The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland
Abstract: 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 ve times between 1998–2000) and the data compared to local climatic information. There is a climatic gradient along Sïndre...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1027.8940 2023-05-15T15:00:34+02:00 The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland Melanie J. Leng N. John Anderson The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1027.8940 http://hol.sagepub.com/content/13/4/605.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1027.8940 http://hol.sagepub.com/content/13/4/605.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hol.sagepub.com/content/13/4/605.full.pdf Key words Stable isotopes d18O dD d13C lakes climate modern analogues Greenland text 2001 ftciteseerx 2016-10-30T00:05:24Z Abstract: 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 ve 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 re ected in the isotopic composition of the lakes. The inland lakes have d18O and dD values which lie on evaporation trends away from meteoric water composition. The coastal lakes have d18O 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 d13C derived predominantly from organic material, while the inland lakes have contributions from both organic carbon and from exchange with isotopically heavier atmospheric CO2. 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. Text Arctic Greenland Greenland ice core ice core Ice Sheet Unknown Arctic Greenland |
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English |
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Key words Stable isotopes d18O dD d13C lakes climate modern analogues Greenland |
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Key words Stable isotopes d18O dD d13C lakes climate modern analogues Greenland Melanie J. Leng N. John Anderson The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
topic_facet |
Key words Stable isotopes d18O dD d13C lakes climate modern analogues Greenland |
description |
Abstract: 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 ve 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 re ected in the isotopic composition of the lakes. The inland lakes have d18O and dD values which lie on evaporation trends away from meteoric water composition. The coastal lakes have d18O 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 d13C derived predominantly from organic material, while the inland lakes have contributions from both organic carbon and from exchange with isotopically heavier atmospheric CO2. 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. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Melanie J. Leng N. John Anderson |
author_facet |
Melanie J. Leng N. John Anderson |
author_sort |
Melanie J. Leng |
title |
The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
title_short |
The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
title_full |
The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
title_fullStr |
The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
title_full_unstemmed |
The Holocene 13,4 (2003) pp. 605–611 Isotopic variation in modern lake waters from western Greenland |
title_sort |
holocene 13,4 (2003) pp. 605–611 isotopic variation in modern lake waters from western greenland |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1027.8940 http://hol.sagepub.com/content/13/4/605.full.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Greenland ice core ice core Ice Sheet |
genre_facet |
Arctic Greenland Greenland ice core ice core Ice Sheet |
op_source |
http://hol.sagepub.com/content/13/4/605.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1027.8940 http://hol.sagepub.com/content/13/4/605.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766332654348664832 |