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351.
Gubanova D. P. Chkhetiani O. G. Kuderina T. M. Iordanskii M. A. Obvintsev Y. I. Artamonova M. S. 《Izvestiya Atmospheric and Oceanic Physics》2018,54(8):777-793
Izvestiya, Atmospheric and Oceanic Physics - This paper summarizes the results of long-term (2004–2016) comprehensive experimental studies of microphysical parameters and the mass... 相似文献
352.
Bondur V. G. Vorobyev V. E. Zamshin V. V. Serebryany A. N. Latushkin A. A. Li M. E. Martynov O. V. Hurchak A. P. Grinchenko D. V. 《Izvestiya Atmospheric and Oceanic Physics》2018,54(9):1008-1022
Izvestiya, Atmospheric and Oceanic Physics - The results of comprehensive monitoring of anthropogenic impact on some coastal water areas of the Black Sea are presented. Multispectral satellite... 相似文献
353.
Vazaeva N. V. Chkhetiani O. G. Maksimenkov L. O. 《Izvestiya Atmospheric and Oceanic Physics》2019,55(2):152-166
Izvestiya, Atmospheric and Oceanic Physics - An investigation into mesoscale roll circulation and its transport characteristics in the atmospheric boundary layer (ABL) is carried out. The case... 相似文献
354.
Gorchakov G. I. Sitnov S. A. Karpov A. V. Gorchakova I. A. Gushchin R. A. Datsenko O. I. 《Izvestiya Atmospheric and Oceanic Physics》2019,55(3):261-270
Izvestiya, Atmospheric and Oceanic Physics - The technique for constructing the spatial distribution of maximum aerosol optical depth (MAOD) has been used to estimate the optically dense haze... 相似文献
355.
V. O. Mokievsky L. V. Vorobjeva L. A. Garlitska M. A. Miljutina N. V. Kucheruk 《Oceanology》2010,50(6):945-952
The results of meiobenthic surveys undertaken in 1991, 1999, and 2005 off the Caucasian coasts of the Black Sea are presented.
During the period of 1991 to 1999, the number of free-living nematodes increased significantly at all the sampling stations.
The mean nematode abundance values grew from 85 ind./10 cm2 in 1991 to 1167 ind./10 cm2 in 1999. Proportionally, the total metazoan meiofauna density increased from 171 to 1283 ind./10 cm2. The abundance of other meiofaunal groups including harpacticoid copepods did not change significantly. As a result of these
changes, the ratio of nematodes to copepods (the nematodes-copepods index) increased from 2.5: 1 in 1991 to 26: 1 in 1999
and to 70: 1 in 2005. The number of foraminifers increased twofold. In 1991, they were found only at five stations out of
25. In 1999, foraminifers were presented at all ten stations with a mean density of 212 ind./10 cm2. Such changes in the meiobenthic communities could have resulted from cascade transformations of the ecosystem leading to
among other changes to a decline in the macrobenthos biomass and the release of nonutilized organic matter in the bottom ecosystems.
The differences in the procedures of the sampling and the samples’ processing in the different years may be responsible for
the 20–30% variation in the assessment of the meiobenthos’ number. 相似文献
356.
S. I. Prokopiev T. E. Ovchinnikova O. F. Vasiliev 《Izvestiya Atmospheric and Oceanic Physics》2010,46(2):256-260
To adequately describe the hydrophysical processes in water bodies with a high mineralization, it is necessary to take into
account the dependence that the thermodynamic characteristics of water have on the amount of salts contained in it. This work
investigates some widely known formulas for calculating a number of thermodynamic parameters of mineralized water. The density,
freezing temperature, specific heat of evaporation, and relative pressure of saturated vapor over the surface are considered.
The possibilities of using these formulas when modeling hydrophysical processes in water bodies with salinity in the range
of 0–250 pro mille are analyzed. It is shown that the formulas under consideration should be used when the salinity does not
exceed 100 pro mille. If the mineralization is higher, it is necessary to elaborate more suitable formulas on the basis of
an approximation of in situ data or data from handbooks. 相似文献
357.
V. I. Man’kovskii G. A. Tolkachenko E. B. Shibanov O. V. Martynov E. N. Korchemkina D. V. Yakovleva I. A. Kalinskii 《Physical Oceanography》2010,20(3):207-230
We present the results of measurements of optical characteristics of waters (the beam attenuation coefficient, volume scattering
function, sea water reflectance, and Secchi depth) and optical characteristics of the atmosphere (aerosol optical thickness,
content of vapors, and the ?ngstr?m exponent) carried out in September 2008 on the oceanographic platform near Katsiveli.
