What question did this study set out to answer?

To document the geological variability in the strength and depth of Mediterranean Outflow Water across glacial-interglacial cycles over the past 416,000 years.

August 25, 2020Paleoceanography and PaleoclimatologyOpen Access

Climate‐Induced Variability in Mediterranean Outflow to the North Atlantic Ocean During the Late Pleistocene

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To document the geological variability in the strength and depth of Mediterranean Outflow Water across glacial-interglacial cycles over the past 416,000 years.
Analyzed rapidly accumulated marine sediment cores recovered from the West Iberian Margin during Integrated Ocean Drilling Program (IODP) Expedition 339 spanning 416 ka to present.
Measured X-ray fluorescence, physical grain size, and paleocurrent flow orientation using anisotropy of magnetic susceptibility.
Principal magnetic susceptibility axes closely mirrored glacial-interglacial climate cycles throughout the 416 kyr record.
Mediterranean Outflow Water remained shallow and paced by precession between marine isotope stages 10 and 4, transitioning to deeper flow dominated by millennial-scale variability during stage 11 and from stage 3 to present.

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Implication

Paleoceanographic analysis reveals orbital and millennial shifts in Mediterranean Outflow Water depth and strength, indicating strong control by regional rainfall.

Cite This Study

Nichols et al. (2020) studied this question.

synapsesocial.com/papers/6a9238bb7fe4291aaf3844eb https://doi.org/10.1029/2020pa003947

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Implication

Paleoceanographic analysis reveals orbital and millennial shifts in Mediterranean Outflow Water depth and strength, indicating strong control by regional rainfall.

Climate‐Induced Variability in Mediterranean Outflow to the North Atlantic Ocean During the Late Pleistocene

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Discussion

Implication

Cite This Study

Climate‐Induced Variability in Mediterranean Outflow to the North Atlantic Ocean During the Late Pleistocene

Key Points

Discussion

Implication

Cite This Study

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