<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">12781</article-id><article-id pub-id-type="doi">10.31857/S0869-56524845605-609</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Geochemistry</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Геохимия</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The physical nature of heterogeneity of the composition of river water</article-title><trans-title-group xml:lang="ru"><trans-title>Физическая природа неоднородности состава речных вод</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chashechkin</surname><given-names>Yu. D.</given-names></name><name xml:lang="ru"><surname>Чашечкин</surname><given-names>Ю. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>chakin@ipmnet.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rosenthal</surname><given-names>O. M.</given-names></name><name xml:lang="ru"><surname>Розенталь</surname><given-names>О. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>chakin@ipmnet.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт проблем механики им. А.Ю. Ишлинского Российской Академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Water Problems Institute of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт водных проблем Российской Академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-05-16" publication-format="electronic"><day>16</day><month>05</month><year>2019</year></pub-date><volume>484</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>605</fpage><lpage>609</lpage><history><date date-type="received" iso-8601-date="2019-05-21"><day>21</day><month>05</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-05-21"><day>21</day><month>05</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/12781">https://journals.eco-vector.com/0869-5652/article/view/12781</self-uri><abstract xml:lang="en"><p>Experimental data are presented to show that the spatial and temporal variability of the composition of river waters cannot be explained solely by the influence of sources and effluents of the substances and that there are additional significant factors that support or even initiate the dispersion of the concentration of pollutants here. This variation is reflected in the resources and the economic characteristics of the rivers; so identification of its reason is important. Thus, the hydrodynamic structure of the water flow is studied by analyzing the complete system of equations of fluid motion mechanics. The completed work allowed us to show that the elements of this structure are waves, vortices, and highly gradient layers (ligaments), presumably creating the described dispersion effect. Further investigation of the relationship of the precise hydrodynamic and hydrochemical structures of river waters will contribute to better understanding of the water-environmental processes, ensuring the perfection of water management methods.</p></abstract><trans-abstract xml:lang="ru"><p>Приведены экспериментальные данные, свидетельствующие о том, что пространственно-временное непостоянство состава речных вод нельзя объяснить исключительно влиянием источников и стоков вещества, и существуют дополнительные значимые факторы, поддерживающие или даже инициирующие здесь разброс концентрации загрязняющих веществ. Такой разброс отражается на ресурсно-хозяйственных характеристиках рек, поэтому актуально выяснение его причины. В связи с этой задачей исследована гидродинамическая структура водного потока путём анализа полной системы уравнений механики движения жидкости. Выполненная работа позволила показать, что элементами этой структуры являются волны, вихри и высокоградиентные прослойки (лигаменты), предположительно создающие описанный эффект разброса.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rivers</kwd><kwd>chemistry</kwd><kwd>composition</kwd><kwd>heterogeneous structure</kwd><kwd>conservation</kwd><kwd>physical mechanisms</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>реки</kwd><kwd>химия</kwd><kwd>состав</kwd><kwd>неоднородная структура</kwd><kwd>сохранение</kwd><kwd>физические механизмы</kwd></kwd-group><funding-group><award-group><award-id></award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Реки и озера мира. Энциклопедия / Под ред. В.И. Данилов-Данильяна. М.: Энциклопедия, 2012. 925 с.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>https://www.tripadvisor.ru/ShowUserReviews-g303235-d554183-r229755948.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Rozental O.M., Averbuсh A.I. Water Resources Development: Economic and Legal Aspects // Introduction Water Qualimetry. 2013. V. 40. № 4. P. 447–461.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Grill S., Zykov V.S., Muller S.C. Feedback Controlled Dynamics of Meandring Spiral Waves // Phys. Rev. Lett. 1995. V. 75. № 18. P. 3368–3371.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Rossi F., Vanag V.K., Epstein I.R. Pentanary Cross-Diffusion in Water-inOil Microemulsions Loaded with Two Components of the BelousovZhabotinsky Reaction// Chemistry. 2013. V. 17. № 7. P. 2138–2145.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Hou M.J., Shah D.O. Effects of the Molecular Structure of the Interface and Continuous Phase on Solubilization of Water in Water/Oil Microemulsions// Langmuir. 1987. V. 3. P. 1086–1096.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Anikeenko A.V., Malenkov G.G., Naberukhin Yu.I. Visualization of the Collective Vortex-Like Motions in Liquid Argon and Water: Molecular Dynamics Simulation // J. Chem. Phys. 2018. V. 148. № 9. P. 1660–1662.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Аникеенко А.В., Наберухин Ю.И. Крупномасштабные и долговременные корреляции в коллективных движениях атомов жидкого аргона. Компьютерное моделирование // Письма в ЖЭТФ. 2017. T. 106. № 5. C. 269–274.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Зицерман В.Ю. Махновский Ю.А., Трахтенберг Л.И. и др. Дрейф частиц, обусловленный флуктуациями их размера // Письма в ЖЭТФ. 2017. Т. 105. № 5. С. 315–321.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Chashechkin Yu.D. Differential Fluid Mechanics – Harmonization of Analytical, Numerical and Laboratory Models of Flows // Math. Modeling and Optim. of Complex Struct. Springer Ser. Computat. Methods in Appl. Sci. 2016. V. 40. P. 61–91.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Зоммерфельд А. Термодинамика и статистическая физика. М.: Изд-во иностр. лит., 1955. 482 с.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Ландау Л.Д., Лифшиц Е.М. Теоретическая физика. Т. 6. Гидродинамика. М.: Наука, 1986. 736 с.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Sukharev Yu.I., Markov B.A. Liesegang Operator. Liesegang Rings as the Common Gross–Property of Oxyhydrate Gel Polymer Systems. The Chemistry Preprint Server. 7 April 2000. http://preprint.chemweb.com/physchem/0104005.</mixed-citation></ref></ref-list></back></article>
