Isotopic variation in modern lake waters from western Greenland
The stable-isotope composition of lake waters along Sïndre Strïmfjord in western Greenland have been measured both spatially (coast to ice sheet) and temporally (up to five times between 1998–2000) and the data compared to local climatic information. There is a climatic gradient along Sïndre Strïmfj...
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Online Access: | http://dx.doi.org/10.1191/0959683603hl620rr http://journals.sagepub.com/doi/pdf/10.1191/0959683603hl620rr |
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crsagepubl:10.1191/0959683603hl620rr 2024-04-28T08:09:43+00:00 Isotopic variation in modern lake waters from western Greenland Leng, Melanie J. Anderson, N. John 2003 http://dx.doi.org/10.1191/0959683603hl620rr http://journals.sagepub.com/doi/pdf/10.1191/0959683603hl620rr en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 13, issue 4, page 605-611 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2003 crsagepubl https://doi.org/10.1191/0959683603hl620rr 2024-04-09T08:02:08Z The stable-isotope composition of lake waters along Sïndre Strïmfjord in western Greenland have been measured both spatially (coast to ice sheet) and temporally (up to five times between 1998–2000) and the data compared to local climatic information. There is a climatic gradient along Sïndre Strïmfjord, with the head of the fjord characterised by a low Arctic continental climate, while the coast has a more maritime climate (increased precipitation and reduced annual temperature range). The change in climate from continental to maritime is reflected in the isotopic composition of the lakes. The inland lakes have δ 18 O and dD values which lie on evaporation trends away from meteoric water composition. The coastal lakes have δ 18 O and dD compositions close to meteoric water. Short-term seasonal trends are superimposed on longer term variation. For example, the relatively dry years (precipitation lower than the long-term annual mean) of 1998 and 1999 are seen in the smaller lakes as isotopic enrichment, but the larger lakes are buffered in their response to short-term changes. The small coastal lakes tend to have depleted δ 13 C derived predominantly from organic material, while the inland lakes have contributions from both organic carbon and from exchange with isotopically heavier atmospheric CO 2 . This study demonstrates the importance of characterizing local hydrological settings in the interpretation of lacustrine isotope records. In the Arctic, this type of information is especially useful for identifying lakes that have the potential to record arid intervals since precipitation/evaporation adjustments, especially toward greater aridity, may not be recorded in the Greenland ice-core records. Article in Journal/Newspaper Arctic Greenland Greenland ice core ice core Ice Sheet SAGE Publications The Holocene 13 4 605 611 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Leng, Melanie J. Anderson, N. John Isotopic variation in modern lake waters from western Greenland |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
The stable-isotope composition of lake waters along Sïndre Strïmfjord in western Greenland have been measured both spatially (coast to ice sheet) and temporally (up to five times between 1998–2000) and the data compared to local climatic information. There is a climatic gradient along Sïndre Strïmfjord, with the head of the fjord characterised by a low Arctic continental climate, while the coast has a more maritime climate (increased precipitation and reduced annual temperature range). The change in climate from continental to maritime is reflected in the isotopic composition of the lakes. The inland lakes have δ 18 O and dD values which lie on evaporation trends away from meteoric water composition. The coastal lakes have δ 18 O and dD compositions close to meteoric water. Short-term seasonal trends are superimposed on longer term variation. For example, the relatively dry years (precipitation lower than the long-term annual mean) of 1998 and 1999 are seen in the smaller lakes as isotopic enrichment, but the larger lakes are buffered in their response to short-term changes. The small coastal lakes tend to have depleted δ 13 C derived predominantly from organic material, while the inland lakes have contributions from both organic carbon and from exchange with isotopically heavier atmospheric CO 2 . This study demonstrates the importance of characterizing local hydrological settings in the interpretation of lacustrine isotope records. In the Arctic, this type of information is especially useful for identifying lakes that have the potential to record arid intervals since precipitation/evaporation adjustments, especially toward greater aridity, may not be recorded in the Greenland ice-core records. |
format |
Article in Journal/Newspaper |
author |
Leng, Melanie J. Anderson, N. John |
author_facet |
Leng, Melanie J. Anderson, N. John |
author_sort |
Leng, Melanie J. |
title |
Isotopic variation in modern lake waters from western Greenland |
title_short |
Isotopic variation in modern lake waters from western Greenland |
title_full |
Isotopic variation in modern lake waters from western Greenland |
title_fullStr |
Isotopic variation in modern lake waters from western Greenland |
title_full_unstemmed |
Isotopic variation in modern lake waters from western Greenland |
title_sort |
isotopic variation in modern lake waters from western greenland |
publisher |
SAGE Publications |
publishDate |
2003 |
url |
http://dx.doi.org/10.1191/0959683603hl620rr http://journals.sagepub.com/doi/pdf/10.1191/0959683603hl620rr |
genre |
Arctic Greenland Greenland ice core ice core Ice Sheet |
genre_facet |
Arctic Greenland Greenland ice core ice core Ice Sheet |
op_source |
The Holocene volume 13, issue 4, page 605-611 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0959683603hl620rr |
container_title |
The Holocene |
container_volume |
13 |
container_issue |
4 |
container_start_page |
605 |
op_container_end_page |
611 |
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1797577968435855360 |