Atlas of Japan (East) Sea hydrographic properties in summer, 1999     

Lynne D. Talley  Pavel Tishchenko  Vladimir Luchin  Alexander Nedashkovskiy  Sergey Sagalaev  Dong-Jin Kang  Mark Warner  Dong-Ha Min 《Progress in Oceanography》2004,61(2-4):277

Hydrographic properties from CTD and discrete bottle sample profiles covering the Japan (East) Sea in summer, 1999, are presented in vertical sections, maps at standard depths, maps on isopycnal surfaces, and as property–property distributions. This data set covers most of the Sea with the exception of the western boundary region and northern Tatar Strait, and includes nutrients, pH, alkalinity, and chlorofluorocarbons, as well as the usual temperature, salinity, and oxygen observations.  相似文献   

Hypoxia of bottom waters of the Razdolnaya River estuary     

Tishchenko  P. Ya.  Semkin  P. Ju.  Tishchenko  P. P.  Zvalinsky  V. I.  Barabanshchikov  Yu. A.  Mikhailik  T. A.  Sagalaev  S. G.  Shvetsova  M. G.  Shkirnikova  E. V.  Shulkin  V. M. 《Doklady Earth Sciences》2017,476(2):1207-1211

The hypoxia of the bottom waters in the Razdolnaya River estuary was observed for the first time in September 2014 during the survey. It is formed as in the seaward part: oxygen is absorbed as a result of destruction of excessive phytoplankton biomass that settles to the bottom and is synthesized on the upper horizon. The high value of primary production in the riverine part of the estuary was caused by the pycnocline formed. Thus, phytoplankton “blooms” above and undergoes destruction beneath the pycnocline. Oxygen is distributed symmetrically in both parts of the estuary with respect to a bar: similar oxygen concentrations, which are maximum on the surface and minimum at the bottom, 300 and <60 μm/L, respectively, are recorded. The anomalies of hydrochemical parameters that have been formed during this process are sharply different in the two parts of the estuary, which most vividly manifests itself in the N/P value and the partial pressure of carbon dioxide pCO₂. The causes of this unique situation are discussed.

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The influence of geochemical processes in the near-bottom layer on the hydrochemical characteristics of the waters of the Sea of Japan     

P. Ya. Tishchenko  L. D. Talley  V. B. Lobanov  A. P. Nedashkovskii  G. Yu. Pavlova  S. G. Sagalaev 《Oceanology》2007,47(3):350-359

According to the results of the international expedition aboard the R/Vs Roger Revelle and Professor Khromov in the summer 1999, areas with low oxygen contents (below 210 μM/kg) and those with increased contents of dissolved inorganic carbon and phosphates were found that roughly coincided with one another. These areas are located near the bottom on the southwestern slope of the Tsushima Basin in the region of the Korea Strait and on the continental slope in the region of the Tatar Strait in the northern part of the sea at about 46° N. The set of hydrochemical data points to a high geochemical activity in the near-bottom layer of the areas noted. This activity is confirmed by direct observations of the composition of the interstitial water in the sediments collected in the northern part of the sea during the expedition of R/V Akademik M.A. Lavrent’ev in 2003. It was supposed that the main cause of the increased geochemical activity is the runoff of suspended and dissolved matter from the Korea and Tatar straits. In the areas mentioned, the near-bottom waters are characterized by low values of the nitrogen-phosphorus ratio (below 10), which is geochemical proof of the denitrification process occurring under the conditions of high oxygen concentrations characteristic of the Sea of Japan. Based on the value of the annual production in the Sea of Japan, a rate of denitrification equal to 3.4 × 10¹² gN/year was calculated. Hence, it is confirmed that the geochemical processes in the near-bottom layer have a direct influence on the spatiotemporal characteristics of the hydrochemical properties of the waters of the Sea of Japan.  相似文献   

Major ion composition and carbonate equilibrium in the sediment pore water of the Razdol’naya River estuary of Amur Bay,the Sea of Japan     

G. Yu. Pavlova  P. Ya. Tishchenko  N. D. Khodorenko  M. G. Shvetsova  S. G. Sagalaev 《Russian Journal of Pacific Geology》2012,6(3):251-262

The complex study of the river water and pore solutions from the bottom sediments in the lower reaches of the Razdol’naya River was conducted in February 2010. The major ion composition of the waters indicates the submarine origin of the near-bottom and pore waters in the lower reaches of the Razdol’naya River in the winter. The river estuary extends upstream for more than 20 km. It was established that the studied sediments are reduced oozes containing pyrite, hydrotroilite, and iron monosulfide, which is direct evidence for sulfate-reduction in the sediments. The diagenesis of organic matter is the main reason for the considerable decrease in the amount of sulfates and the increase in the alkalinity of the sediment pore water. The sedimentary pore water sampled from the deep river pits is characterized by excess alkalinity that cannot be explained by sulfate-reduction and methane genesis. It was suggested that the chemical weathering of silicate minerals and the bacterial mineralization of salts of organic acids could result in the excess alkalinity of the sediment pore water.  相似文献   

Comprehensive Research of the Coastal Water Area of the Sea of Japan and Sea of Okhotsk under the Influence of River Runoff (Cruise 71 of the R/V <Emphasis Type="Italic">Professor Gagarinskii</Emphasis>)     

P. Ya. Tishchenko  V. B. Lobanov  V. M. Shul’kin  V. V. Mel’nikov  I. B. Tsoi  P. Yu. Semkin  P. P. Tishchenko  V. A. Bannov  O. V. Belous  L. E. Vasil’eva  O. A. Elovskaya  S. G. Sagalaev  Yu. V. Fedorets 《Oceanology》2018,58(2):325-327

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Diagenesis of Organic Matter in Eelgrass (Zostera marina L.) Vegetated Sediments     

Tishchenko  P. Ya.  Khodorenko  N. D.  Barabanshchikov  Yu. A.  Volkova  T. I.  Mar’yash  A. A.  Mikhailik  T. A.  Pavlova  G. Yu.  Sagalaev  S. G.  Semkin  P. Yu.  Tishchenko  P. P.  Shvetsova  M. G.  Shkirnikova  E. M. 《Oceanology》2020,60(3):341-352

Oceanology - In February and July 2014, multidisciplinary geochemical studies of the sediments were carried out at two stations. One of them was located in Voevoda Bight, which has a bottom depth...  相似文献   

Study of the State and Variability of Marine Environment in the Japan/East Sea in Cruise 58 of the R/V Akademik Oparin     

Lobanov  V. B.  Sergeev  A. F.  Kim  G.  Nam  S.  Maryina  E. N.  Han  H.  Popov  O. S.  Tishchenko  P. P.  Vlasova  G. A.  Zverev  S. A.  Choi  S. J.  Jeong  H.  Kim  B.  Kim  Y.  Kim  S. Y.  Lee  I.  Lee  H.  Lee  H.  Leusov  A. E.  Mariaysh  A. A.  Prushkovskaya  I. A.  Rudykh  Y. N.  Ryu  Y.  Ryumina  A. A.  Sagalaev  S. G.  Semkin  P. Y.  Seo  H.  Shkirnikova  E. M.  Shlyk  N. V.  Shvetsova  M. G.  Tsoi  V.  Ulanova  O. A. 《Oceanology》2021,61(4):586-588

Oceanology - Multiyear monitoring of the marine environment of the Japan/East Sea was continued by the joint Korean–Russian expedition of the R/V Akademik Oparin (cruise 58) in...  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   

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