Weakly non-linear free oscillations in a basin of variable depth     

A. V. Konovalov  Yu. V. Manilyuk  L. V. Cherkesov 《Physical Oceanography》1992,3(2):87-94

Weakly non-linear free oscillations in a basin of variable depth filled with non-viscous fluid are investigated in terms of the long waves theory using the perturbation technique. Solutions to the initial two approximations for the horizontal velocity component and free surface departure are numerically derived. An attempt is made to determine the area of applicability of the linear theory by applying a parabolic bottom profile to the basin.Translated by V. Puchkin.  相似文献   

The mixing efficiency and the processes of restratification in a stably stratified medium     

V. S. Maderich  O. M. Konovalov  S. I. Konstantinov 《Physical Oceanography》1994,5(1):21-26

The mechanism of the effect of a collapsing turbulent eddy on diapycnal transport in a stably stratified fluid is considered. It is shown that at small Richardson turbulent numbersRi ₀ the mixing efficiency increases asRi ₀, and at large numbers it decreases in proportion toRi ₀ ^–1/2 .Translated by Mikhail M. Trufanov. UDK 551.465.15.  相似文献   

Numerical modelling of tsunami propagation in the open Black Sea     

S. F. Dotsenko  A. V. Konovalov 《Physical Oceanography》1996,7(1):65-77

This paper focuses on the numerical modelling of tsunami propagation in the open Black Sea. Two types of numerical models are discussed: a model for the radial propagation of long waves and an evolutionary finite-difference prognostic model. Experimentally derived numerical data on the model source of tsunamis are reported. Translated by Vladimir A. Puchkin.  相似文献   

Effect of photochemical self-action of carbon-containing aerosol: Wildfires     

I. B. Konovalov  E. V. Berezin  M. Beekmann 《Izvestiya Atmospheric and Oceanic Physics》2016,52(3):263-270

It has been shown by numerical simulation that the rate of formation of secondary organic aerosols (SOAs) in smoke plumes caused by vegetation and peat fires under real conditions can significantly depend on the aerosol optical thickness (AOT). The AOT determines the photodissociation rate and hydroxyl radical concentration, which in turn determines the rate of SOA generation as a result of oxidation of semivolatile organic compounds. Quantitative analysis has been carried out for the situation that took place in European Russia during the 2010 Russian wildfires. The state-of-the-art 3D chemical transport model is used in this study; the simulations are optimized and validated using the data of monitoring of the particulate matter in the Moscow region and Finland. The findings indicate that it is important to allow for this effect in studies focused on the analysis and prediction of air pollution due to wildfires, as well as climate and weather studies, whose results may depend on the assumptions about the content and properties of atmospheric carbon-containing aerosol.  相似文献   

First Data about Mercury in Modern Hydrothermal Process in the Ocean,Juan de Fuca Ridge     

Yu. I. Konovalov  L. N. Luchsheva  V. B. Kurnosov 《Doklady Earth Sciences》2018,480(1):575-579

The results of studying Hg in an underwater hydrothermal system in the ocean using the Middle Valley of the Juan de Fuca ridge as an example are presented. A significant part of Hg is accumulated in the basalt fundament (Holes 858F, G), forming anomalously high concentrations (up to 29.30 ppm) in certain parts. The high Hg contents were established in metalliferous sediments (323 ppm) of the sedimentary cover (Hole 858D) and in sulfide deposits (up to 10.30 ppm). In other parts of the section, Hg content is 0.02–0.76 ppm (Holes 858B, D, F), background Hg contents in sediments—0.08–0.28 ppm and in basalts—0.17–0.31 ppm (Holes 855A, C, D).  相似文献   

The Strong Earthquake in Sakhalin Island in September 13, 2020     

Konovalov  A. V.  Khanchuk  A. I.  Stepnov  A. A.  Stepnova  Yu. A. 《Doklady Earth Sciences》2021,497(1):242-245

Doklady Earth Sciences - The seismotectonic position of the strong earthquake that occurred in the southern part of Sakhalin Island on September 13, 2020, is considered. The maximum shaking...  相似文献   

Long-term changes of water balance components in the basins of rivers fed by snow and ice     

V. G. Konovalov 《Russian Meteorology and Hydrology》2007,32(8):529-537

The variability of the main components of the annual water balance (precipitation, evaporation, glacial alimentation, and dynamic water reserves in the basin) for 1935–1990 is, for the first time, determined for the area where the Zeravshan runoff is formed, higher than hydrological post Dupuli is located. Long-term data on the annual Zeravshan River runoff from an area of 10 200 km² were derived from the measurements at Dupuli hydrological post. The other water balance components were determined with the help of computation methods. Comparison of the measured and calculated volumes of the annual runoff demonstrated that a relative difference between them is systematic, and as a whole for a computation period it is in the interval from ?0.31 to ?4.78%. The annual balance of accumulation and thawing of solid precipitation on glaciers and in the extraglacial area is also determined in the Zeravshan River basin. A new method for computing and mapping spatial variability of the maximum snowline altitude is developed.  相似文献   

Assessment of Pollution of the Kerch Strait and Adjacent Black Sea Area Based on Field Measurements of 2019–2020     

Zavialov  P. O.  Zavialov  I. B.  Izhitskiy  A. S.  Izhitskaya  E. S.  Konovalov  B. V.  Krementskiy  V. V.  Nemirovskaya  I. A.  Chasovnikov  V. K. 《Oceanology》2022,62(2):162-170

Oceanology - The paper presents the results of an analysis of the main pollutants (heavy metals, pesticides, detergents, hydrocarbons) in water, suspended particulate matter, and bottom sediments,...  相似文献   

Hydrophysical and hydrochemical characteristics of the sea areas adjacent to the estuaries of small rivers of the Russian coast of the Black Sea     

P. O. Zavialov  P. N. Makkaveev  B. V. Konovalov  A. A. Osadchiev  P. V. Khlebopashev  V. V. Pelevin  A. B. Grabovskiy  A. S. Izhitskiy  I. V. Goncharenko  D. M. Soloviev  A. A. Polukhin 《Oceanology》2014,54(3):265-280

This paper presents the results of long-term in situ and satellite measurements at shelf areas adjacent to the estuaries of the small rivers of the Russian coast of the Black Sea (Mezyb, Pshada, Vulan, Tuapse, Bitkha, Sochi, Cudepsta, Mzymta). The quantitative characteristics of the response of the hydrophysical and hydrochemical fields at the sea shelf on the influence of the continental river discharge are presented for each of these areas. A number of indicators of the water quality (the concentrations of the nitrate and nitrite forms of nitrogen, the phosphorus, the silica, the dissolved oxygen, the value of the total alkalinity and pH, the mineral and organic suspended matter, and the chlorophyll a) are considered in the context of the anthropogenic and terrigenous influence. In this paper, the emphasis was placed on the Mzymta River plume at the shelf area adjacent to the city of Sochi, where the measurements were repeatedly performed during the spring flooding conditions in the period from 2007 until 2012. The interannual variability of the water quality indicators and the seasonal and short-term variability of the area and the configuration of the plume, which transports suspended matter and anthropogenic pollution, were considered.  相似文献   

Origin of Hydrocarbons in Suspended Matter and Bottom Sediments near the Crimean Peninsula     

Nemirovskaya  I. A.  Onegina  V. D.  Lisitzin  A. P.  Konovalov  B. V. 《Doklady Earth Sciences》2019,484(2):189-193

Doklady Earth Sciences - The study of hydrocarbons has shown that their content in the surface water of Feodosiya Gulf varies greatly (from 11 to 179 µg/L) and sometimes exceeds the maximal...  相似文献