Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons
The sensitivity of terrestrial environments to past changes in heat transport is expected to be manifested in Holocene climate proxy records on millennial to seasonal timescales. Stalagmite formation in the Okshola cave near Fauske (northern Norway) began at about 10.4 ka, soon after the valley was...
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ftdoajarticles:oai:doaj.org/article:464b83b51dc04bc89b9fff6280de6a89 2023-05-15T17:43:26+02:00 Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons H. Linge S.-E. Lauritzen C. Andersson J. K. Hansen R. Ø. Skoglund H. S. Sundqvist 2009-11-01T00:00:00Z https://doaj.org/article/464b83b51dc04bc89b9fff6280de6a89 EN eng Copernicus Publications http://www.clim-past.net/5/667/2009/cp-5-667-2009.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/464b83b51dc04bc89b9fff6280de6a89 Climate of the Past, Vol 5, Iss 4, Pp 667-682 (2009) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2009 ftdoajarticles 2022-12-31T08:46:17Z The sensitivity of terrestrial environments to past changes in heat transport is expected to be manifested in Holocene climate proxy records on millennial to seasonal timescales. Stalagmite formation in the Okshola cave near Fauske (northern Norway) began at about 10.4 ka, soon after the valley was deglaciated. Past monitoring of the cave and surface has revealed stable modern conditions with uniform drip rates, relative humidity and temperature. Stable isotope records from two stalagmites provide time-series spanning from c. 10 380 yr to AD 1997; a banded, multi-coloured stalagmite (Oks82) was formed between 10 380 yr and 5050 yr, whereas a pristine, white stalagmite (FM3) covers the period from ~7500 yr to the present. The stable oxygen isotope (δ 18 O c ), stable carbon isotope (δ 13 C c ), and growth rate records are interpreted as showing i) a negative correlation between cave/surface temperature and δ 18 O c , ii) a positive correlation between wetness and δ 13 C c , and iii) a positive correlation between temperature and growth rate. Following this, the data from Okshola show that the Holocene was characterised by high-variability climate in the early part, low-variability climate in the middle part, and high-variability climate and shifts between two distinct modes in the late part. A total of nine Scandinavian stalagmite δ 18 O c records of comparable dating precision are now available for parts or most of the Holocene. None of them show a clear Holocene thermal optimum, suggesting that they are influenced by annual mean temperature (cave temperature) rather than seasonal temperature. For the last 1000 years, δ 18 O c values display a depletion-enrichment-depletion pattern commonly interpreted as reflecting the conventional view on climate development for the last millennium. Although the δ 18 O c records show similar patterns and amplitudes of change, the main challenges for utilising high-latitude stalagmites as palaeoclimate archives are i) the accuracy of the age models, ii) the ambiguity of the ... Article in Journal/Newspaper Northern Norway Directory of Open Access Journals: DOAJ Articles Fauske ENVELOPE(15.392,15.392,67.259,67.259) Norway |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 H. Linge S.-E. Lauritzen C. Andersson J. K. Hansen R. Ø. Skoglund H. S. Sundqvist Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
The sensitivity of terrestrial environments to past changes in heat transport is expected to be manifested in Holocene climate proxy records on millennial to seasonal timescales. Stalagmite formation in the Okshola cave near Fauske (northern Norway) began at about 10.4 ka, soon after the valley was deglaciated. Past monitoring of the cave and surface has revealed stable modern conditions with uniform drip rates, relative humidity and temperature. Stable isotope records from two stalagmites provide time-series spanning from c. 10 380 yr to AD 1997; a banded, multi-coloured stalagmite (Oks82) was formed between 10 380 yr and 5050 yr, whereas a pristine, white stalagmite (FM3) covers the period from ~7500 yr to the present. The stable oxygen isotope (δ 18 O c ), stable carbon isotope (δ 13 C c ), and growth rate records are interpreted as showing i) a negative correlation between cave/surface temperature and δ 18 O c , ii) a positive correlation between wetness and δ 13 C c , and iii) a positive correlation between temperature and growth rate. Following this, the data from Okshola show that the Holocene was characterised by high-variability climate in the early part, low-variability climate in the middle part, and high-variability climate and shifts between two distinct modes in the late part. A total of nine Scandinavian stalagmite δ 18 O c records of comparable dating precision are now available for parts or most of the Holocene. None of them show a clear Holocene thermal optimum, suggesting that they are influenced by annual mean temperature (cave temperature) rather than seasonal temperature. For the last 1000 years, δ 18 O c values display a depletion-enrichment-depletion pattern commonly interpreted as reflecting the conventional view on climate development for the last millennium. Although the δ 18 O c records show similar patterns and amplitudes of change, the main challenges for utilising high-latitude stalagmites as palaeoclimate archives are i) the accuracy of the age models, ii) the ambiguity of the ... |
format |
Article in Journal/Newspaper |
author |
H. Linge S.-E. Lauritzen C. Andersson J. K. Hansen R. Ø. Skoglund H. S. Sundqvist |
author_facet |
H. Linge S.-E. Lauritzen C. Andersson J. K. Hansen R. Ø. Skoglund H. S. Sundqvist |
author_sort |
H. Linge |
title |
Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
title_short |
Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
title_full |
Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
title_fullStr |
Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
title_full_unstemmed |
Stable isotope records for the last 10 000 years from Okshola cave (Fauske, northern Norway) and regional comparisons |
title_sort |
stable isotope records for the last 10 000 years from okshola cave (fauske, northern norway) and regional comparisons |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/464b83b51dc04bc89b9fff6280de6a89 |
long_lat |
ENVELOPE(15.392,15.392,67.259,67.259) |
geographic |
Fauske Norway |
geographic_facet |
Fauske Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Climate of the Past, Vol 5, Iss 4, Pp 667-682 (2009) |
op_relation |
http://www.clim-past.net/5/667/2009/cp-5-667-2009.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/464b83b51dc04bc89b9fff6280de6a89 |
_version_ |
1766145513787228160 |