Transformation of salt composition of sea water in process of differential-diffusive convection (natural and laboratory researches)

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295) Pub Date : 2001-11-05 DOI:10.1109/OCEANS.2001.968158

V. Kobylyansky, M. Domanov, L. S. Vilentchik, I. G. Akhmetsafin

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Abstract

Hydrophysical and hydrochemical investigations of the World Ocean allowed to detect both horizontal and vertical heterogeneities of the main salt composition of sea water (Fabricand et al, 1966; Soifer, Bichkov, Ilyichev, 1982; Kobilyansky et al, 1985; Domanov, 1992; Domanov and Vodaynaya, 1987). The interrelation between the processes of differential-diffusive convection in the thin thermolialine structure and observed variability of the main salt composition was shown in Kobilyansky et al. (1985) and Domanov (1992) for the case of generation of heterogeneities of the main salt composition of sea water in interlayers of thin thermohaline structure. For a detailed study of this phenomenon the natural and laboratory investigations of variability of the main salt composition during the processes of differential-diffusive convection were carried out. Heterogeneities of salt composition in a pack of thin thermohaline structure interlayers were studied in the Atlantic Ocean at a station with following coordinates 4/spl deg/17'N. 44/spl deg/03'W. The greatest deviation in ratio Mg/Na was 9.4% and in ratio Ca/Na-9.1%. Laboratory studies in conditions of differential-diffusion convection confirm the change of element ratios. Variations of salt composition obtained experimentally are similar to that observed in natural conditions.

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差分扩散对流过程中海水盐成分的变化(自然和实验室研究)

世界海洋的水物理和水化学调查可以探测海水主要盐成分的水平和垂直非均质性(Fabricand等人，1966年;Soifer, Bichkov, Ilyichev, 1982;Kobilyansky等人，1985;Domanov, 1992;Domanov和Vodaynaya, 1987)。Kobilyansky et al.(1985)和Domanov(1992)在薄热盐构造层间海水主盐组成非均质性产生的情况下，展示了薄热盐构造中微分扩散对流过程与观测到的主盐组成变率之间的相互关系。为了详细研究这一现象，对微分扩散对流过程中主要盐成分的变化进行了自然和实验室研究。在座标为4/spl°/17′n的台站研究了大西洋一组薄温盐结构夹层中盐成分的非均质性。44 / spl度/ 03 'w。Mg/Na比值最大偏差为9.4%，Ca/Na-比值最大偏差为9.1%。在微分扩散对流条件下的实验室研究证实了元素比的变化。实验得到的盐组成的变化与在自然条件下观察到的变化相似。

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MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)

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