Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway
This thesis investigates Holocene storminess and climate change reconstructed from lacustrine sediments from the Lofoten-Vesterålen archipelago in northern Norway (68–69°N, 12–16°E). The present thesis consists of an introduction and three individual papers in studying different perspectives of aeol...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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The University of Bergen
2016
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Online Access: | https://hdl.handle.net/1956/12086 |
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ftunivbergen:oai:bora.uib.no:1956/12086 2023-05-15T13:25:43+02:00 Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway Nielsen, Pål Ringkjøb 2016-06-08 application/pdf https://hdl.handle.net/1956/12086 eng eng The University of Bergen Paper I: Nielsen, P.R., Balascio, N.L., Dahl, S.O., Jansen, H.L., Støren, E.W.N., Bradley, R.S. 2016: A high-resolution 1200-year lacustrine record of glacier and climate fluctuations in Lofoten, northern Norway. The Holocene. This article is not available in BORA. The published version is available at: 10.1177/0959683615622551 Paper II: Nielsen, P.R., Dahl, S.O., Jansen, H.L.: Mid- to late Holocene aeolian activity recorded in a coastal dunefield and lacustrine sediments on Andøya, northern Norway. This article is not available in BORA. The published version is available at: 10.1177/0959683616640050 Paper III: Nielsen, P.R., Dahl, S.O., Jansen, H.L., Støren, E.W.N.: Holocene aeolian sedimentation and episodic events recorded in lacustrine sediments on Langøya in Vesterålen, northern Norway. Submitted to Quaternary Science Reviews, December 3, 2015. Manuscript. This article is not available in BORA. urn:isbn:978-82-308-3317-9 https://hdl.handle.net/1956/12086 cristin:1372417 Copyright the author. All rights reserved. Doctoral thesis 2016 ftunivbergen https://doi.org/10.1177/095968361562255110.1177/0959683616640050 2023-03-14T17:44:25Z This thesis investigates Holocene storminess and climate change reconstructed from lacustrine sediments from the Lofoten-Vesterålen archipelago in northern Norway (68–69°N, 12–16°E). The present thesis consists of an introduction and three individual papers in studying different perspectives of aeolian (wind) activity reconstructed from (I) glacier fluctuations, (II) coastal dunefield dynamics and (III) variations in aeolian sand influx from three different lake sediment basins. Paper I presents the first high-resolution late-Holocene glacier record from Lofoten. The study is based on glacial geomorphological mapping and analyses of sediment cores from lake Kveitvikvatnet (30.1 m a.s.l.), which currently receives meltwater from three small cirque glaciers. By combining selected sediment proxies to glacier advances of known ages, a continuous curve of the glaciers equilibrium-line altitude (ELA) over the last 1200 years has been constructed. This has further been connected to an independent proxy for summer temperature using the well-known ‘Liestøl- equation’, as well as the D/A-ratio, resulting in winter precipitation estimates throughout the recorded period. The extremely high sedimentation rates measured in the sediment cores (0.15–0.45 cm/yr) allow us to draw an analogy to instrumental data from nearby meteorological stations, which strongly supports our approach. We have identified that both the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) were periods of high glacier activity in Lofoten. It is proposed that the advancing glaciers during both periods were caused mainly by an increase in winter precipitation, in relation to an increase in the strength of the westerlies. In Paper II we investigate the aeolian activity at a coastal dunefield on Andøya in Vesterålen. The study is based on a combination of geomorphological mapping, a lacustrine sediment record from the distal lake Latjønna (14.5 m a.s.l.) and a foredune stratigraphy. The lake sediment record was analysed by high-resolution ... Doctoral or Postdoctoral Thesis Andøya glacier Lofoten Northern Norway Vesterålen University of Bergen: Bergen Open Research Archive (BORA-UiB) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Ela ENVELOPE(9.642,9.642,63.170,63.170) Kveitvikvatnet ENVELOPE(14.831,14.831,68.301,68.301) Lofoten Norway Vesterålen ENVELOPE(14.939,14.939,68.754,68.754) The Holocene 26 6 917 934 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
