A Promising Optical-Acoustic Method for Measuring the Marine Environment Thermodynamic State Parameters. Errors' Assessment

V.I. Babiy1, M.V. Babiy1, ✉, A.A. Rodionov2

1 Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russian Federation

2 Saint-Petersburg Branch of the P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Saint-Petersburg, Russia

✉ e-mail: marbab@yandex.ru

Abstract

A concept of constructing a perfect hydrophysical meter of thermodynamic state parameters of the randomly inhomogeneous fluid is the basis of the proposed method. The concept represents continuous simultaneous measurements of the light refractive index, the sound velocity and the pressure in a single volume of marine environment. The errors of direct and indirect measurements of the marine environment thermodynamic state parameters are estimated. A possible variant of optical-acoustic meter implementation is proposed. The problem of decentralization of the standard base of such meters by creating a single special primary standard of sound velocity and light velocity units in transparent fluids with the reference to the perfect easily-reproduced absolute rapper (light velocity in a vacuum) accepted as the world fundamental physical constant is considered.

Keywords

seawater, state parameters, light velocity, sound velocity, pressure, quasi-perfect meter, measurement errors, single standard, decentralization

For citation

Babiy, V.I., Babiy, M.V. and Rodionov, A.A., 2016. A Promising Optical-Acoustic Method for Measuring the Marine Environment Thermodynamic State Parameters. Errors' Assessment. Physical Oceanography, (2), pp. 62-72. doi:10.22449/1573-160X-2016-2-62-72

DOI

10.22449/1573-160X-2016-2-62-72

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