A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions
In 1997 a 121 m ice core was retrieved from Lomonosovfonna, the highest ice field in Spitsbergen, Svalbard (1250 m a.s.l.). Radar measurements indicate an ice depth of 126.5 m, and borehole temperature measurements show that the ice is below the melting point, High-resolution sampling of major ions,...
Published in: | Journal of Glaciology |
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Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2001
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Online Access: | https://hdl.handle.net/11370/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://research.rug.nl/en/publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://doi.org/10.3189/172756501781832313 |
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ftunigroningenpu:oai:pure.rug.nl:publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 2024-06-23T07:51:39+00:00 A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions Isaksson, E Pohjola, V Jauhiainen, T Moore, J Pinglot, JM Vaikmae, R van de Wal, R S W Ivask, J Karlof, L Martma, T Meijer, H A J Mulvaney, R Thomassen, M van den Broeke, M 2001 https://hdl.handle.net/11370/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://research.rug.nl/en/publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://doi.org/10.3189/172756501781832313 eng eng https://research.rug.nl/en/publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 info:eu-repo/semantics/closedAccess Isaksson , E , Pohjola , V , Jauhiainen , T , Moore , J , Pinglot , JM , Vaikmae , R , van de Wal , R S W , Ivask , J , Karlof , L , Martma , T , Meijer , H A J , Mulvaney , R , Thomassen , M & van den Broeke , M 2001 , ' A new ice-core record from Lomonosovfonna, Svalbard : Viewing the 1920-97 data in relation to present climate and environmental conditions ' , Journal of Glaciology , vol. 47 , no. 157 , pp. 335-345 . https://doi.org/10.3189/172756501781832313 MARINE BOUNDARY-LAYER BIOGENIC SULFUR GREENLAND SPITSBERGEN GLACIERS SNOW AEROSOL RADIOACTIVITY ACCUMULATION SULFATE article 2001 ftunigroningenpu https://doi.org/10.3189/172756501781832313 2024-06-03T16:11:09Z In 1997 a 121 m ice core was retrieved from Lomonosovfonna, the highest ice field in Spitsbergen, Svalbard (1250 m a.s.l.). Radar measurements indicate an ice depth of 126.5 m, and borehole temperature measurements show that the ice is below the melting point, High-resolution sampling of major ions, oxygen isotopes and deuterium has been performed on the core, and the results from the uppermost 36 rn suggest that quasi-annual signals are preserved. The 1963 radioactive layer is situated at 18.5-18.95 m, giving a mean annual accumulation of 0.36 m we. for the period 1963-96. The upper 36 rn of the ice core was dated back to 1920 by counting layers provided by the seasonal variations of the ions in addition to using a constant accumulation rate, with thinning by pure shear according to Nye (1963). The stratigraphy does not seem to have been obliterated by meltwater percolation, in contrast to most previous core sites on Svalbard. The anthropogenic influence on the Svalbard environment is illustrated by increased levels of sulphate, nitrate and acidity. Both nitrate and sulphate levels started to increase in the late 1940s, remained high until the late 1980s and have decreased during the last 15 years. The records of delta O-18, MSA (methanesulphonic acid), and melt features along the core agree with the temperature record from Longycarbyen and the sea-ice record from the Barents Sea at a multi-year resolution, suggesting that this ice core reflects local climatic conditions. Article in Journal/Newspaper Barents Sea Greenland ice core Journal of Glaciology Sea ice Svalbard Spitsbergen University of Groningen research database Barents Sea Greenland Lomonosovfonna ENVELOPE(17.663,17.663,78.774,78.774) Svalbard Journal of Glaciology 47 157 335 345 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
MARINE BOUNDARY-LAYER BIOGENIC SULFUR GREENLAND SPITSBERGEN GLACIERS SNOW AEROSOL RADIOACTIVITY ACCUMULATION SULFATE |
spellingShingle |