This thesis investigates Holocene storminess and climate change reconstructed from lacustrine sediments from the Lofoten-Vesterålen archipelago in northern Norway (68–69°N, 12–16°E). The present thesis consists of an introduction and three individual papers in studying different perspectives of aeolian (wind) activity reconstructed from (I) glacier fluctuations, (II) coastal dunefield dynamics and (III) variations in aeolian sand influx from three different lake sediment basins. Paper I presents the first high-resolution late-Holocene glacier record from Lofoten. The study is based on glacial geomorphological mapping and analyses of sediment cores from lake Kveitvikvatnet (30.1 m a.s.l.), which currently receives meltwater from three small cirque glaciers. By combining selected sediment proxies to glacier advances of known ages, a continuous curve of the glaciers equilibrium-line altitude (ELA) over the last 1200 years has been constructed. This has further been connected to an independent proxy for summer temperature using the well-known ‘Liestøl- equation’, as well as the D/A-ratio, resulting in winter precipitation estimates throughout the recorded period. The extremely high sedimentation rates measured in the sediment cores (0.15–0.45 cm/yr) allow us to draw an analogy to instrumental data from nearby meteorological stations, which strongly supports our approach. We have identified that both the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) were periods of high glacier activity in Lofoten. It is proposed that the advancing glaciers during both periods were caused mainly by an increase in winter precipitation, in relation to an increase in the strength of the westerlies. In Paper II we investigate the aeolian activity at a coastal dunefield on Andøya in Vesterålen. The study is based on a combination of geomorphological mapping, a lacustrine sediment record from the distal lake Latjønna (14.5 m a.s.l.) and a foredune stratigraphy. The lake sediment record was analysed by high-resolution ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Nielsen, Pål Ringkjøb |
spellingShingle |
Nielsen, Pål Ringkjøb Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
author_facet |
Nielsen, Pål Ringkjøb |
author_sort |
Nielsen, Pål Ringkjøb |
title |
Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
title_short |
Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
title_full |
Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
title_fullStr |
Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
title_full_unstemmed |
Holocene storminess and climate change in Lofoten and Vesteralen, northern Norway |
title_sort |
holocene storminess and climate change in lofoten and vesteralen, northern norway |
publisher |
The University of Bergen |
publishDate |
2016 |
url |
https://hdl.handle.net/1956/12086 |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(14.831,14.831,68.301,68.301) ENVELOPE(14.939,14.939,68.754,68.754) |
geographic |
Andøya Ela Kveitvikvatnet Lofoten Norway Vesterålen |
geographic_facet |
Andøya Ela Kveitvikvatnet Lofoten Norway Vesterålen |
genre |
Andøya glacier Lofoten Northern Norway Vesterålen |
genre_facet |
Andøya glacier Lofoten Northern Norway Vesterålen |
op_relation |
Paper I: Nielsen, P.R., Balascio, N.L., Dahl, S.O., Jansen, H.L., Støren, E.W.N., Bradley, R.S. 2016: A high-resolution 1200-year lacustrine record of glacier and climate fluctuations in Lofoten, northern Norway. The Holocene. This article is not available in BORA. The published version is available at: 10.1177/0959683615622551 Paper II: Nielsen, P.R., Dahl, S.O., Jansen, H.L.: Mid- to late Holocene aeolian activity recorded in a coastal dunefield and lacustrine sediments on Andøya, northern Norway. This article is not available in BORA. The published version is available at: 10.1177/0959683616640050 Paper III: Nielsen, P.R., Dahl, S.O., Jansen, H.L., Støren, E.W.N.: Holocene aeolian sedimentation and episodic events recorded in lacustrine sediments on Langøya in Vesterålen, northern Norway. Submitted to Quaternary Science Reviews, December 3, 2015. Manuscript. This article is not available in BORA. urn:isbn:978-82-308-3317-9 https://hdl.handle.net/1956/12086 cristin:1372417 |
op_rights |
Copyright the author. All rights reserved. |
op_doi |
https://doi.org/10.1177/095968361562255110.1177/0959683616640050 |
container_title |
The Holocene |
container_volume |
26 |
container_issue |
6 |
container_start_page |
917 |
op_container_end_page |
934 |
_version_ |
1766387546595524608 |