Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change
Sediment cores from three lakes (Moss, Sombre and Heywood) in the maritime Antarctic (Signy Island, South Orkney Islands) have been successfully dated radiometrically by210Pb and137Cs. The core inventories of both fallout radionuclides are an order of magnitude higher than that which can be supporte...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515395/ https://doi.org/10.1007/BF00678106 |
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ftnerc:oai:nora.nerc.ac.uk:515395 2023-05-15T13:49:33+02:00 Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change Appleby, P. G. Jones, V. J. Ellis-Evans, J. C. 1995-03 http://nora.nerc.ac.uk/id/eprint/515395/ https://doi.org/10.1007/BF00678106 unknown Springer Appleby, P. G.; Jones, V. J.; Ellis-Evans, J. C. 1995 Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change. Journal of Paleolimnology, 13 (2). 179-191. https://doi.org/10.1007/BF00678106 <https://doi.org/10.1007/BF00678106> Publication - Article PeerReviewed 1995 ftnerc https://doi.org/10.1007/BF00678106 2023-02-04T19:44:02Z Sediment cores from three lakes (Moss, Sombre and Heywood) in the maritime Antarctic (Signy Island, South Orkney Islands) have been successfully dated radiometrically by210Pb and137Cs. The core inventories of both fallout radionuclides are an order of magnitude higher than that which can be supported by the direct atmospheric flux at this latitude. The elevated values may be explained by fallout onto the catchment during the winter being delivered directly to the lakes during the annual thaw. Two of the lakes (Sombre and Heywood) show marked increases in sediment accumulation afterc. 1950. This appears to be associated with a documented rise in temperature in the South Orkney Islands, which has caused extensive deglaciation at Signy Island. Article in Journal/Newspaper Antarc* Antarctic Signy Island South Orkney Islands Natural Environment Research Council: NERC Open Research Archive Antarctic South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Heywood ENVELOPE(-59.683,-59.683,-62.317,-62.317) Journal of Paleolimnology 13 2 179 191 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Sediment cores from three lakes (Moss, Sombre and Heywood) in the maritime Antarctic (Signy Island, South Orkney Islands) have been successfully dated radiometrically by210Pb and137Cs. The core inventories of both fallout radionuclides are an order of magnitude higher than that which can be supported by the direct atmospheric flux at this latitude. The elevated values may be explained by fallout onto the catchment during the winter being delivered directly to the lakes during the annual thaw. Two of the lakes (Sombre and Heywood) show marked increases in sediment accumulation afterc. 1950. This appears to be associated with a documented rise in temperature in the South Orkney Islands, which has caused extensive deglaciation at Signy Island. |
format |
Article in Journal/Newspaper |
author |
Appleby, P. G. Jones, V. J. Ellis-Evans, J. C. |
spellingShingle |
Appleby, P. G. Jones, V. J. Ellis-Evans, J. C. Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
author_facet |
Appleby, P. G. Jones, V. J. Ellis-Evans, J. C. |
author_sort |
Appleby, P. G. |
title |
Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
title_short |
Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
title_full |
Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
title_fullStr |
Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
title_full_unstemmed |
Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change |
title_sort |
radiometric dating of lake sediments from signy island (maritime antarctic): evidence of recent climatic change |
publisher |
Springer |
publishDate |
1995 |
url |
http://nora.nerc.ac.uk/id/eprint/515395/ https://doi.org/10.1007/BF00678106 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-59.683,-59.683,-62.317,-62.317) |
geographic |
Antarctic South Orkney Islands Signy Island Heywood |
geographic_facet |
Antarctic South Orkney Islands Signy Island Heywood |
genre |
Antarc* Antarctic Signy Island South Orkney Islands |
genre_facet |
Antarc* Antarctic Signy Island South Orkney Islands |
op_relation |
Appleby, P. G.; Jones, V. J.; Ellis-Evans, J. C. 1995 Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change. Journal of Paleolimnology, 13 (2). 179-191. https://doi.org/10.1007/BF00678106 <https://doi.org/10.1007/BF00678106> |
op_doi |
https://doi.org/10.1007/BF00678106 |
container_title |
Journal of Paleolimnology |
container_volume |
13 |
container_issue |
2 |
container_start_page |
179 |
op_container_end_page |
191 |
_version_ |
1766251605048426496 |