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			<front>
			<journal-meta>
				<journal-id journal-id-type="ojs">vestnik</journal-id>
				<journal-title-group>
					<journal-title xml:lang="ru">Экологический вестник научных центров Черноморского экономического сотрудничества</journal-title>
					<trans-title-group xml:lang="en">
						<trans-title>Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation</trans-title>
					</trans-title-group>
				</journal-title-group>
			<issn pub-type="ppub">1729-5459</issn>
			<publisher>
				<publisher-name>Кубанский государственный университет</publisher-name>
				<publisher-loc>RU</publisher-loc>
			</publisher>
			<self-uri xlink:href="https://vestnik.kubsu.ru/" />
		</journal-meta>
		<article-meta>
			<article-id pub-id-type="publisher-id">1023</article-id>
			<article-id pub-id-type="doi">10.31429/vestnik-20-2-70-81</article-id>
			<article-categories>
				<subj-group xml:lang="ru" subj-group-type="heading"><subject>Научная статья</subject></subj-group>
				<subj-group xml:lang="en" subj-group-type="heading"><subject>Original article</subject></subj-group>
				<subj-group xml:lang="ru"><subject>Физика</subject></subj-group>
				<subj-group xml:lang="en"><subject>Physics</subject></subj-group>
			</article-categories>
			<title-group>
				<article-title xml:lang="ru">Затухание звука в морской среде (обзор)</article-title>
				<trans-title-group xml:lang="en">
					<trans-title>Sound attenuation in the marine environment (review)</trans-title>
					</trans-title-group>
			</title-group>
			<contrib-group content-type="author">
				<contrib >
					<contrib-id contrib-id-type="orcid" authenticated="false">https://orcid.org/0000-0002-6471-0162</contrib-id>
					<name-alternatives>
						<string-name specific-use="display">Ярошенко А.А.</string-name>
						<name name-style="western" specific-use="primary" xml:lang="ru">
							<surname>Ярошенко</surname>
							<given-names>Александр Александрович</given-names>
						</name>
						<name name-style="western" xml:lang="en">
							<surname>Yarochenko</surname>
							<given-names>Alexander A.</given-names>
						</name>
					</name-alternatives>
					<xref ref-type="aff" rid="aff-1" />
					<email>yaroshenko.575@yandex.ru</email>
					<bio xml:lang="ru"><p>д-р физ.-мат. наук, профессор, профессор кафедры "Высшая математика" Севастопольского государственного университета</p></bio>
				</contrib>
				<contrib >
					<contrib-id contrib-id-type="orcid" authenticated="false">https://orcid.org/0000-0001-8994-7185</contrib-id>
					<name-alternatives>
						<string-name specific-use="display">Дегтяр  А.Д.</string-name>
						<name name-style="western" specific-use="primary" xml:lang="ru">
							<surname>Дегтяр </surname>
							<given-names>Алексей Дмитриевич</given-names>
						</name>
						<name name-style="western" xml:lang="en">
							<surname>Degtyar </surname>
							<given-names>Alexey D.</given-names>
						</name>
					</name-alternatives>
					<xref ref-type="aff" rid="aff-2" />
					<email>lyohadegtyar4@mail.ru</email>
					<bio xml:lang="en"><p>postgraduate student of the Department of Higher Mathematics</p></bio>
					<bio xml:lang="ru"><p>аспирант кафедры "Высшая математика" Севастопольского государственного университета</p></bio>
				</contrib>
			</contrib-group>
			<aff id="aff-1"><institution content-type="orgname" xml:lang="ru">Севастопольский государственный университет, Севастополь</institution><institution content-type="orgname" xml:lang="en">Sevastopol State University, Sevastopol</institution></aff>
			<aff id="aff-2"><institution content-type="orgname" xml:lang="ru">Севастопольский государственный университет, Севастополь</institution><institution content-type="orgname" xml:lang="en">Sevastopol State University, Sevastopol</institution></aff>
			<pub-date date-type="pub" iso-8601-date="2023-06-30" publication-format="ppub">
				<day>30</day>
				<month>06</month>
				<year>2023</year>
			</pub-date>
			<volume>20</volume>
			<issue>2</issue>
				<fpage>70</fpage>
				<lpage>81</lpage>
			<history>
				<date date-type="received" iso-8601-date="2023-06-13">
					<day>13</day>
					<month>06</month>
					<year>2023</year>
				</date>
				<date date-type="accepted" iso-8601-date="2023-06-17">
					<day>17</day>
					<month>06</month>
					<year>2023</year>
				</date>
				<date date-type="pub" iso-8601-date="2023-06-30">
					<day>30</day>
					<month>06</month>
					<year>2023</year>
				</date>
			</history>
			<permissions>
				<copyright-statement>Copyright (c) 2023 Ярошенко А.А., Дегтяр  А.Д.</copyright-statement>
				<copyright-year>2023</copyright-year>
				<copyright-holder>Ярошенко А.А., Дегтяр  А.Д.</copyright-holder>
				<license xlink:href="https://creativecommons.org/licenses/by/4.0">
					<license-p>Это произведение доступно по лицензии Creative Commons «Attribution» («Атрибуция») 4.0 Всемирная.</license-p>
