Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica
Palaeoclimate changes, such as the Medieval Climate Anomaly and the Little Ice Age, are well-defined in the Northern Hemisphere during the past 2000 years. In contrast, these anomalies appear to be either absent, or less well-defined, in high-latitude regions of the Southern Hemisphere. Here, we inf...
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2014
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ftvliz:oai:oma.vliz.be:244452 2023-05-15T13:54:14+02:00 Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica Tavernier, I. Verleyen, E. Hodgson, D.A. Heirman, K. Roberts, S.J. Imura, S. Kudoh, S. Sabbe, K. De Batist, M. Vyverman, W. 2014 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=244452 en eng info:eu-repo/semantics/altIdentifier/wos/000344735300014 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1017/S0954102014000029 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=244452 info:eu-repo/semantics/restrictedAccess %3Ci%3EAntarctic+Science+26%285%29%3C%2Fi%3E%3A+585-598.+%3Ca+href%3D%22http%3A%2F%2Fdx.doi.org%2F10.1017%2FS0954102014000029%22+target%3D%22_blank%22%3Ehttp%3A%2F%2Fdx.doi.org%2F10.1017%2FS0954102014000029%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftvliz https://doi.org/10.1017/S0954102014000029 2022-05-01T10:22:58Z Palaeoclimate changes, such as the Medieval Climate Anomaly and the Little Ice Age, are well-defined in the Northern Hemisphere during the past 2000 years. In contrast, these anomalies appear to be either absent, or less well-defined, in high-latitude regions of the Southern Hemisphere. Here, we inferred environmental changes during the past two millennia from proxies in a sediment core from Mago Ike, an East Antarctic lake in Skarvsnes (Lützow Holm Bay). Variations in lake primary production were inferred from fossil pigments, sedimentological and geochemical proxies and combined with absolute diatom counts to infer past diatom productivity and community changes. Three distinct stratigraphic zones were recognized, resulting from a shift from marine to lacustrine conditions with a clear transition zone in between. The presence of open-water marine diatoms indicates a coastal zone seasonally free of sea ice between c. 2120–1500 cal yr bp. Subsequently, the lake became isolated from the ocean due to isostatic uplift. Freshwater conditions were established from c. 1120 cal yr bp onwards after which the proxies are considered highly sensitive to temperature changes. There is no evidence for a Medieval Climate Anomaly, Little Ice Age or twentieth century warming in our lake sediment record suggesting that studies that have imposed Northern Hemisphere climate anomalies onto Southern Hemisphere palaeoclimate records should be treated with caution. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic East Antarctica Lützow-Holm Bay ENVELOPE(38.000,38.000,-69.500,-69.500) Skarvsnes ENVELOPE(39.667,39.667,-69.467,-69.467) Mago Ike ENVELOPE(39.633,39.633,-69.473,-69.473) Antarctic Science 26 5 585 598 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
Palaeoclimate changes, such as the Medieval Climate Anomaly and the Little Ice Age, are well-defined in the Northern Hemisphere during the past 2000 years. In contrast, these anomalies appear to be either absent, or less well-defined, in high-latitude regions of the Southern Hemisphere. Here, we inferred environmental changes during the past two millennia from proxies in a sediment core from Mago Ike, an East Antarctic lake in Skarvsnes (Lützow Holm Bay). Variations in lake primary production were inferred from fossil pigments, sedimentological and geochemical proxies and combined with absolute diatom counts to infer past diatom productivity and community changes. Three distinct stratigraphic zones were recognized, resulting from a shift from marine to lacustrine conditions with a clear transition zone in between. The presence of open-water marine diatoms indicates a coastal zone seasonally free of sea ice between c. 2120–1500 cal yr bp. Subsequently, the lake became isolated from the ocean due to isostatic uplift. Freshwater conditions were established from c. 1120 cal yr bp onwards after which the proxies are considered highly sensitive to temperature changes. There is no evidence for a Medieval Climate Anomaly, Little Ice Age or twentieth century warming in our lake sediment record suggesting that studies that have imposed Northern Hemisphere climate anomalies onto Southern Hemisphere palaeoclimate records should be treated with caution. |
format |
Article in Journal/Newspaper |
author |
Tavernier, I. Verleyen, E. Hodgson, D.A. Heirman, K. Roberts, S.J. Imura, S. Kudoh, S. Sabbe, K. De Batist, M. Vyverman, W. |
spellingShingle |
Tavernier, I. Verleyen, E. Hodgson, D.A. Heirman, K. Roberts, S.J. Imura, S. Kudoh, S. Sabbe, K. De Batist, M. Vyverman, W. Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
author_facet |
Tavernier, I. Verleyen, E. Hodgson, D.A. Heirman, K. Roberts, S.J. Imura, S. Kudoh, S. Sabbe, K. De Batist, M. Vyverman, W. |
author_sort |
Tavernier, I. |
title |
Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
title_short |
Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
title_full |
Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
title_fullStr |
Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
title_full_unstemmed |
Absence of a Medieval climate anomaly, Little Ice Age and twentieth century warming in Skarvsnes, Lützow Holm Bay, East Antarctica |
title_sort |
absence of a medieval climate anomaly, little ice age and twentieth century warming in skarvsnes, lützow holm bay, east antarctica |
publishDate |
2014 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=244452 |
long_lat |
ENVELOPE(38.000,38.000,-69.500,-69.500) ENVELOPE(39.667,39.667,-69.467,-69.467) ENVELOPE(39.633,39.633,-69.473,-69.473) |
geographic |
Antarctic East Antarctica Lützow-Holm Bay Skarvsnes Mago Ike |
geographic_facet |
Antarctic East Antarctica Lützow-Holm Bay Skarvsnes Mago Ike |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000344735300014 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1017/S0954102014000029 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=244452 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/S0954102014000029 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
5 |
container_start_page |
585 |
op_container_end_page |
598 |
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1766259925209579520 |