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Particular Features of the Chemical Composition of the Interstitial Waters of the White Sea

机译：白海间隙水化学成分的特殊特征

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The report presents the results of the studies of the macrocomposition,nutrient contents,and pH and Eh values of 84 samples of interstitial and near-bottom waters of the White Sea obtained at 32 stations.In the bottom sediments,the pH and Eh values varied from 6.8 to 7.8 and from -324 to +523 mV,respectively.In the glacial clays and moraines,values of Eh < -300 mV and an increased total mineralization(SIGMAM)of the interstitial waters were found.As compared to the near-bottom water,the IM values in the southern and central parts of the White Sea were slightly decreased,while,in the northern part of the sea,they were somewhat greater.The ranges of the IM variations in the interstitial and near-bottom waters were 27.4-34.5 and 25.6-35.4 g/1(up to 33.9 and 34.5 g/kg),respectively.The decreased IM values in the interstitial waters were found in the late glacial and early Holocene deposits.The Holocene transgression was accompanied by growth in the IM,Cl~-,Na~+,and Mg~~(2+)of the interstitial waters upwards along the cores.Sulfate reduction and nutrient accumulation (up to 20,3.5,2 mg/1,and 30 mug/l of N-NH_4~+,P,Si,and N-NO_2,respectively)were observed at the Solovetskie Islands and in Kandalaksha Bay.Good correlation of all the macroions excluding Alk with Cl~-was noted,which represents the effect of the first(sedimentogenic)factor.The biogenic factor and the factor of the vertical variability of N-NH_4~+,Alk,and SO_4~(2-)were also notable.It is supposed that the increase in the MgCl_2 relative content in the Holocene interstitial waters was caused by the development of a cryogenic process and by the jet-wise gravitational sinking of frozen-out brines.
机译：该报告介绍了在32个台站获得的84份白海间隙水和近底水样品的宏观组成，营养成分以及pH和Eh值的研究结果。分别在6.8至7.8和-324至+523 mV之间。在冰质黏土和冰rain中，发现Eh <-300 mV值，并且间隙水的总矿化度（SIGMAM）增加。在海底，白海南部和中部的IM值略有下降，而在海北部，则稍大。间质水和近底水的IM变化范围为分别在27.4-34.5和25.6-35.4 g / 1（分别高达33.9和34.5 g / kg）之间。在晚冰川期和全新世早期沉积中，间质水域的IM值降低。间隙的IM，Cl〜-，Na〜+和Mg ~~（2+）沿核心向上水。在注意到除Alk以外的所有大分子与Cl〜-都具有良好的相关性，这代表了第一个（沉积成因）因子的作用。生物成因和N-NH_4〜的垂直变化因子+，Alk，和SO_4〜（2-）也很明显。据推测，全新世间隙水中MgCl_2相对含量的增加是由于低温过程的发展和冷冻物质的喷射重力沉降引起的。盐水。

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