Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements
Purpose. The work is aimed at assessing the effect of variations in the major ion-salt composition on the accuracy of determining water salinity in the inland seas and other seawater areas. The main goal of the study is to assess the representativeness of the results of the CTD salinity measurements...
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Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS»
2022
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ftdoajarticles:oai:doaj.org/article:23ea26f7e83f446fb720bfe40b11d961 2023-09-05T13:20:47+02:00 Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements N.Yu. Andrulionis P.O. Zavialov A.S. Izhitskiy 2022-10-01T00:00:00Z https://doaj.org/article/23ea26f7e83f446fb720bfe40b11d961 EN eng Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» http://physical-oceanography.ru/repository/2022/5/en_202205_03.pdf https://doaj.org/toc/1573-160X 1573-160X https://doaj.org/article/23ea26f7e83f446fb720bfe40b11d961 Physical Oceanography, Vol 29, Iss 5, Pp 463-479 (2022) determination of salinity salinity ionic composition chemical composition component composition density of seawater seawater potentiometric titration black sea kerch strait caspian sea kara sea Oceanography GC1-1581 article 2022 ftdoajarticles 2023-08-13T00:38:01Z Purpose. The work is aimed at assessing the effect of variations in the major ion-salt composition on the accuracy of determining water salinity in the inland seas and other seawater areas. The main goal of the study is to assess the representativeness of the results of the CTD salinity measurements (standard in oceanological practice) for the areas where the ion-salt seawater composition differs from that of the ocean. Methods and Results. Salinity values of the seawater samples collected in the expeditions in the Black Sea and the Kerch Strait, and also in the Kara and Caspian seas in 2014–2021, were obtained in four different ways: 1) measurements with a CTD-probe based on electrical conductivity (practical salinity); 2) based on the measured density values, calculation by the TEOS-10 equation of state with due regard for the regional correction for the areas under study (absolute salinity); 3) calculation by chlorine content using empirical dependencies for the corresponding water basins; 4) direct calculation based on a sum of components of the major ionic composition (similar to chemical determination in a laboratory). Conclusions. Differences in the ratios of the main ions in the water chemical compositions of the water areas and basins under study significantly affect the accuracy of salinity determination by standard oceanographic equipment. The variations in the major ionic composition, especially in the surface layer of the sea coastal part, are assumed to be largely influenced by the continental freshwater runoff. The ionic composition variability, having been not taken into account, leads to the errors in the measurements of physical parameters at traditional CTD-probing. Article in Journal/Newspaper Kara Sea Directory of Open Access Journals: DOAJ Articles Kara Sea |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
determination of salinity salinity ionic composition chemical composition component composition density of seawater seawater potentiometric titration black sea kerch strait caspian sea kara sea Oceanography GC1-1581 |
spellingShingle |
determination of salinity salinity ionic composition chemical composition component composition density of seawater seawater potentiometric titration black sea kerch strait caspian sea kara sea Oceanography GC1-1581 N.Yu. Andrulionis P.O. Zavialov A.S. Izhitskiy Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
topic_facet |
determination of salinity salinity ionic composition chemical composition component composition density of seawater seawater potentiometric titration black sea kerch strait caspian sea kara sea Oceanography GC1-1581 |
description |
Purpose. The work is aimed at assessing the effect of variations in the major ion-salt composition on the accuracy of determining water salinity in the inland seas and other seawater areas. The main goal of the study is to assess the representativeness of the results of the CTD salinity measurements (standard in oceanological practice) for the areas where the ion-salt seawater composition differs from that of the ocean. Methods and Results. Salinity values of the seawater samples collected in the expeditions in the Black Sea and the Kerch Strait, and also in the Kara and Caspian seas in 2014–2021, were obtained in four different ways: 1) measurements with a CTD-probe based on electrical conductivity (practical salinity); 2) based on the measured density values, calculation by the TEOS-10 equation of state with due regard for the regional correction for the areas under study (absolute salinity); 3) calculation by chlorine content using empirical dependencies for the corresponding water basins; 4) direct calculation based on a sum of components of the major ionic composition (similar to chemical determination in a laboratory). Conclusions. Differences in the ratios of the main ions in the water chemical compositions of the water areas and basins under study significantly affect the accuracy of salinity determination by standard oceanographic equipment. The variations in the major ionic composition, especially in the surface layer of the sea coastal part, are assumed to be largely influenced by the continental freshwater runoff. The ionic composition variability, having been not taken into account, leads to the errors in the measurements of physical parameters at traditional CTD-probing. |
format |
Article in Journal/Newspaper |
author |
N.Yu. Andrulionis P.O. Zavialov A.S. Izhitskiy |
author_facet |
N.Yu. Andrulionis P.O. Zavialov A.S. Izhitskiy |
author_sort |
N.Yu. Andrulionis |
title |
Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
title_short |
Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
title_full |
Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
title_fullStr |
Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
title_full_unstemmed |
Effect of Variations in the Ion-Salt Water Composition on the Accuracy of Salinity Measurements |
title_sort |
effect of variations in the ion-salt water composition on the accuracy of salinity measurements |
publisher |
Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» |
publishDate |
2022 |
url |
https://doaj.org/article/23ea26f7e83f446fb720bfe40b11d961 |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Kara Sea |
genre_facet |
Kara Sea |
op_source |
Physical Oceanography, Vol 29, Iss 5, Pp 463-479 (2022) |
op_relation |
http://physical-oceanography.ru/repository/2022/5/en_202205_03.pdf https://doaj.org/toc/1573-160X 1573-160X https://doaj.org/article/23ea26f7e83f446fb720bfe40b11d961 |
_version_ |
1776201421746601984 |