A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene
Records of stable oxygen isotope variations from a variety of proxies have been used in palaeoclimatic research since the 1950’s. Several studies have applied stable isotope analysis of lake sediments to reconstruct past climate changes in central and northern Sweden, including a study of Lake Blekt...
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Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK)
2014
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ftstockholmuniv:oai:DiVA.org:su-105982 2023-05-15T17:44:42+02:00 A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene Larsson, Simon 2014 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-105982 eng eng Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK) http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-105982 info:eu-repo/semantics/openAccess stable isotope oxygen carbonate humidity sweden holocene Student thesis info:eu-repo/semantics/bachelorThesis text 2014 ftstockholmuniv 2023-02-23T21:36:43Z Records of stable oxygen isotope variations from a variety of proxies have been used in palaeoclimatic research since the 1950’s. Several studies have applied stable isotope analysis of lake sediments to reconstruct past climate changes in central and northern Sweden, including a study of Lake Blektjärnen in Jämtland, central Sweden, by Andersson (2010). In this study, sediments from that same lake were sampled for stable isotope analysis of bulk carbonates with the aim to improve the resolution of the isotopic record for the last two millennia. The results indicate a shift from relatively drier to wetter conditions between ~2,300–1,300 cal. years BP, generally wet conditions close to the Medieval Warm Period (~1,000–750 cal. years BP) and generally dry conditions during the Little Ice Age (~550–150 cal. years BP). These results are in agreement with previous palaeoclimatic reconstructions in the region. The isotopic record of Lake Blektjärnen was completed for the last ~2,350 years at a resolution of ~15 years per sample, three times higher than that of the previous study, displaying the advantages of bulk carbonate sampling for stable isotope analysis and providing a high-resolution dataset on humidity changes in central Sweden during the late Holocene. Bachelor Thesis Northern Sweden Stockholm University: Publications (DiVA) |
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Open Polar |
collection |
Stockholm University: Publications (DiVA) |
op_collection_id |
ftstockholmuniv |
language |
English |
topic |
stable isotope oxygen carbonate humidity sweden holocene |
spellingShingle |
stable isotope oxygen carbonate humidity sweden holocene Larsson, Simon A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
topic_facet |
stable isotope oxygen carbonate humidity sweden holocene |
description |
Records of stable oxygen isotope variations from a variety of proxies have been used in palaeoclimatic research since the 1950’s. Several studies have applied stable isotope analysis of lake sediments to reconstruct past climate changes in central and northern Sweden, including a study of Lake Blektjärnen in Jämtland, central Sweden, by Andersson (2010). In this study, sediments from that same lake were sampled for stable isotope analysis of bulk carbonates with the aim to improve the resolution of the isotopic record for the last two millennia. The results indicate a shift from relatively drier to wetter conditions between ~2,300–1,300 cal. years BP, generally wet conditions close to the Medieval Warm Period (~1,000–750 cal. years BP) and generally dry conditions during the Little Ice Age (~550–150 cal. years BP). These results are in agreement with previous palaeoclimatic reconstructions in the region. The isotopic record of Lake Blektjärnen was completed for the last ~2,350 years at a resolution of ~15 years per sample, three times higher than that of the previous study, displaying the advantages of bulk carbonate sampling for stable isotope analysis and providing a high-resolution dataset on humidity changes in central Sweden during the late Holocene. |
format |
Bachelor Thesis |
author |
Larsson, Simon |
author_facet |
Larsson, Simon |
author_sort |
Larsson, Simon |
title |
A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
title_short |
A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
title_full |
A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
title_fullStr |
A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
title_full_unstemmed |
A high-resolution oxygen isotope reconstruction of humidity changes in central Sweden during the late Holocene |
title_sort |
high-resolution oxygen isotope reconstruction of humidity changes in central sweden during the late holocene |
publisher |
Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK) |
publishDate |
2014 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-105982 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-105982 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766146982800261120 |