MARINE BOUNDARY-LAYER BIOGENIC SULFUR GREENLAND SPITSBERGEN GLACIERS SNOW AEROSOL RADIOACTIVITY ACCUMULATION SULFATE Isaksson, E Pohjola, V Jauhiainen, T Moore, J Pinglot, JM Vaikmae, R van de Wal, R S W Ivask, J Karlof, L Martma, T Meijer, H A J Mulvaney, R Thomassen, M van den Broeke, M A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
topic_facet |
MARINE BOUNDARY-LAYER BIOGENIC SULFUR GREENLAND SPITSBERGEN GLACIERS SNOW AEROSOL RADIOACTIVITY ACCUMULATION SULFATE |
description |
In 1997 a 121 m ice core was retrieved from Lomonosovfonna, the highest ice field in Spitsbergen, Svalbard (1250 m a.s.l.). Radar measurements indicate an ice depth of 126.5 m, and borehole temperature measurements show that the ice is below the melting point, High-resolution sampling of major ions, oxygen isotopes and deuterium has been performed on the core, and the results from the uppermost 36 rn suggest that quasi-annual signals are preserved. The 1963 radioactive layer is situated at 18.5-18.95 m, giving a mean annual accumulation of 0.36 m we. for the period 1963-96. The upper 36 rn of the ice core was dated back to 1920 by counting layers provided by the seasonal variations of the ions in addition to using a constant accumulation rate, with thinning by pure shear according to Nye (1963). The stratigraphy does not seem to have been obliterated by meltwater percolation, in contrast to most previous core sites on Svalbard. The anthropogenic influence on the Svalbard environment is illustrated by increased levels of sulphate, nitrate and acidity. Both nitrate and sulphate levels started to increase in the late 1940s, remained high until the late 1980s and have decreased during the last 15 years. The records of delta O-18, MSA (methanesulphonic acid), and melt features along the core agree with the temperature record from Longycarbyen and the sea-ice record from the Barents Sea at a multi-year resolution, suggesting that this ice core reflects local climatic conditions. |
format |
Article in Journal/Newspaper |
author |
Isaksson, E Pohjola, V Jauhiainen, T Moore, J Pinglot, JM Vaikmae, R van de Wal, R S W Ivask, J Karlof, L Martma, T Meijer, H A J Mulvaney, R Thomassen, M van den Broeke, M |
author_facet |
Isaksson, E Pohjola, V Jauhiainen, T Moore, J Pinglot, JM Vaikmae, R van de Wal, R S W Ivask, J Karlof, L Martma, T Meijer, H A J Mulvaney, R Thomassen, M van den Broeke, M |
author_sort |
Isaksson, E |
title |
A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
title_short |
A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
title_full |
A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
title_fullStr |
A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
title_full_unstemmed |
A new ice-core record from Lomonosovfonna, Svalbard:Viewing the 1920-97 data in relation to present climate and environmental conditions |
title_sort |
new ice-core record from lomonosovfonna, svalbard:viewing the 1920-97 data in relation to present climate and environmental conditions |
publishDate |
2001 |
url |
https://hdl.handle.net/11370/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://research.rug.nl/en/publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 https://doi.org/10.3189/172756501781832313 |
long_lat |
ENVELOPE(17.663,17.663,78.774,78.774) |
geographic |
Barents Sea Greenland Lomonosovfonna Svalbard |
geographic_facet |
Barents Sea Greenland Lomonosovfonna Svalbard |
genre |
Barents Sea Greenland ice core Journal of Glaciology Sea ice Svalbard Spitsbergen |
genre_facet |
Barents Sea Greenland ice core Journal of Glaciology Sea ice Svalbard Spitsbergen |
op_source |
Isaksson , E , Pohjola , V , Jauhiainen , T , Moore , J , Pinglot , JM , Vaikmae , R , van de Wal , R S W , Ivask , J , Karlof , L , Martma , T , Meijer , H A J , Mulvaney , R , Thomassen , M & van den Broeke , M 2001 , ' A new ice-core record from Lomonosovfonna, Svalbard : Viewing the 1920-97 data in relation to present climate and environmental conditions ' , Journal of Glaciology , vol. 47 , no. 157 , pp. 335-345 . https://doi.org/10.3189/172756501781832313 |
op_relation |
https://research.rug.nl/en/publications/db8c9f33-a494-4499-9d46-37f4ad16a9c3 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.3189/172756501781832313 |
container_title |
Journal of Glaciology |
container_volume |
47 |
container_issue |
157 |
container_start_page |
335 |
op_container_end_page |
345 |
_version_ |
1802642762713006080 |