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Naafs, Bernhard David A; Hefter, Jens; Ferretti, Patrizia; Stein, Ruediger; Haug, Gerald H (2011): Sea surface temperature estimation for MIS 16 of IODP Site 306-U1313 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.758056, Supplement to: Naafs, BDA et al. (2011): Sea surface temperatures did not control the first occurrence of Hudson Strait Heinrich Events during MIS 16. Paleoceanography, 26, PA4201, https://doi.org/10.1029/2011PA002135

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Abstract:
Hudson Strait (HS) Heinrich Events, ice-rafting events in the North Atlantic originating from the Laurentide ice sheet (LIS), are among the most dramatic examples of millennial-scale climate variability and have a large influence on global climate. However, it is debated as to whether the occurrence of HS Heinrich Events in the (eastern) North Atlantic in the geological record depends on greater ice discharge, or simply from the longer survival of icebergs in cold waters. Using sediments from Integrated Ocean Drilling Program (IODP) Site U1313 in the North Atlantic spanning the period between 960 and 320 ka, we show that sea surface temperatures (SSTs) did not control the first occurrence of HS Heinrich(-like) Events in the sedimentary record. Using mineralogy and organic geochemistry to determine the characteristics of ice-rafting debris (IRD), we detect the first HS Heinrich(-like) Event in our record around 643 ka (Marine Isotope Stage (MIS) 16), which is similar as previously reported for Site U1308. However, the accompanying high-resolution alkenone-based SST record demonstrates that the first HS Heinrich(-like) Event did not coincide with low SSTs. Thus, the HS Heinrich(-like) Events do indicate enhanced ice discharge from the LIS at the end of the Mid-Pleistocene Transition, not simply the survivability of icebergs due to cold conditions in the North Atlantic.
Related to:
Naafs, Bernhard David A (2011): Long-term evolution of (millennial-scale) climate variability in the North Atlantic over the last four million years. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 638, 122 pp, https://doi.org/10.2312/BzPM_0638_2011
Project(s):
Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)
Coverage:
Median Latitude: 41.000009 * Median Longitude: -32.957282 * South-bound Latitude: 41.000000 * West-bound Longitude: -32.957310 * North-bound Latitude: 41.000023 * East-bound Longitude: -32.957023
Date/Time Start: 2004-03-28T00:00:00 * Date/Time End: 2004-04-02T00:00:00
Event(s):
306-U1313 * Latitude: 41.000000 * Longitude: -32.957300 * Date/Time Start: 2004-03-28T00:00:00 * Date/Time End: 2004-04-02T00:00:00 * Elevation: -3426.0 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE)
306-U1313A * Latitude: 41.000019 * Longitude: -32.957310 * Elevation: -3412.3 m * Recovery: 319.64 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 308.6 m cored; 103.6 % recovered; 0 m drilled; 308.6 m penetrated
306-U1313B * Latitude: 41.000023 * Longitude: -32.957300 * Elevation: -3413.5 m * Recovery: 306.54 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 300.4 m cored; 102 % recovered; 2 m drilled; 302.4 m penetrated
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

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Datasets listed in this publication series

  1. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Biomarker abundance in MIS 16 of IODP Site 306-U1313. https://doi.org/10.1594/PANGAEA.757948
  2. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Stable oxygen isotope ratios of planktonic foraminifera in MIS 16 of IODP Site 306-U1313. https://doi.org/10.1594/PANGAEA.762822
  3. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Dolomite/calcite and quartz/calcite ratios of MIS 16 sediments of IODP Site 306-U1313. https://doi.org/10.1594/PANGAEA.757950
  4. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Sea surface temperatures for MIS 16 of IODP Site 306-U1313. https://doi.org/10.1594/PANGAEA.757949
  5. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Stable oxygen isotope and Mg/Ca ratios of Globigerina bulloides in MIS 16 of IODP Hole 306-U1313A. https://doi.org/10.1594/PANGAEA.762824
  6. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Stable oxygen isotope ratios of Globigerinoides ruber in MIS 16 of IODP Hole 306-U1313B. https://doi.org/10.1594/PANGAEA.762823
  7. Naafs, BDA; Hefter, J; Ferretti, P et al. (2011): Stable oxygen isotope of benthic foraminifera in MIS 16 of IODP Hole 306-U1313D. https://doi.org/10.1594/PANGAEA.762826