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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago Deschamps, P.; Durand, N.; Bard, E.; Hamelin, B.; Camoin, G.; Thomas, A.L.; Henderson, G.M.; Okuno, J.; Yokoyama, Y. (2012). Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago. Nature (Lond.) 483(7391): 559-564. dx.doi.org/10.1038/nature10902 In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 233750 [ aanvragen ]

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Trefwoorden

Ice sheets Temporal variations > Long-term changes > Sea level changes Marien/Kust

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Auteurs		Top
Deschamps, P. Durand, N. Bard, E.	Hamelin, B. Camoin, G. Thomas, A.L.	Henderson, G.M. Okuno, J. Yokoyama, Y.

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Abstract

Past sea-level records provide invaluable information about the response of ice sheets to climate forcing. Some such records suggest that the last deglaciation was punctuated by a dramatic period of sea-level rise, of about 20?metres, in less than 500 years. Controversy about the amplitude and timing of this meltwater pulse (MWP-1A) has, however, led to uncertainty about the source of the melt water and its temporal and causal relationships with the abrupt climate changes of the deglaciation. Here we show that MWP-1A started no earlier than 14,650 years ago and ended before 14,310 years ago, making it coeval with the Bølling warming. Our results, based on corals drilled offshore from Tahiti during Integrated Ocean Drilling Project Expedition 310, reveal that the increase in sea level at Tahiti was between 12 and 22 metres, with a most probable value between 14 and 18 metres, establishing a significant meltwater contribution from the Southern Hemisphere. This implies that the rate of eustatic sea-level rise exceeded 40 millimetres per year during MWP-1A.

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