Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods
Current consensus places a Southern Hemisphere post-glacial cooling episode earlier than the Younger Dryas in the Northern Hemisphere. New Zealand sequences of glacial moraines and speleothem isotopic data are generally interpreted as supporting the absence of a Southern Hemisphere Younger Dryas. Ra...
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fttriple:oai:gotriple.eu:10670/1.a0addv 2023-05-15T13:58:50+02:00 Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods Holdaway, Richard N. 2021-12-01 https://doi.org/10.5194/cp-2021-154 https://cp.copernicus.org/preprints/cp-2021-154/ en eng doi:10.5194/cp-2021-154 10670/1.a0addv https://cp.copernicus.org/preprints/cp-2021-154/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo socio Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2021 fttriple https://doi.org/10.5194/cp-2021-154 2023-01-22T17:37:46Z Current consensus places a Southern Hemisphere post-glacial cooling episode earlier than the Younger Dryas in the Northern Hemisphere. New Zealand sequences of glacial moraines and speleothem isotopic data are generally interpreted as supporting the absence of a Southern Hemisphere Younger Dryas. Radiocarbon age series of habitat specialist moa (Aves: Dinornithiformes) show, however, that a sudden return to glacial climate in central New Zealand contemporary with the Younger Dryas. The cooling followed significant warming, not cooling, during the period of the Antarctic Cold Reversal. In addition, the moa sequence chronology also shows that the Oruanui (New Zealand) and Mt Takahe (Antarctica) volcanic eruptions were contemporary with abrupt cooling events in New Zealand. The independent high spatial and temporal resolution climate chronology reported here is contrary to an inter-hemispheric post-glacial climate see-saw model. Text Antarc* Antarctic Antarctica Unknown Antarctic Moa ENVELOPE(157.950,157.950,-80.767,-80.767) New Zealand Takahe ENVELOPE(-112.233,-112.233,-76.267,-76.267) The Antarctic |
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geo socio Holdaway, Richard N. Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
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geo socio |
description |
Current consensus places a Southern Hemisphere post-glacial cooling episode earlier than the Younger Dryas in the Northern Hemisphere. New Zealand sequences of glacial moraines and speleothem isotopic data are generally interpreted as supporting the absence of a Southern Hemisphere Younger Dryas. Radiocarbon age series of habitat specialist moa (Aves: Dinornithiformes) show, however, that a sudden return to glacial climate in central New Zealand contemporary with the Younger Dryas. The cooling followed significant warming, not cooling, during the period of the Antarctic Cold Reversal. In addition, the moa sequence chronology also shows that the Oruanui (New Zealand) and Mt Takahe (Antarctica) volcanic eruptions were contemporary with abrupt cooling events in New Zealand. The independent high spatial and temporal resolution climate chronology reported here is contrary to an inter-hemispheric post-glacial climate see-saw model. |
format |
Text |
author |
Holdaway, Richard N. |
author_facet |
Holdaway, Richard N. |
author_sort |
Holdaway, Richard N. |
title |
Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
title_short |
Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
title_full |
Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
title_fullStr |
Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
title_full_unstemmed |
Palaeobiological evidence for Southern Hemisphere Younger Dryas and volcanogenic cold periods |
title_sort |
palaeobiological evidence for southern hemisphere younger dryas and volcanogenic cold periods |
publishDate |
2021 |
url |
https://doi.org/10.5194/cp-2021-154 https://cp.copernicus.org/preprints/cp-2021-154/ |
long_lat |
ENVELOPE(157.950,157.950,-80.767,-80.767) ENVELOPE(-112.233,-112.233,-76.267,-76.267) |
geographic |
Antarctic Moa New Zealand Takahe The Antarctic |
geographic_facet |
Antarctic Moa New Zealand Takahe The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-2021-154 10670/1.a0addv https://cp.copernicus.org/preprints/cp-2021-154/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-2021-154 |
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1766267199770591232 |