Water Dynamics and Structure in the Estuary of the Partizanskaya River (Nakhodka Bay,Sea of Japan)     

Semkin  P. Yu.  Tishchenko  P. Ya.  Lobanov  V. B.  Sergeev  A. F.  Barabanshchikov  Yu. A.  Mikhailik  T. A.  Pavlova  G. Yu.  Kostyleva  A. V.  Shkirnikova  E. M.  Tishchenko  P. P.  Chizhova  T. L. 《Water Resources》2019,46(1):29-38

Water Resources - Field studies of the seasonal and daily dynamics of the mixing zone were carried out in the microtidal estuary of the Partizanskaya River. The position of the mixing zone was...  相似文献   

Studying the development of atmospheric processes associated with blocking and quasistationary anticyclones in the Atlantic European sector     

V. A. Tishchenko  V. M. Khan  R. M. Vil’fand  E. Roget 《Russian Meteorology and Hydrology》2013,38(7):444-455

Carried out are the statistical analysis of spatiotemporal characteristics of quasistationary and blocking anticyclones in the Atlantic European sector, their classification, and the analysis of large-scale circulation in the lower and middle troposphere preceding the formation of different classes of blocking anticyclones. Studied are the threshold conditions of anticyclone blocking in the lower and middle troposphere in the Atlantic European sector. Determined are the typical situations, when the formed dipoles of heat and cold are observed in the area of the future blocking in the lower troposphere as well as the formed ridges or divergence of flows in the middle troposphere. A conclusion can be made on the possibility of using the information about blocking anticyclones in the schemes of long-range forecasting of thermal regime.  相似文献   

Seasonal Variability of Polycyclic Aromatic Hydrocarbons (PAHs) in a Coastal Marine Area in the Northwestern Region of the Sea of Japan/East Sea (Possiet Bay)     

Koudryashova  Yuliya  Chizhova  Tatiana  Tishchenko  Pavel  Hayakawa  Kazuichi 《Ocean Science Journal》2019,54(4):635-655

Ocean Science Journal - Contamination by persistent organic pollutants including polycyclic aromatic hydrocarbons (PAHs) constitutes a major concern in relation to aquatic ecosystems. To study the...  相似文献   

Carbonate equilibrium in the water of the Razdol’naya River     

P. Ya. Tishchenko  T. A. Mikhailik  G. Yu. Pavlova  P. P. Tishchenko  A. M. Koltunov  Jing Zhang 《Geochemistry International》2017,55(3):282-293

The paper suggests an accurate approach to studying carbonate equilibrium in the water of the Razdol’naya River. The approach involves measuring pH by Pitzer’s scale, using a cell without liquid junction; measuring the total alkalinity by Bruevich’s technique; and using apparent constants of carbonate equilibrium with regard for the organic alkalinity. The Pitzer technique was employed to calculate the apparent constants of carbonate equilibrium in solution that models the riverine water: Ca(HCO₃)₂–NaCl–H₂O within the range of alkalinity of 0–0.005 mol/kg and temperatures of 0–25°C. Carbonate equilibrium in the water of the Razdol’naya River was sampled for studying at eight sites during all four seasons. Although the contents of biogenic compounds in the water are high, they can merely insignificantly affect the acid–base equilibrium, which is controlled in the riverine water by carbonate equilibrium and the concentrations of humic substances, which play the greater role, the greater the discharge of the river. In addition to the production and destruction of organic matter, carbonate equilibrium in the river is also affected by the supply of humic substances with soil waters and total alkalinity with groundwaters. The fluxes of alkalinity and humic substances annually brought by the Razdol’naya River to Amur Bay are evaluated at 1.33 × 10⁹ mol and 9.9 × 10⁶ kgC, respectively. The carbon dioxide export with the Razdol’naya River is equal to the alkalinity flux and does not depend on the weathering mechanisms.  相似文献   

Ventilation of the Sea of Okhotsk water in summer     

V. A. Sosnin  P. Ya. Tishchenko  A. N. Salyuk  N. Biebow 《Russian Meteorology and Hydrology》2007,32(1):50-53

Data of field observations are indicative of the periodic appearance of intrusions of cold water at depths of 250–400 m near the northeastern Sakhalin continental slope in summer. Monitoring of the oceanographic conditions in the area shows that the density contrast between shelf and offshore waters persists throughout the year. The static instability of the water column in the vicinity of shelf break and the continental slope is a permanent feature of the area during the year and is the main cause of ventilation of the Sea of Okhotsk water in summer. The energy of tides can be an additional drive for the penetration of shelf waters into the sea interior and modulate the ventilation process.  相似文献   

