Expeditionary research in the western and eastern basins of the Aral Sea (October 2005)     

P. O. Zav’yalov  A. G. Arashkevich  A. B. Grabovskii  S. N. Dikarev  G. Dzhalilov  Yu. V. Evdokimov  T. V. Kudyshkin  A. K. Kurbaniyazov  S. K. Kurbaniyazov  A. T. Matchanov  A. A. Ni  F. V. Sapozhnikov  I. G. Tomashevskaya 《Oceanology》2006,46(6):891-895

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Hydrochemical and Hydrological Conditions in the Ural River Lower Reaches and in the Caspian Sea Mouth Region at the Beginning of the Spring Flood     

P. N. Makkaveev  V. V. Gordeev  P. O. Zavialov  A. K. Kurbaniyazov 《Russian Meteorology and Hydrology》2018,43(10):706-712

The study presents data of hydrophysical observations and the results of studying the chemical composition of water and suspended particulate matter obtained in April of 2016 and 2017 during the complex studies in the Ural River lower reaches and in the Caspian Sea region adjoining the river mouth. It is revealed that the chemical composition of river runoff varied greatly not only from year to year but also within the period of field studies that may be explained by the water inflow from different parts of the river catchment during the spring flood.  相似文献   

Expeditionary studies in the western basin of the Aral Sea in September 2006     

P. O. Zav’yalov  E. E. Andrulionis  E. G. Arashkevich  A. B. Grabovskii  S. N. Dikarev  T. V. Kudyshkin  A. K. Kurbaniyazov  A. A. Ni  F. V. Sapozhnikov 《Oceanology》2008,48(4):602-608

In September 2006, field studies were performed in the course of the seventh regular expedition of the Shirshov Institute of Oceanology of the Russian Academy of Sciences within the frameworks of the program for multidisciplinary studies and monitoring of the condition of the hydrophysical, hydrochemical, and hydrobiological systems of the Aral Sea under the anthropogenic crisis. This program has been implemented together with a series of scientific institutions of Uzbekistan and Kazakhstan starting in 2002. The results of the previous expeditions have been presented earlier in a series of publications (for example, [3–6, 12, 13]).  相似文献   

Features of Thermohaline Structure and Circulation in Lake Issyk-Kul     

Zavialov  P. O.  Izhitskiy  A. S.  Kirillin  G. B.  Rezvov  V. Yu.  Alymkulov  S. A.  Zhumaliev  K. M.  Kurbaniyazov  A. K. 《Oceanology》2020,60(3):297-307

Oceanology - Field measurements carried out over 4 years made it possible to establish previously unknown features of the thermohaline fields and circulation of Lake Issyk-Kul. The most detailed...  相似文献   

Geochemistry of О, Н, C,S, and Sr isotopes in the water and sediments of the Aral basin     

B. G. Pokrovsky  P. O. Zaviyalov  M. I. Bujakaite  A. S. Izhitskiy  O. L. Petrov  A. K. Kurbaniyazov  V. M. Shimanovich 《Geochemistry International》2017,55(11):1033-1045

The paper presents original authors' data on the O, H, C, S, and Sr isotopic composition of water and sediments from the basins into which the Aral Sea split after its catastrophic shoaling: Chernyshev Bay (CB), the basin of the Great Aral in the north, Lake Tshchebas (LT), and Minor Sea (MS). The data indicate that the δ¹⁸О, δD, δ¹³C, and δ³⁴S of the water correlate with the mineralization (S) of the basins (as of 2014): for CB, S = 135.6‰, δ¹⁸О = 4.8 ± 0.1‰, δD = 5 ± 2‰, δ¹³C (dissolved inorganic carbon, DIC) = 3.5 ± 0.1‰, δ³⁴S = 14.5‰; for LT, S = 83.8‰, δ¹⁸О = 2.0 ± 0.1‰, δD =–13.5 ± 1.5‰, δ¹³C = 2.0 ± 0.1‰, δ³⁴S = 14.2‰; and for MS, S = 9.2‰, δ¹⁸О =–2.0 ± 0.1‰, δD =–29 ± 1‰, δ¹³C =–0.5 ± 0.5‰, δ³⁴S = 13.1‰. The oxygen and hydrogen isotopic composition of the groundwaters are similar to those in MS and principally different from the artesian waters fed by atmospheric precipitation. The mineralization, δ¹³С, and δ³⁴S of the groundwaters broadly vary, reflecting interaction with the host rocks. The average δ¹³С values of the shell and detrital carbonates sampled at the modern dried off zones of the basins are similar: 0.8 ± 0.8‰ for CB, 0.8 ± 1.4‰ for LT, and –0.4 ± 0.3‰ for MS. The oxygen isotopic composition of the carbonates varies much more broadly, and the average values are as follows: 34.2 ± 0.2‰ for CB, 32.0 ± 2.2‰ for LT, and 28.2 ± 0.9‰ for MS. These values correlate with the δ¹⁸O of the water of the corresponding basins. The carbonate cement of the Late Eocene sandstone of the Chengan Formation, which makes up the wave-cut terrace at CB, has anomalously low δ¹³С up to –38.5‰, suggesting origin near a submarine methane seep. The δ³⁴S of the mirabilite and gypsum (11.0 to 16.6‰) from the bottom sediments and young dried off zone also decrease from CB to MS in response to increasing content of sulfates brought by the Syr-Darya River (δ³⁴S = 9.1 to 9.9‰) and weakening sulfate reduction. The ⁸⁷Sr/⁸⁶Sr ratio in the water and carbonates of the Aral basins do not differ, within the analytical error, and is 0.70914 ± 0.00003 on average. This value indicate that the dominant Sr source of the Aral Sea is Mesozoic–Cenozoic carbonate rocks. The Rb–Sr systems of the silicate component of the bottom silt (which is likely dominated by eolian sediments) of MS and LT plot on the Т = 160 ± 5 Ma, I₀ = 0.7091 ± 0.0001, pseudochron. The Rb–Sr systems of CB are less ordered, and the silt is likely a mixture of eolian and alluvial sediments.  相似文献   

Field Measurements of Sea Currents on the Mangistau Shelf of the Caspian Sea     

Zavialov  P. O.  Kurbaniyazov  A. K.  Kayupov  A. A.  Koibakova  S. E.  Kremenetsky  V. V.  Sapozhnikov  F. V.  Syrlybekkyzy  S. 《Oceanology》2022,62(4):458-463

Oceanology - The pilot Kazakhstan–Russia project provided the first systematic data in a long time on coastal currents in one of the least studied areas of the Caspian Sea, namely the...  相似文献