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Semkin P. Yu. Tishchenko P. Ya. Charkin A. N. Pavlova G. Yu. Tishchenko P. P. Anisimova E. V. Barabanshchikov Yu. A. Leusov A. E. Mikhailic T. A. Tibenko E. Yu. Chizhova T. L. 《Water Resources》2021,48(3):345-350
Water Resources - In February 2020, geochemical tracers along with hydrochemical and hydrological characteristics were used to reveal a discharge site of salt groundwaters in the head of the... 相似文献
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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.
相似文献3.
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
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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
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Semkin P. Yu. Tishchenko P. Ya. Tishchenko P. P. Pavlova G. Yu. Anisimova E. V. Barabanshchikov Yu. A. Mikhailic T. A. Charakin A. N. Shvetsova M. G. 《Water Resources》2022,49(3):429-439
Water Resources - The activity of dissolved radium isotopes 223Ra, 224Ra, 228Ra, the concentrations of nutrients: ammonium, nitrates, nitrites, phosphates, silicates, total nitrogen, and total... 相似文献
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Katrasov S. V. Bugaets A. N. Zharikov V. V Maslennikov S. I. Lysenko V. N. Barabanshchikov Yu. A. Tishchenko P. Ya. 《Oceanology》2021,61(5):668-676
Oceanology - The potential productivity of oysters and mussels was estimated for Voevoda Bay (Russky Island, Primorskii krai) using the FARM model. The main sources of primary production in the... 相似文献
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P. A. Stunzhas P. Ya. Tishchenko V. V. Ivin Yu. A. Barabanshchikov T. I. Volkova D. I. Vyshkvartsev V. I. Zvalinskii T. A. Mikhailik P. Ju. Semkin P. P. Tishchenko N. D. Khodorenko M. G. Shvetsova F. M. Golovchenko 《Doklady Earth Sciences》2016,467(1):295-298
In August 2013, anoxia of the bottom waters was established in the southern region of the Far East Marine Biosphere Reserve, Far East Branch, Russian Academy of Science, in the depression between Furugelm Island and coastal waters. Death of the benthic community was registered using a remotely operated underwater vehicle. The hydrochemical studies revealed that the area of the absence and/or presence of low oxygen contents corresponds to an area of anomalously high contents of ammonium, phosphates, and silicates, a high partial pressure of carbon dioxide and normalized alkalinity, and the presence of hydrogen sulfide. The microbiological decomposition of diatoms precipitated on the seafloor in the absence of oxygen regeneration was the reason for anoxia. Its formation in summer of 2013 was caused by anomalously abundant precipitates in the Far East. 相似文献
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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
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P. Ya. Tishchenko Yu. A. Barabanshchikov T. I. Volkova A. A. Marjash T. A. Mikhailik G. Yu. Pavlova S. G. Sagalaev P. P. Tishchenko N. D. Khodorenko E. M. Shkirnikova M. G. Shvetsova 《Geochemistry International》2018,56(2):171-181
During Cruise 62nd of the R/V “Professor Gagarinsky” in September, 2014, the carbonate system of sediments and contents of nutrients and organic carbon in pore water were studied in two geochemical stations located in hypoxia areas in the Peter the Great Bay. It was established that the concentrations of silica, phosphorus, and ammonium increase by 5, 10, and 20 times, respectively, with sediment depth to 70–80 cm. The alkalinity, dissolved inorganic carbon, and the partial pressure of carbon dioxide significantly increase with depth, while рН value and organic matter (ОM) decrease. Changes in the chemical composition of pore water with sediment depth (0–80 cm) are caused by anaerobic microbial degradation of OM, concentration of which in the top sediment layer is 2–3%. The degradation products of OM in the bottom waters of bay and pore waters of bottom sediments indicate that its main sources are diatoms. During hypoxia, the oxygen demand rate by sediment surface near Furugelm Island is estimated to be 5 mmol/(m2 day). A combination of such factors as downwelling circulation, the absence of photosynthetically active radiation, and the high oxygen demand rate at the water/sediment interface provides hypoxia formation in the depressions of the Peter the Great Bay bottom topography. 相似文献
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