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Flux-forced simulations of the paleocirculation of the Mediterranean

机译：通量强迫的地中海古环流模拟

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摘要

A series of experiments with an ocean general circulation model of the Mediterranean forced by artificial (but realistic) surface fluxes of heat and freshwater are performed. The modelk has a stable thermohaline circulation under the baseline fluxes. Small decreases in excess evaporation (8%) produce a linear weakening of the thermohaline circulation with less water formation and smaller strait transports. Levantine Intermediate water production is shown to be very sensitive to additional freshwater input. The dominant circulation mode in "wetter" climates is one with Adriatic Intermediate Water formation and dispersal, leading to ventilation of intermediate depths of the basin. Although the deep layers are not ventilated, stratification is generally weak. As the excess evaporation decreases, stratification increases. A 60-80% decrease leads to conditions closest to those suggested for sapropel S_1, with a west-east salinity gradient of half of today.
机译：进行了一系列地中海的海洋总环流模型的实验，这些模型是由人工（但现实的）表面热通量和淡水强迫的。该模型在基线通量下具有稳定的盐卤循环。过量蒸发的少量减少（8％）会导致热盐循环的线性减弱，形成的水量减少，海峡运输量减少。黎万丁中间水生产对额外的淡水输入非常敏感。在“较凉爽”的气候中，主要的循环模式是亚得里亚海中间水的形成和扩散，导致盆地中间深度的通风。尽管深层不通风，但分层通常较弱。随着过量蒸发的减少，分层增加。降低60-80％会导致条件最接近为腐殖质S_1建议的条件，东西方盐度梯度为今天的一半。

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