Hydrochemistry of the Tumen River Estuary,Sea of Japan     

P.?Ya.?TishchenkoEmail author  P.?Yu.?Semkin  G.?Yu.?Pavlova  P.?P.?Tishchenko  V.?B.?Lobanov  A.?A.?Marjash  T.?A.?Mikhailik  S.?G.?Sagalaev  A.?F.?Sergeev  E.?Yu.?Tibenko  N.?D.?Khodorenko  R.?V.?Chichkin  M.?G.?Shvetsova  E.?M.?Shkirnikova 《Oceanology》2018,58(2):175-186

The hydrological and hydrochemical parameters of the Tumen River estuary were collected at 13 stations in May and October 2015. Vertical temperature, conductivity, dissolved oxygen, chlorophyll fluorescence, and turbidity profiles were obtained. Water was sampled from the surface and bottom layer. The water samples were analyzed for major ions, pH, salinity, concentrations of dissolved oxygen, major nutrients, dissolved organic carbon, humic matter, and δ¹⁸О and δD isotopes. This estuary is attributed to microtidal type with a flushing time of about 10 h. A phytoplakton bloom occurred in the top layer of the estuary. For surface horizons, the hydrochemical parameters show a linear correlation with salinity. In the bottom horizons, all these parameters, except for major ions and δ¹⁸О and δD isotopes, reveal substantial nonconservative behavior. The nonconservative behavior of the hydrochemical parameters in the bottom waters was mainly caused by degradation of the phytoplankton biomass at the water/sediment interface. Hypoxic conditions were established in the bottom waters of the estuary in May.  相似文献   

The effect of Razdol’naya River on the environmental state of Amur Bay (the Sea of Japan)     

T. A. Mikhailik  P. Ya. Tishchenko  A. M. Koltunov  P. P. Tishchenko  M. G. Shvetsova 《Water Resources》2011,38(4):512-521

Seasonal variations in biogenic substances (nitrates, nitrites, ammonium, phosphates, and silicates), dissolved oxygen, dissolved organic matter, chlorophyll, humus, and suspended matter at seven stations on the Razdol’naya River are examined. Based on seasonal variations, the local sources of river water pollution by biogenic substances were identified. The annual and daily fluxes of biogenic substances through the Razdol’naya River into Amur Bay are calculated. A diffuse pollution source—agricultural fields in river valley—are shown to be the main source of biogenic substance fluxes. The vast hypoxia in the bottom water of Amur Bay, detected by the authors in 2007 and 2008, is supposed to be mostly caused by floods on the Razdol’naya R., which create favorable conditions of water blooming in Amur Bay in summer. The biomass of dead phytoplankton, experiencing microbiological decomposition and oxidation, causes hypoxia of bottom waters in the bay.  相似文献   

Hydrochemical Study of Academy Bay (Sea of Okhotsk)     

Tishchenko  P. Ya.  Lobanov  V. B.  Tishchenko  P. P.  Semkin  P. Yu.  Sergeev  A. F.  Anisimova  E. V.  Barabanshchikov  Yu. A.  Melnikov  V. V.  Ryumina  A. A.  Sagalaev  S. G.  Ulanova  O. A.  Shvetsova  M. G.  Shkirnikova  E. M. 《Oceanology》2022,62(1):80-92

Oceanology - The hydrological and hydrochemical data of surface and bottom waters of Academy Bay were obtained on two POI FEB RAS cruises carried out from July 11 to 14, 2016 and from September 15...  相似文献   

The Carbonate System of the Estuaries of the Syran and Ul’ban Rivers (Ul’banskii Bay,the Sea of Okhotsk) during Spring Flood     

Semkin  P. Yu.  Tishchenko  P. Ya.  Pavlova  G. Yu.  Tishchenko  P. P.  Sagalaev  S. G.  Shkirnikova  E. M.  Shvetsova  M. G. 《Water Resources》2022,49(5):869-879

Water Resources - In the period of summer flood 2016, a number of chemical characteristics associated with carbon cycle were studied in the estuaries of the Syran and Ul’ban rivers in the...  相似文献   

Intercalibration of Bruevich’s method to determine the total alkalinity in seawater     

G. Yu. Pavlova  P. Ya. Tishchenko  T. I. Volkova  A. Dickson  K. Wallmann 《Oceanology》2008,48(3):438-443

In 2000, the Carbon Dioxide in the Ocean working group of the North Pacific Marine Science Organization (PICES) performed an international experiment on the intercalibration of the measurements of the total alkalinity in seawater using certified reference materials (CRM). Taking part in this experiment, Russian specialists presented the method by Bruevich. The results of the intercalibration showed that the alkalinity values obtained by Bruevich’s method using modern burettes, an Na₂CO₃ reactant of high purity as a standard to ascertain the acid titre, and corrections for the acid density and for the weights of the acid and seawater samples in vacuum are in agreement with the standard within ±1 μ M/kg.  相似文献