Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces
Sea level cycles recorded by coral terraces at Huon Peninsula (HP) in Papua New Guinea match rapid climate changes that occurred between 30,000 and 65,000 years ago, seen in Greenland ice cores and marine sediments. Each cycle of 6000-7000 years ended with a sea level rise of 10-15 m lasting 1000-20...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/92308 2024-01-14T10:07:17+01:00 Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces Chappell, John http://hdl.handle.net/1885/92308 https://doi.org/10.1016/S0277-3791(01)00141-X https://openresearch-repository.anu.edu.au/bitstream/1885/92308/5/MigratedxPub23361_RSD_2002.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/92308/7/01_Chappell_Sea_level_changes_forced_ice_2002.pdf.jpg unknown Pergamon-Elsevier Ltd 0277-3791 http://hdl.handle.net/1885/92308 doi:10.1016/S0277-3791(01)00141-X https://openresearch-repository.anu.edu.au/bitstream/1885/92308/5/MigratedxPub23361_RSD_2002.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/92308/7/01_Chappell_Sea_level_changes_forced_ice_2002.pdf.jpg Quaternary Science Reviews Keywords: Climate change Isotopes Oceanography Sediments Glacial cycle Sea level coral ice isotopic analysis Last Glacial paleoclimate Quaternary sea level change Papua New Guinea Anthozoa Journal article ftanucanberra https://doi.org/10.1016/S0277-3791(01)00141-X 2023-12-15T09:37:39Z Sea level cycles recorded by coral terraces at Huon Peninsula (HP) in Papua New Guinea match rapid climate changes that occurred between 30,000 and 65,000 years ago, seen in Greenland ice cores and marine sediments. Each cycle of 6000-7000 years ended with a sea level rise of 10-15 m lasting 1000-2000 years, following a longer period of falling sea level. Precise dating shows that each rise corresponds to a "Heinrich" episode of ice-rafted detritus in north Atlantic, signalling massive ice outbreak from north America. Sea level may be the trigger that forced near-synchronous breakouts of ice from north America and eastern Greenland. The HP sea level changes also correspond to similar cycles in benthic oxygen isotopes reported from the north Atlantic, which are too large to be explained entirely in terms of ice volumes. Jointly, the sea level and isotope records suggest that the north Atlantic deep ocean cooled as sea level fell and warmed as sea level rose, in each 6000-year cycle. Article in Journal/Newspaper Greenland Greenland ice cores North Atlantic Australian National University: ANU Digital Collections Greenland Huon ENVELOPE(-57.998,-57.998,-63.367,-63.367) Quaternary Science Reviews 21 10 1229 1240 |
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Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Climate change Isotopes Oceanography Sediments Glacial cycle Sea level coral ice isotopic analysis Last Glacial paleoclimate Quaternary sea level change Papua New Guinea Anthozoa |
spellingShingle |
Keywords: Climate change Isotopes Oceanography Sediments Glacial cycle Sea level coral ice isotopic analysis Last Glacial paleoclimate Quaternary sea level change Papua New Guinea Anthozoa Chappell, John Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
topic_facet |
Keywords: Climate change Isotopes Oceanography Sediments Glacial cycle Sea level coral ice isotopic analysis Last Glacial paleoclimate Quaternary sea level change Papua New Guinea Anthozoa |
description |
Sea level cycles recorded by coral terraces at Huon Peninsula (HP) in Papua New Guinea match rapid climate changes that occurred between 30,000 and 65,000 years ago, seen in Greenland ice cores and marine sediments. Each cycle of 6000-7000 years ended with a sea level rise of 10-15 m lasting 1000-2000 years, following a longer period of falling sea level. Precise dating shows that each rise corresponds to a "Heinrich" episode of ice-rafted detritus in north Atlantic, signalling massive ice outbreak from north America. Sea level may be the trigger that forced near-synchronous breakouts of ice from north America and eastern Greenland. The HP sea level changes also correspond to similar cycles in benthic oxygen isotopes reported from the north Atlantic, which are too large to be explained entirely in terms of ice volumes. Jointly, the sea level and isotope records suggest that the north Atlantic deep ocean cooled as sea level fell and warmed as sea level rose, in each 6000-year cycle. |
format |
Article in Journal/Newspaper |
author |
Chappell, John |
author_facet |
Chappell, John |
author_sort |
Chappell, John |
title |
Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
title_short |
Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
title_full |
Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
title_fullStr |
Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
title_full_unstemmed |
Sea level changes forced ice breakouts in the Last Glacial cycle: new results from coral terraces |
title_sort |
sea level changes forced ice breakouts in the last glacial cycle: new results from coral terraces |
publisher |
Pergamon-Elsevier Ltd |
url |
http://hdl.handle.net/1885/92308 https://doi.org/10.1016/S0277-3791(01)00141-X https://openresearch-repository.anu.edu.au/bitstream/1885/92308/5/MigratedxPub23361_RSD_2002.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/92308/7/01_Chappell_Sea_level_changes_forced_ice_2002.pdf.jpg |
long_lat |
ENVELOPE(-57.998,-57.998,-63.367,-63.367) |
geographic |
Greenland Huon |
geographic_facet |
Greenland Huon |
genre |
Greenland Greenland ice cores North Atlantic |
genre_facet |
Greenland Greenland ice cores North Atlantic |
op_source |
Quaternary Science Reviews |
op_relation |
0277-3791 http://hdl.handle.net/1885/92308 doi:10.1016/S0277-3791(01)00141-X https://openresearch-repository.anu.edu.au/bitstream/1885/92308/5/MigratedxPub23361_RSD_2002.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/92308/7/01_Chappell_Sea_level_changes_forced_ice_2002.pdf.jpg |
op_doi |
https://doi.org/10.1016/S0277-3791(01)00141-X |
container_title |
Quaternary Science Reviews |
container_volume |
21 |
container_issue |
10 |
container_start_page |
1229 |
op_container_end_page |
1240 |
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1788061694473273344 |