Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden
ABSTRACT. Here we present datasets from a hydroacoustic survey in July 2011 at Lake Torneträsk, 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 deglacia...
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ftunivbern:oai:boris.unibe.ch:45274 2023-08-20T04:06:28+02:00 Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden Vogel, Hendrik Wagner, Bernd Rosén, Peter 2013-06 https://boris.unibe.ch/45274/ eng eng Wiley-Blackwell https://boris.unibe.ch/45274/ info:eu-repo/semantics/restrictedAccess Vogel, Hendrik; Wagner, Bernd; Rosén, Peter (2013). Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden. Geografiska annaler. Series A - physical geography, 95(2), pp. 159-170. Wiley-Blackwell 10.1111/geoa.12006 <http://dx.doi.org/10.1111/geoa.12006> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2013 ftunivbern https://doi.org/10.1111/geoa.12006 2023-07-31T21:04:31Z ABSTRACT. Here we present datasets from a hydroacoustic survey in July 2011 at Lake Torneträsk, 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 Pärvie Fault. Features of glacial scouring with a high-energy relief, steep slopes, and relative reliefs of more than 50 m 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 2 m 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 Pärvie 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. Article in Journal/Newspaper Fennoscandian Ice Sheet Northern Sweden BORIS (Bern Open Repository and Information System, University of Bern) High Lake ENVELOPE(-110.849,-110.849,67.386,67.386) Torneträsk ENVELOPE(18.861,18.861,68.392,68.392) Geografiska Annaler: Series A, Physical Geography 95 2 159 170 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Vogel, Hendrik Wagner, Bernd Rosén, Peter Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
topic_facet |
550 Earth sciences & geology |
description |
ABSTRACT. Here we present datasets from a hydroacoustic survey in July 2011 at Lake Torneträsk, 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 Pärvie Fault. Features of glacial scouring with a high-energy relief, steep slopes, and relative reliefs of more than 50 m 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 2 m 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 Pärvie 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. |
format |
Article in Journal/Newspaper |
author |
Vogel, Hendrik Wagner, Bernd Rosén, Peter |
author_facet |
Vogel, Hendrik Wagner, Bernd Rosén, Peter |
author_sort |
Vogel, Hendrik |
title |
Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
title_short |
Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
title_full |
Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
title_fullStr |
Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
title_full_unstemmed |
Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden |
title_sort |
lake floor morphology and sediment architecture of lake torneträsk, northern sweden |
publisher |
Wiley-Blackwell |
publishDate |
2013 |
url |
https://boris.unibe.ch/45274/ |
long_lat |
ENVELOPE(-110.849,-110.849,67.386,67.386) ENVELOPE(18.861,18.861,68.392,68.392) |
geographic |
High Lake Torneträsk |
geographic_facet |
High Lake Torneträsk |
genre |
Fennoscandian Ice Sheet Northern Sweden |
genre_facet |
Fennoscandian Ice Sheet Northern Sweden |
op_source |
Vogel, Hendrik; Wagner, Bernd; Rosén, Peter (2013). Lake Floor Morphology and Sediment Architecture of Lake Torneträsk, Northern Sweden. Geografiska annaler. Series A - physical geography, 95(2), pp. 159-170. Wiley-Blackwell 10.1111/geoa.12006 <http://dx.doi.org/10.1111/geoa.12006> |
op_relation |
https://boris.unibe.ch/45274/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/geoa.12006 |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
95 |
container_issue |
2 |
container_start_page |
159 |
op_container_end_page |
170 |
_version_ |
1774717512412299264 |