Abstract

The paper presents new data on concentrations and fluxes of organic carbon, iron, and manganese in waters of the mouth area of the Northern Dvina River. The work was conducted within the project “Northern Dvina River Marginal Filter Observatory” from May 2015 to May 2019 with monthly collection of water samples. Systematic determinations of the concentrations of the main carrier elements of many trace elements in dissolved and particulate forms were used to establish the average weighted of C_org, Fe, and Mn concentrations. The results of 4 years of systematic investigations established the main regularities of seasonal variations of dissolved and particulate forms of element concentrations and the relationships between. Significant variations were observed not only between concentrations but also between fluxes of elements in both forms. However, more than half the annual fluxes of all elements in all years studied was transported to the sea in the spring flood period. The results also demonstrated significant variations between element concentrations and their fluxes in different years. This is unsurprising, since even during the 4 years of investigations, the difference between water runoff and SPM fluxes in different years was up to, respectively, 1.4 and 2.6 times.

中文翻译：

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从北部德维纳河到白海的溶解性和颗粒状有机碳，铁和锰的浓度和通量的季节性和年度间变化

摘要

本文介绍了北德维纳河口水域中有机碳，铁和锰的浓度和通量的新数据。该工作是在2015年5月至2019年5月的“北德维纳河边际过滤器观测站”项目中进行的，每月收集水样。系统分析了许多以溶解和颗粒形式存在的微量元素的主要载体元素的浓度，以建立C _org的平均权重。，铁和锰的浓度。4年系统研究的结果确定了元素浓度​​的溶解态和颗粒态及其相互关系的季节性规律。不仅在浓度之间而且在两种形式的元素通量之间都观察到显着变化。然而，在春季洪水期间，在所有研究的年份中，所有元素的年通量有一半以上被输送到海中。结果还表明，不同年份的元素浓度及其通量之间存在显着差异。这并不奇怪，因为即使在4年的调查中，不同年份的水径流和SPM通量之间的差异也分别高达1.4倍和2.6倍。