				</license>
			</permissions>
			<self-uri xlink:href="https://vestnik.kubsu.ru/article/view/1023" />
			<abstract xml:lang="en">
				<p>One of the factors affecting the range of sound propagation in the marine environment is sound absorption. Many researchers have contributed to the current knowledge of sound attenuation in seawater. The article presents a brief historical overview of the studies about the sound absorption in seawater. A number of empirical formulas for calculating the sound absorption coefficient in the marine environment are given. The current state of the problem is analyzed. Sound absorption depends on temperature, pressure, salinity, acidity (hydrogen <italic>pH</italic>) and frequency. For high frequencies, the sound absorption is much higher than for low frequencies. With an increase in hydrostatic pressure, absorption decreases. An increase in temperature, salinity and hydrogen index increases absorption. Sound absorption in seawater is caused by the presence of magnesium, boron and bromine salts dissolved in it. A large number of processes occur in seawater, but only two relaxations account for most of the absorption. This is the relaxation of magnesium sulfate MgSO4 (relaxation frequency <italic>fr </italic>~100 kHz) and boric acid B(OH)3 (<italic>fr </italic>~1 kHz). A third relaxation involving magnesium carbonate MgCO3 (<italic>fr </italic>~10 kHz) was revealed. At frequencies from 0.2 to 10 kHz, boric acid B(OH)3 makes the main contribution to absorption. At frequencies below 1 kHz, the absorption coefficient in the ocean depends on the <italic>pH</italic>. Dependence on <italic>pH</italic> is associated with relaxation of the following types: B(OH)3 – boric acid and MgCO3 – magnesium carbonate. In the frequency range from 10 to 1000 kHz, magnesium sulfate MgSO4 makes the main contribution to attenuation. At high frequencies (&gt; 1000 kHz), the absorption depends on the viscosity. At frequencies below 200 Hz, there is a spread of experimental data. This variation is associated with regional dependence.</p>
			</abstract>
			<abstract xml:lang="ru">
				<p>Одним из факторов, влияющих на дальность распространения звука в морской среде, является поглощение звука. Многие исследователи внесли свой вклад в современное знание о затухании звука в морской воде. В статье представлен краткий исторический обзор работ, посвященных исследованию поглощению звука в морской воде. Приведен ряд эмпирических формул для расчета коэффициента поглощения звука в морской среде. Рассматривается современное состояние проблемы. Поглощение звука зависит от температуры, давления, солености, кислотности (водородного показателя <italic>рН</italic>) и частоты. Для высоких частот поглощение звука намного выше, чем для низких. При увеличении гидростатического давления снижается поглощение. Повышение температуры, солености и водородного показателя увеличивает поглощение. Поглощение звука в морской воде обусловлено наличием растворенных в ней солей магния, бора и брома. В морской воде происходит большое количество процессов, но только на две релаксации приходится большая часть поглощения. Это релаксация сульфата магния MgSO4 (частота релаксации <italic>fr</italic>~100 кГц) и борной кислоты В(ОН)3 (<italic>fr</italic>~1 кГц). Выявлена еще третья релаксация с участием карбоната магния MgCO3 (<italic>fr</italic>~10 кГц). На частотах от 0,2 до 10 кГц основной вклад в поглощение вносит борная кислота В(ОН)3. На частотах ниже 1 кГц коэффициент поглощения в океане зависит от <italic>рН</italic>. Зависимость от <italic>рН</italic> связывают с релаксацией видов: В(ОН)3 – борной кислоты и MgСO3 – карбоната магния. В диапазоне частот от 10 до 1000 кГц основной вклад в затухание вносит сульфат магния MgSO4. На высоких частотах (&gt; 1000 кГц) поглощение зависит от вязкости. На частотах ниже 200 Гц наблюдается разброс экспериментальных данных. Этот разброс связывают с региональной зависимостью.</p>
			</abstract>
			<kwd-group xml:lang="ru">
				<kwd>морская среда</kwd>
				<kwd>затухание звука</kwd>
				<kwd>коэффициент поглощения</kwd>
				<kwd>частота</kwd>
				<kwd>температура</kwd>
				<kwd>соленость</kwd>
				<kwd>водородный показатель</kwd>
				<kwd>гидростатическое давление</kwd>
				<kwd>вязкость</kwd>
				<kwd>частота релаксации</kwd>
			</kwd-group>
			<kwd-group xml:lang="en">
				<kwd>marine environment</kwd>
				<kwd>sound attenuation</kwd>
				<kwd>absorption coefficient</kwd>
				<kwd>frequency</kwd>
				<kwd>temperature</kwd>
				<kwd>salinity</kwd>
				<kwd>hydrogen index</kwd>
				<kwd>hydrostatic pressure</kwd>
				<kwd>viscosity</kwd>
				<kwd>relaxation frequency</kwd>
			</kwd-group>
			<counts><page-count count="12" /></counts>
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	<body></body>
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