Romahn, Sarah; Mackensen, Andreas; Pätzold, Jürgen; Kuhlmann, Holger (2014): Stable oxygen and carbon isotopes and sediment geochemistry of sediment core GeoB12616-4 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.840864, Supplement to: Romahn, S et al. (in prep.): Indian Ocean Deep Water Variability of the past 600 kyr.
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Abstract:
The Indian Ocean is an important component of the global thermohaline circulation system, as its western boundary currents feed the Agulhas Current, an integral part of the Atlantic meridional overturning circulation. However, Indian Ocean intermediate to deep-water variability on glacial-interglacial timescales is still a matter of debate. Here we provide stable carbon and oxygen isotopes and sediment elemental compositions of a sediment core from the edge of the Somali Basin. We demonstrate that throughout the past 600 kyr the intermediate western Indian Ocean was primarily bathed by Southern Ocean sourced Upper Circumpolar Deep Water (UCDW). This Southern Ocean sourced water mass enters the Somali Basin via the Amirante Passage or the Mozambique Channel and represents a downstream equivalent of South Atlantic UCDW. We cannot clearly account for the shortterm passage of Red Sea Water (RSW) at 1500 m water depth along the African continental margin, as previously suggested, on glacial-interglacial timescales.
Project(s):
Coverage:
Latitude: -6.979500 * Longitude: 40.393500
Date/Time Start: 2008-02-16T19:01:00 * Date/Time End: 2008-02-16T19:01:00
Event(s):
GeoB12616-4 (M75/2_104-4) * Latitude: -6.979500 * Longitude: 40.393500 * Date/Time: 2008-02-16T19:01:00 * Elevation: -1449.0 m * Recovery: 6 m * Location: Rufiji River - Latham Island * Campaign: M75/2 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Romahn, S; Mackensen, A; Pätzold, J et al. (2014): Geochemistry of sediment core GeoB12616-4. https://doi.org/10.1594/PANGAEA.840863
- Romahn, S; Mackensen, A; Pätzold, J et al. (2014): Stable carbon and oxygen isotopes of Cibicidoides wuellerstorfi and Globigerinoides ruber of sediment core GeoB12616-4. https://doi.org/10.1594/PANGAEA.840862