We carried out the comparative analysis of hydrooptical characteristics measured in various years. The optical type of sea
waters in the period of observations is determined. 相似文献
358.
A. G. Zatsepin E. G. Morozov V. T. Paka A. N. Demidov A. A. Kondrashov A. O. Korzh V. V. Kremenetskiy S. G. Poyarkov D. M. Soloviev 《Oceanology》2010,50(5):643-656
During cruise 54 of the R/V Akademik Mstislav Keldysh to the southwestern Kara Sea (September 6 to October 7, 2007), a large amount of hydrophysical data with unique spatial resolution
was obtained on the basis of measurements using different instruments. The analysis of the data gave us the possibility to
study the dynamics and hydrological structure of the southwestern Kara Sea basin. The main elements of the general circulation
are the following: the Yamal Current, the Eastern Novaya Zemlya Current, and the St. Anna Trough Current. All these currents
are topographically controlled; they flow over the bottom slopes along the isobaths. The Yamal Current begins at the Kara
Gates Strait and turns to the east as part of the cyclonic circulation. Then, it turns to the north and propagates along the
Yamal coast over the 100-m isobath. The Eastern Novaya Zemlya Current (its core is located over the eastern slope of the Novaya
Zemlya Trough) flows to the northeast. Near the northern edge of Novaya Zemlya, it encounters the St. Anna Trough Current,
separates from the coast, and flows practically to the east merging with the continuation of the Yamal Current. A strong frontal
zone is formed in the region where the two currents merge above the threshold that separates the St. Anna Trough from the
Novaya Zemlya Trough and divides the warm and saline Arctic waters from the cooler and fresher waters of the southwestern
part of the Kara Sea. This threshold, whose depth does not exceed 100–150 m, is a barrier that prevents the spreading of the
Barents Sea and Arctic waters to the southwestern part of the Kara Sea basin through the St. Anna Trough. 相似文献
359.
Recently, the TOPEX/POSEIDON Science Working Team has recommended the FES95.2.1 and CSR3.0 ocean tide models for reprocessing the TOPEX/POSEIDON Geophysical Data Records. Without doubt, the performance of these models, especially in the deep oceans, is excellent. However, from a comparison of these hydrodynamically consistent models with the purely empirical DW3.2 and DEOS96.1 models, it appears that FES95.2.1 and CSR3.0 are affected by basin boundary related errors which are caused by the basin-wise solution procedure of the FES ocean tide model series. In their turn, the empirical DW3.2 and DEOS96.1 models seem to suffer from significant errors in the Antarctic seas due to the seasonal growth and decay of Antarctic sea ice. Also, bathymetry-induced differences were found between the hydrodynamically consistent models and the empirical models. Concerning these differences, TOPEX/POSEIDON and ERS-1 crossover statistics unfortunately do not provide conclusive results on which models are in error. 相似文献
360.
The aqueous photochemical transformation of acrylic acid 总被引:3,自引:0,他引:3
Acrylic acid in sea water is thought to occur mostly as the product of microbial cleavage of dimethylsulphoniopropionate (DMSP), but could also be a pollutant introduced by waste waters of the organic chemical industry. Solutions of acrylic acid in natural and artificial sea water, and distilled and riverine water were photolyzed using a photochemical reactor and exposure to sunlight. The transformation of acrylic acid comprises the decarboxylation of the carboxylic group and subsequent polymerization to a polyethylene type molecule. Kinetic studies showed the lowest reaction rate in distilled water and somewhat higher and very similar rates in other aqueous media. The approximately similar reaction rates in all natural waters studied suggest that inorganic ions, especially Na+, Mg2+ and halides, and dissolved organic matter (probably humics) enhance the reaction rates. On studying the influence of different concentration ranges on the reaction kinetics, an exponential increase of rates with decreasing concentration was found. The reaction rate in the sea water solution in field conditions is rather slow. In thirty days exposure about 15% of the reactant was transformed. This reaction seems to be important in the marine environment in specific conditions, especially in phycospheres and macroaggregates where higher concentrations of acrylic acid inhibit the bacterial metabolism. 相似文献