Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake
Late Holocene changes in the ultraviolet radiation (UVR) penetration in a lake in the Larsemann Hills (East Antarctica) were reconstructed using sediment core proxies based on fossil pigments (scytonemins and its derivatives) and siliceous microfossils. The influence of changes in lake depth on the...
Published in: | Journal of Paleolimnology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Springer
2005
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/2034/ https://doi.org/10.1007/s10933-005-4402-0 |
id |
ftnerc:oai:nora.nerc.ac.uk:2034 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:2034 2024-06-09T07:40:57+00:00 Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim 2005 http://nora.nerc.ac.uk/id/eprint/2034/ https://doi.org/10.1007/s10933-005-4402-0 unknown Springer Verleyen, Elie; Hodgson, Dominic A. orcid:0000-0002-3841-3746 Sabbe, Koen; Vyverman, Wim. 2005 Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake. Journal of Paleolimnology, 34 (2). 191-202. https://doi.org/10.1007/s10933-005-4402-0 <https://doi.org/10.1007/s10933-005-4402-0> Ecology and Environment Earth Sciences Publication - Article PeerReviewed 2005 ftnerc https://doi.org/10.1007/s10933-005-4402-0 2024-05-15T08:42:16Z Late Holocene changes in the ultraviolet radiation (UVR) penetration in a lake in the Larsemann Hills (East Antarctica) were reconstructed using sediment core proxies based on fossil pigments (scytonemins and its derivatives) and siliceous microfossils. The influence of changes in lake depth on the UVR proxy was excluded by applying a correction, based on the non-linear relation between modern scytonemin concentrations and lake depth in a regional reference data set, and the record of past lake depths inferred using a diatom based transfer function in the sediment core. Results showed four well-defined maxima in the UVR proxy during the last 1600–1800 years, centred around 1820–1780, 1580–1490, 790–580 and 680–440 AD. Several mechanisms may account for these observed changes in UVR penetration, including past variability in cloud cover, atmospheric turbidity, ozone column depth, snow cover on the lake ice, DOM concentrations and lake-ice thickness and transparency resulting from temperature fluctuations. Although some gaps remain in our knowledge of scytonemin production in relation to the limnology of Antarctic lakes, the results highlight the importance and potential of the sediments in these highly transparent water bodies as archives of changes in past UVR receipt at the Earth’s surface. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Journal of Paleolimnology 34 2 191 202 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Ecology and Environment Earth Sciences |
spellingShingle |
Ecology and Environment Earth Sciences Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
topic_facet |
Ecology and Environment Earth Sciences |
description |
Late Holocene changes in the ultraviolet radiation (UVR) penetration in a lake in the Larsemann Hills (East Antarctica) were reconstructed using sediment core proxies based on fossil pigments (scytonemins and its derivatives) and siliceous microfossils. The influence of changes in lake depth on the UVR proxy was excluded by applying a correction, based on the non-linear relation between modern scytonemin concentrations and lake depth in a regional reference data set, and the record of past lake depths inferred using a diatom based transfer function in the sediment core. Results showed four well-defined maxima in the UVR proxy during the last 1600–1800 years, centred around 1820–1780, 1580–1490, 790–580 and 680–440 AD. Several mechanisms may account for these observed changes in UVR penetration, including past variability in cloud cover, atmospheric turbidity, ozone column depth, snow cover on the lake ice, DOM concentrations and lake-ice thickness and transparency resulting from temperature fluctuations. Although some gaps remain in our knowledge of scytonemin production in relation to the limnology of Antarctic lakes, the results highlight the importance and potential of the sediments in these highly transparent water bodies as archives of changes in past UVR receipt at the Earth’s surface. |
format |
Article in Journal/Newspaper |
author |
Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
author_facet |
Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
author_sort |
Verleyen, Elie |
title |
Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
title_short |
Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
title_full |
Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
title_fullStr |
Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
title_full_unstemmed |
Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake |
title_sort |
late holocene changes in ultraviolet radiation penetration recorded in an east antarctic lake |
publisher |
Springer |
publishDate |
2005 |
url |
http://nora.nerc.ac.uk/id/eprint/2034/ https://doi.org/10.1007/s10933-005-4402-0 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
Antarctic East Antarctica Larsemann Hills |
geographic_facet |
Antarctic East Antarctica Larsemann Hills |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_relation |
Verleyen, Elie; Hodgson, Dominic A. orcid:0000-0002-3841-3746 Sabbe, Koen; Vyverman, Wim. 2005 Late Holocene changes in ultraviolet radiation penetration recorded in an East Antarctic lake. Journal of Paleolimnology, 34 (2). 191-202. https://doi.org/10.1007/s10933-005-4402-0 <https://doi.org/10.1007/s10933-005-4402-0> |
op_doi |
https://doi.org/10.1007/s10933-005-4402-0 |
container_title |
Journal of Paleolimnology |
container_volume |
34 |
container_issue |
2 |
container_start_page |
191 |
op_container_end_page |
202 |
_version_ |
1801369352717467648 |