排序方式： 共有6条查询结果，搜索用时 689 毫秒
1
1.
Dobretsov N. L. Zhmodik S. M. Lazareva E. V. Bryanskaya A. V. Ponomarchuk V. A. Saryg-ool B. Yu. Kirichenko I. S. Tolstov A. V. Karmanov N. S. 《Doklady Earth Sciences》2021,496(2):135-138
Doklady Earth Sciences - Data indicating the important role of microorganisms in the redistribution of REEs in the weathering crust and the decisive role in the concentration of REEs during the... 相似文献
2.
A. V. Tatarinov E. V. Danilova L. I. Yalovik D. D. Barkhutova Z. B. Namsaraev A. V. Bryanskaya A. M. Plyusnin 《Geochemistry International》2010,48(2):152-162
Hoito Gol hot spring of weakly mineralized warm (36–29°C) neutral and partly alkaline nitrogen-carbon dioxide waters belongs
to the hydrogeological structure of the actively water-flooded fault marked by the Sentsy River at the southwestern termination
of the Baikal rift system. The spatiotemporal evolution of the major parameters of the underground aqueous ecosystem of this
spring is controlled mainly by geological and geodynamic factors, whereas the parameters of the surface system are determined
mostly by bacterial factors. Variations in these factors are correlated with changes in the composition, structure, and spatial
distribution of the bacterial communities. 相似文献
3.
4.
Interaction between water flow and ridge bedforms has been studied. The results of experimental studies of velocity distribution over ridge bedforms in a hydraulic laboratory flume are given. The distribution of pressure along the contour of a rigid model ridge, determined in an aerodynamic canal, is also given. 相似文献
5.
The role of fine sediments of technogenic origin in channel process is analyzed. The specific features of sedimentation of
particles with different density and shape and the issues of flocculation and consolidation of sediments in the bottom part
of flow are discussed. Experimental data on the adhesion of particles are given and a relationship for its assessment is proposed.
The class of sediments for which the adhesion determines the critical erosion velocity is determined. The processes of river
water self-purification and precipitation of fine sediments were compared to show that sedimentation processes play an important
role in river water self-purification. 相似文献
6.
E. V. Lazareva S. M. Zhmodik M. S. Melgunov I. V. Petrova A. V. Bryanskaya 《Doklady Earth Sciences》2011,439(2):1131-1137
The features of present deposits that form in the vicinity of hot springs can provide clues to the parameters of paleowaters
in places of past hydrothermal activity marked by remnant carbonate and/or siliceous sinter. We investigated a large carbonate
body at the Garga hot spring developing in the Baikal zone of nitric hydrotherms in the Barguzin Rift Zone valley. The main
focus was on the structure of the carbonate mound, as well as on the partitioning of radioactive elements between the cyanobacterial
mat and the inorganic component of the body (the issue that has never been explored before). The cyanobacterial community
of the Garga spring is an active biosorbent of 226Ra, 228Ra, 210Pb. The radionuclides accumulated by biosorption become preserved in minerals that form within the bacterial community. The
reported data of mineral formation in the cyanobacterial mat along with the mineralogy and structure of the carbonate mound
of the Garga spring have implications for the complex history of the Garga body. It has been produced jointly by precipitation
from the venting thermal water (opal-calcite-fluorite-barite-celestine assemblage) and microbial metabolic activity (coarse
calcite and thin black encrustation rich in Mn minerals). 相似文献
1