implies minimal seismic activity since deposition of the glaciolacustrine and lacustrine sediments.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
- Lake Torneträsk
- Scandes Mountains
- northernmost Sweden
- lake floor morphology
- lacustrine sedimentation
- Weichselian glaciation
Added entries (persons, corporate bodies, meetings, titles ...)
- Wagner, BerndInstitute of Geology and Mineralogy, University of Cologne, Köln, Germany (author)
- Rosen, PeterUmeå universitet,Institutionen för ekologi, miljö och geovetenskap(Swepub:umu)pero0001 (author)
- Institute of Geological Sciences, University of Bern, Bern, SwitzerlandInstitute of Geology and Mineralogy, University of Cologne, Köln, Germany (creator_code:org_t)
Related titles
- In:Geografiska Annaler. Series A, Physical Geography: Wiley-Blackwell95:2, s. 159-1700435-36761468-0459
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