A new approach to solving the problems of operational analysis of the vertical stratification state of ocean environment waters

by

L.A. Krasnodubets1,2

 1Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33

2Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28

E-mail: lakrasno@gmail.com

 

DOI: 10.33075/2220-5861-2023-4-25-33

UDC 621.384 – 027.31                                               

EDN: https://elibrary.ru/

Abstract:

A solution to the problems of operational analysis of the vertical stratification state of the ocean environment using both a new hydrostatic method for direct measuring the density of natural waters patented by V.A. Gaisky and an updated original method for dynamic measurements of the vertical profile of the density of seawater with a sea profiling probe is presented.

The integrated use of two different methods for profile measurements of the density of seawater made it possible to avoid the manifestation of significant shortcomings typical for each of the methods – the hydrostatic method is used to measure the initial value of the density of seawater at the surface, on the basis of which the updated method of dynamic measurements ensures the construction of the entire vertical profile for it during the profiling process. At the same time, the updated method, in contrast to the basic one, made it possible to significantly simplify the composition of the on-board equipment of the sea profiling probe, since to construct a vertical profile of the density of seawater and its increment, hydrostatic pressure measurement data coming from a single pressure sensor installed on the hull of the sea profiling probe are used.

The application of the seawater density profile constructed using the proposed algorithm and software for operational analysis of the vertical stratification state of ocean environment waters is shown.

The results of computer simulation performed using MATLAB & Simulink are presented in the form of graphs of the distributions of the main characteristics of the vertical stratification of ocean waters relative to hydrostatic pressure – the density of seawater, the vertical stability of layers of water masses and the Väisälä-Brunt frequency of thermohaline oscillations of deep waves.

Keywords: stratification, vertical stability, Väisälä-Brunt frequency, sea probe, seawater density, computer modeling, hydrostatic pressure.

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REFERENCES

  1. Fedorov K.N. Tonkaya termokhalinnaya struktura vod okeana (Fine thermohaline structure of ocean waters). Leningrad: Gidrometeoizdat, 1976, 184 p.
  2. Arkhipkin V.S. and Dobrolyubov S.A. Okeanologiya. Fizicheskie svojstva morskoj vody (Physical properties of seawater). Moscow: Izd-vo Yurayt, 2020, 216 p.
  3. Krasnodubets L.A. Metod opredeleniya vertikal’nogo profilya plotnosti morskoj vody na osnove izmerenij parametrov dvizheniya neupravlyayemogo avtonomnogo zonda (Method for determining the vertical profile of seawater density based on measurements of the motion parameters of an uncontrolled autonomous probe). Sistemy kontrolya okruzhayushchey sredy, 2017, No. 4 (30), pp. 8–15.
  4. Krasnodubets L.A. Dinamicheskiye izmereniya v zadachah operativnoj okeanologii pri issledovanii svojstv okeanskoj tolshchi (Dynamic measurements in problems of operational oceanology when studying the properties of the ocean strata). Sistemy kontrolya okruzhayushchey sredy, 2022, Vol. 1 (47), pp. 56–65.
  5. Mamayev O.I. Morskaya turbulentnost’ (Marine turbulence). Moscow: Izd-vo MGU, 1970, 204 p.
  6. Gayskiy V.A. Patent na izobretenie RF № 2792263. Izmeritel’ plotnosti zhidkosti i ego varianty: zayavitel’ i patentoobladatel’: FGBNU “Institut prirodno-tekhnicheskih sistem”. Opubl. 21.03.2023. Byul. № 9 (Patent for invention of the Russian Federation No. 2792263. Liquid density meter and its variants: applicant and patent holder: Federal State Budgetary Institution “Institute of Natural-Technical Systems”. Publ. 03/21/2023. Bull. No. 9).
  7. Millard R.C., Owens W.B., and Fofonoff N.P. On the calculation of the Brunt-Vaisala frequency. Deep Sea Research, 1990, Vol. 37, No. 1, pp. 167−181.

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