(Appendix 1) Coral analysis and isostatic rebound effects from different Holes of IODP Expedition 310, supplement to: Deschamps, Pierre; Durand, Nicolas; Bard, Édouard; Hamelin, Bruno; Camoin, Gilbert; Thomas, Alexander L; Henderson, Gideon M; Okuno, Junichi; Yokoyama, Yusuke (2012): Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago. Nature, 483, 559-564


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.

DOI http://dx.doi.org/doi:10.1594/PANGAEA.788130
Metadata Access http://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite3&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.788130
Creator Henderson, Gideon M;Bard, Édouard;Camoin, Gilbert;Okuno, Junichi;Hamelin, Bruno;Yokoyama, Yusuke;Deschamps, Pierre;Durand, Nicolas;Thomas, Alexander L
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2012
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Discipline Earth System Research
Spatial Coverage (18S-17S,150W-149W)
Temporal Point 2005-10-07T11:59:59Z