Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Zarriess, Michelle; Johnstone, Heather J H; Prange, Matthias; Steph, Silke; Groeneveld, Jeroen; Mulitza, Stefan; Mackensen, Andreas (2011): Stable isotopes and Mg/Ca measurements of two sediment cores in the northeastern tropical Atlantic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.756443, Supplement to: Zarriess, M et al. (2011): Bipolar seesaw in the northeastern tropical Atlantic during Heinrich stadials. Geophysical Research Letters, 38, L04706, https://doi.org/10.1029/2010GL046070

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2011-01-25 • DOI registered: 2011-02-22

RIS CitationBibTeX Citation Copy Citation ShareShow MapGoogle Earth 228 19

Abstract:
Two SST records based on Mg/Ca of G. ruber (pink) from the continental slope off West Africa at 15°N and 12°N shed new light on the thermal bipolar seesaw pattern in the northeastern tropical Atlantic during periods of reduced Atlantic Meridional Overturning Circulation (AMOC) associated with Heinrich stadials H1 to H6. The two records indicate that the latitudinal position of the bipolar seesaw's zero-anomaly line, between cooling in the North and warming in the South, gradually shifted southward from H6 to H1. A conceptual model is presented that aims to provide a physically consistent mechanism for the southward migration of the seesaw's fulcrum. The conceptual model suggests latitudinal movements of the Intertropical Convergence Zone, driven by a combination of orbital-forced changes in the meridional temperature gradient within the realm of the Hadley cell and the expansion of the Northern Hemisphere cryosphere, as a major factor.
Related to:
Zarriess, Michelle (2010): Primary Productivity and Ocean Circulation Changes on orbital and millennial Timescales off Northwest Africa during the Last Glacial/Interglacial Cycle: Evidence from benthic foraminiferal Assemblages, stable carbon and oxygen isotopes and Mg/Ca Paleothermometry [dissertation]. Staats- und Universitätsbibliothek Bremen, Germany, 129 pp, urn:nbn:de:gbv:46-00101842-13
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Median Latitude: 13.047700 * Median Longitude: -18.034883 * South-bound Latitude: 12.435000 * West-bound Longitude: -18.056667 * North-bound Latitude: 15.498333 * East-bound Longitude: -17.948000
Date/Time Start: 2005-06-15T13:51:00 * Date/Time End: 2005-06-22T03:28:00
Event(s):
GeoB9508-5 (293) * Latitude: 15.498333 * Longitude: -17.948000 * Date/Time: 2005-06-15T13:51:00 * Elevation: -2384.0 m * Recovery: 9.56 m * Campaign: M65/1 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL) * Comment: geology, 956 cm
GeoB9526-4 (311) * Latitude: 12.435333 * Longitude: -18.056167 * Date/Time: 2005-06-21T01:00:00 * Elevation: -3223.0 m * Campaign: M65/1 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: 44-49 cm
GeoB9526-5 (311) * Latitude: 12.435000 * Longitude: -18.056667 * Date/Time: 2005-06-22T03:28:00 * Elevation: -3223.0 m * Recovery: 10.84 m * Campaign: M65/1 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL) * Comment: geology, 1084 cm, liner broken inside tube, potential sediment loss between 9-10-11 m.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Zarriess, M; Johnstone, HJH; Prange, M et al. (2011): Sea surface temperature reconstruction based on the Mg/Ca ratio of planktonic foraminifera Globigerinoides ruber pink in sediment core GeoB9508-5. https://doi.org/10.1594/PANGAEA.756435
  2. Zarriess, M; Johnstone, HJH; Prange, M et al. (2011): Sea surface temperature reconstruction based on the Mg/Ca ratio of planktonic foraminifera Globigerinoides ruber pink in sediment profile GeoB9526. https://doi.org/10.1594/PANGAEA.756440
  3. Zarriess, M; Johnstone, HJH; Prange, M et al. (2011): Age determination of sediment core GeoB9526-5. https://doi.org/10.1594/PANGAEA.756415
  4. Zarriess, M; Johnstone, HJH; Prange, M et al. (2011): Stable oxygen ratios of epibenthic foraminifer Cibicidoides wuellerstorfi from sediment core GeoB9526-5, 355 - 980 cm. https://doi.org/10.1594/PANGAEA.756436
  5. Zarriess, M; Johnstone, HJH; Prange, M et al. (2011): X-ray fluorescence measurements on sediment core GeoB9526-5, 351 - 980 cm. https://doi.org/10.1594/PANGAEA.756437