Publication:
Asymptotic optical attenuation in sea water

Дата
2023
Авторы
Marinyuk, V. V.
Sheberstov, S. V.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
A simple method is proposed for calculating the asymptotic attenuation coefficient K∞ of sea water. The method is based on the scaling analysis of the radiative transfer equation within the small-angle approximation. From the scaling, it follows that K∞ is analytically expressed in terms of the absorption coefficient, the transport scattering coefficient, and two dimensionless numeric constants (scaling exponents) depending on a specific scattering phase function. For a given phase function, the scaling exponents can be determined by numerical calculations of the downwelling irradiance. We test the method on a number of oceanlike scattering models. A direct numerical integration of the radiative transfer equation is carried out with the DISORT code for the Petzold, Morel et al., Fournier–Forand and Kopelevich phase functions. Our numerical results agree perfectly with the small-angle scaling and allow us to establish an explicit expression for K∞ for each phase function. We find that the scaling exponents depend rather weakly on the specific angular profile of the phase function and can be taken equal to their values for the Henyey–Greenstein function (this approximation leads to a relative error in the value K∞ less than 5%). So that, within a few percent accuracy, the coefficient K∞ is governed only by the absorption and transport scattering coefficients and is described by a universal formula. © 2022 Elsevier Ltd
Описание
Ключевые слова
Asymptotic radiance distribution , Diffuse attenuation coefficient , Light scattering , Optical attenuation in sea water , Radiative transfer equation , Scaling
Цитирование
Marinyuk, V. V. Asymptotic optical attenuation in sea water / Marinyuk, V.V., Sheberstov, S.V. // Journal of Quantitative Spectroscopy and Radiative Transfer. - 2023. - 295. - 10.1016/j.jqsrt.2022.108419
URI
https://www.doi.org/10.1016/j.jqsrt.2022.108419
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85142121939&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000892231600013
 https://openrepository.mephi.ru/handle/123456789/29866
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