Geochemical and radiation conditions in coastal landscapes of the Kara Sea Gulf (Novaya Zemlya Archipelago)     

N. P. Laverov  V. I. Velichkin  A. Yu. Miroshnikov  V. V. Krupskaya  En. E. Asadulin  I. N. Semenkov  A. A. Usacheva  S. V. Zakusin  E. V. Terskaya 《Doklady Earth Sciences》2016,467(1):320-324

This work considers terrestrial coastal landscapes of Abrosimov and Stepovoi gulfs and Yuzhnii (Southern) Island in the Novaya Zemlya Archipelago in the Kara Sea. These areas are dominated by horizons of slightly acidic leptosols and lithic leptosols of 10 cm thick (Stepovoi Gulf) and those of weak skeleton acidic lithic leptosols of 10–15 cm thick (Abrosimov Gulf) covered by moss–shrub assemblages. Kaolinite is formed in a rhizosphere fine earth layer; illite is formed along the leptosol sequence. The studied coastal landscapes are characterized by low accumulation potential of chemical elements, including radionuclides, at higher contents of them. Elements such as Fe and Ti are dispersed in sols, whereas P, S, Cl, Cu, Pb, and Zn are accumulated in soils in minor amounts. Plants accumulate S, P, Cl, Sr, Zn, and ¹³⁷Cs in minor amounts as well. Elements such as Ti, Mn, Fe, Cr, V, Co, Ni, Cu, Rb, Zr, Ba, Th, Y, Nb, Pb, and As are attributed to the group of weak biological adsorption. The specific ¹³⁷Cs activity (Bq kg^–1) amounts to 10–150 in plants, 10–300 in moor leptosol horizons, and 1–40 in mull horizons.  相似文献   

Relief of the Kara Sea Bottom and Sediment Sorption Properties as Pollution Accumulation Factors     

Miroshnikov  A. Yu.  Badukov  D. D.  Flint  M. V.  Repkina  T. Yu.  Asadulin  En. E.  Sharapov  A. M.  Komarov  Vl. B.  Usacheva  A. A. 《Oceanology》2021,61(5):714-726

  相似文献   

Mineral composition of soils and bottom sediments in bays of Novaya Zemlya     

Krupskaya  V. V.  Miroshnikov  A. Yu.  Dorzhieva  O. V.  Zakusin  S. V.  Semenkov  I. N.  Usacheva  A. A. 《Oceanology》2017,57(1):215-221

We have analyzed the specific features of the mineralogical composition of bottom sediments of Blagopoluchiya, Tsivol’ki, and Abrosimov bays and soils on Cape Zhelaniya and the coasts of Abrosimov and Stepovoi bays. The data were obtained during two scientific expeditions of the R/V Professor Shtokman in 2014 (cruise 128) and R/V Akademik Mstislav Keldysh in 2015 (cruise 63). These investigations revealed patterns in the transportation of terrigenous material in the coastal zone of the bays: a decrease in the share of nonclay minerals and an increase in that of clay minerals with distance from shore. The increase in kaolinite and smectite content in soil horizons is related to biochemical weathering, while illite is mainly formed as a result of physical weathering.

  相似文献   

Changes in the Radiation State of Bottom Sediments in Yenisei Gulf     

Miroshnikov  A. Yu.  Flint  M. V.  Dubinina  E. O.  Asadulin  En. E.  Shchuka  S. A.  Usacheva  A. A. 《Doklady Earth Sciences》2018,483(2):1582-1586

Doklady Earth Sciences - This paper reports on the results of radiation monitoring of bottom sediments in Yenisei Gulf for the period from 1995 to 2016. Clear positive trends in changing the...  相似文献