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首页> 外文期刊>Paleoceanography >Glacial to interglacial changes in the settling depth of the Mediterranean Outflow plume
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Glacial to interglacial changes in the settling depth of the Mediterranean Outflow plume

机译：从冰川到冰川间变化，地中海流出羽流的沉降深度

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[1] We present micropalaeontological and grain-size records for a set of sediment cores from the Gulf of Cadiz ( southwest Spain) that reflect changes in the position and strength of the Mediterranean Outflow ( MO) current. The cores sample a sediment drift ( the Gil Eanes Drift) that is positioned lower on the slope in the Gulf of Cadiz than the position of the main current today. The data indicate that the drift is of glacial age and that the glacial MO current was positioned lower on the slope than today but also that it was active over a considerably reduced area of the slope. We argue that this observation is consistent with physical constraints on the Gibraltar Exchange and on the likely settling and spreading behavior of the MO plume along the Iberian Margin under glacial environmental and sea level conditions. The deeper settling of the MO is likely to have influenced the formation of glacial North Atlantic Intermediate Water and also may have exerted indirect influence on the formation of glacial North Atlantic Deep Water.
机译：[1]我们提供了来自加的斯湾（西班牙西南部）的一组沉积物岩心的微古生物学和粒度记录，反映了地中海流出（MO）流的位置和强度的变化。岩心取样的沉积物漂移（吉尔·伊恩斯漂移）位于加的斯湾的斜坡上，比今天的主要洋流位置低。数据表明，该漂移属于冰川时代，冰川MO电流在斜坡上的位置比今天要低，但在斜坡明显减小的区域上仍活跃。我们认为，这一观察结果与直布罗陀交易所的物理约束以及冰川环境和海平面条件下沿伊比利亚边界的MO羽的可能沉降和扩散行为是一致的。 MO的更深沉降很可能影响了北大西洋中间水冰的形成，也可能间接影响了北大西洋深水冰的形成。

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