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Wegwerth, Antje; Kaiser, Jérôme; Dellwig, Olaf; Shumilovskikh, Lyudmila S; Nowaczyk, Norbert R; Arz, Helge Wolfgang (2016): Paleo-climate reconstruction on sediment core M72/5_628-1 (25-GC-1), Black Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.871241, Supplement to: Wegwerth, A et al. (2016): Northern hemisphere climate control on the environmental dynamics in the glacial Black Sea “Lake”. Quaternary Science Reviews, 135, 41-53, https://doi.org/10.1016/j.quascirev.2016.01.016

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Abstract:
The Marine Isotope Stage (MIS) 3 stands out due to its abrupt changes from cold and dry stadials to warm and humid interstadials, the so-called Dansgaard-Oeschger cycles that also affected temperature and rainfall in the Black Sea region. This study is based on a gravity core from the southeastern (SE) Black Sea that covers the last glacial lake stage from 64 to 20 ka BP. By using the composition of major and trace elements in the sediments, terrestrial plant-derived n-alkane flux, and Sr/Ca from benthic ostracods, we reconstruct the variability of riverine and aeolian input, salinity, and productivity in the SE Black Sea region in response to the Northern Hemisphere climate oscillations. During colder and drier stadials, the aeolian input increased relative to the riverine discharge, potentially due to southward shifted and/or stronger westerly winds and due to changes in the vegetation cover. An evaporation exceeding freshwater supply by rainfall and rivers possibly caused higher salinity and a lower lake level. The environmental status during MIS 4 and 2 is very much comparable with the stadial conditions during MIS 3. During warmer and more humid interstadials, lower salinity and presumably positive lake level changes most likely resulted from increased precipitation and river discharge. This likely increased primary productivity through an augmented nutrient supply. Lowest average salinities are suggested for the middle part of MIS 3 in response to enhanced meltwater from the disintegrating Fennoscandian Ice Sheet and/or by generally more humid conditions.
Related to:
Nowaczyk, Norbert R; Arz, Helge Wolfgang; Frank, Ute; Kind, J; Plessen, Birgit (2012): Dynamics of the Laschamp geomagnetic excursion from Black Sea sediments. Earth and Planetary Science Letters, 351-352, 54-69, https://doi.org/10.1016/j.epsl.2012.06.050
Shumilovskikh, Lyudmila S; Fleitmann, Dominik; Nowaczyk, Norbert R; Behling, Hermann; Marret, Fabienne; Wegwerth, Antje; Arz, Helge Wolfgang (2014): Orbital- and millennial-scale environmental changes between 64 and 20 ka BP recorded in Black Sea sediments. Climate of the Past, 10(3), 939-954, https://doi.org/10.5194/cp-10-939-2014
Wegwerth, Antje; Ganopolski, Andrey; Ménot, Guillemette; Kaiser, Jérôme; Dellwig, Olaf; Bard, Edouard; Lamy, Frank; Arz, Helge Wolfgang (2015): Black Sea temperature response to glacial millennial-scale climate variability. Geophysical Research Letters, 42, 8 pp, https://doi.org/10.1002/2015GL065499
Project(s):
Baltic Sea Research Institute, Warnemünde (IOW)
Coverage:
Latitude: 42.103500 * Longitude: 36.623830
Date/Time Start: 2007-05-29T17:12:00 * Date/Time End: 2007-05-29T17:12:00
Event(s):
M72/5_628-1 (25-GC1) * Latitude: 42.103500 * Longitude: 36.623830 * Date/Time: 2007-05-29T17:12:00 * Elevation: -418.0 m * Location: Black Sea * Campaign: M72/5 * Basis: Meteor (1986) * Method/Device: Gravity corer (GC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): Sum of n-C27 to n-C31 odd-numbered n-alkanes on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871240
  2. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): Ti/Al, Zr/Al, and Re/Al ratios on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871235
  3. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): XRF K/Ti ratios on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871236
  4. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): Ostracod abundance on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871238
  5. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): Sr/Ca ratios of ostracods on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871237
  6. Wegwerth, A; Kaiser, J; Dellwig, O et al. (2016): Total organic carbon on sediment core M72/5_628-1 (25-GC-1), Black Sea. https://doi.org/10.1594/PANGAEA.871234