scholarly journals The Vasyugan Bog North-Eastern Part Hydro/chemical Regime Specific Features between the Bakchar and Iksa Rivers (Western Siberia)

2018 ◽  
Author(s):  
Keyword(s):  
Chemical Composition ◽  
Vegetation Period ◽  
Water Composition ◽  
North Eastern ◽  
Bog Waters ◽  
Bog Water ◽  
Ph Increase ◽  
Seasonal Indices ◽  
Composition Changes ◽  
North Eastern Part

Analysis of the hydro/chemical regime and spatial regularities of the water composition changes in the Vasyugan Bog North-Eastern part between the Bakchar and Iksa rivers is presented. It has been noted that the chemical composition transformation with water class, group and type during the year is a special feature of the high bog hydro/chemical regime. Within the bog limits three clusters have been identified by bog waters chemical composition characteristics on the basis of the cluster analysis. Reliable differences between the tree clusters have been determined by the mineralization amount, Са2+, Mg2+, Feобщ, NH4 +, NO3 - ions, humic and fulvene acids, Сорг and СО2 content. Analysis of the seasonal indices has demonstrated that during the vegetation period two significant maximal peaks of the bog water seasonal wave of chemical composition occur, namely in March and September. It has been noted that that the near-ground air temperature sum increase more than 10 ºС is accompanied by the pH increase in the high bog water, increase of СО2, ammonia, sulphate, iron ions, and organic matter (humic and fulvene acids, Сорг).

scholarly journals MONITORING OF ATMOSPHERIC AND SOIL WATER COMPOSITION IN FOREST ECOSYSTEMS: MILESTONES AND OUTLOOK

2021 ◽  
Vol 1 (4) ◽  
pp. 1-25
Author(s):  
V.V. Ershov ◽  
Keyword(s):  
Chemical Composition ◽  
Species Composition ◽  
Forest Ecosystems ◽  
Atmospheric Fallout ◽  
Water Composition ◽  
Long Term Trends ◽  
Industrial Regions ◽  
Composition Changes ◽  
Lysimetric Waters

The article provides an overview of Russian and foreign studies on assessment of the composition of atmospheric fallout and soil waters in forest ecosystems. The conclusion was made that little attention is given to the transformation of precipitation chemical composition by forest ecosystems, taking into account the influence of the species composition of the stand and the mosaic structure of the biogeocenosis (areas below the crowns, between the crowns, and open sites). European studies usually look at long-term development of the composition of atmospheric fallout and lysimetric waters, detecting long-term trends in composition changes of atmospheric and soil waters and identifying the factors driving these changes. In Russia, no such long-term (lasting for more than 10 years) continuous observations on the effect of man-made pollution on the composition and properties of atmospheric and soil waters were carried out. This task is very relevant for Russia and, especially, for its industrial regions.

scholarly journals ARTIFICIAL HYDROGEOLOGICAL WINDOWS AS A SOURCE OF BUCHAK-KANIV AQUIFER'S POLLUTION IN THE NORTH-EAST OF UKRAINE

2020 ◽  
pp. 110-114
Author(s):  
D. Chomko ◽  
F. Chomko ◽  
N. Cherkashyna
Keyword(s):  
Factor Analysis ◽  
Chemical Composition ◽  
Influential Factors ◽  
Anthropogenic Contamination ◽  
North East ◽  
The North ◽  
Groundwater Aquifer ◽  
North Eastern ◽  
Oil Gas ◽  
North Eastern Part

A new method for determining the location of artificial hydrogeological windows in the roof and base of the aquifer has been proposed. As an example, the Buchak-Kaniv aquifer is given. This aquifer is widespread in the north-eastern part of Ukraine and is the main source of water supply for the region. In our opinion, pollution of the Buchak-Kaniv aquifer can occur primarily through artificial hydrogeological windows in its roof and bottom. In order to determine the location of artificial hydrogeological windows, factor analysis of the chemical composition of groundwater aquifer is used. The analysis was first carried out in places where it is precisely known about anthropogenic contamination of the aquifer with oil products and associated waters through artificial hydrogeological windows (for example, oil or other wells). As a result, a number of influential factors weighing more than 10% were identified. Further, in other areas factor analysis is also carried out using the same set of components of the chemical composition of groundwater. The coincidence of influencing factors indicates the theoretical possibility of an artificial hydrogeological window in a given area. In addition, various options for the distribution of pollutants over the horizon area are considered. The identification of these windows is important for identifying sources of aquifer pollution. Especially attractive will be the use of this method in areas where old (working and closed) oil, gas and oil-gas condensate fields are located.

An anorthite-epidote-garnet-hornfels from Namaqualand, South Africa

1941 ◽  
Vol 26 (175) ◽  
pp. 134-139
Author(s):  
C. B. Coetzee
Keyword(s):  
South Africa ◽  
Chemical Composition ◽  
Host Rock ◽  
Analytical Data ◽  
Present Communication ◽  
Northern Boundary ◽  
The North ◽  
North Eastern ◽  
Geological Map ◽  
North Eastern Part

The present communication deals with a calc-silicate hornfels of uncommon mineralogical and chemical composition. It may be tentatively referred to the deep-seated metamorphism of a marl, and on account of the shortage of analytical data pertaining to metamorphosed sediments of the calcareo-argillaceous type, a detailed investigation of a variety of this group seems justified.Intercalated bands of anorthite-epidote-garnet-hornfels bordered bilaterally by pyroxene-bearing gneisses occur on the farms Zandfontein, Pella, and Klein Pella in the north-eastern part of the division of Namaqualand, South Africa (cf. geological map), On Klein Pella small exposures also extend intermittingly for approximately 1·5 miles due WNW.-ESE. of the amphibolite koppie situated on the northern boundary of the farm area. The bands exhibit a gentle pinch and swell structure with maximum widths of 15 to 41 inches, and the contact with the host rock is commonly marked by an epidotic fringe ¾ inch in thickness. In some cases the anorthite-epidote-garnet-rock is penetrated by parallel lenticles of pure quartz which may attain maximum breadths of 0·8 inch.

The influence of submesoscale eddies on hydrochemical parameters and structural and functional characteristics of phytoplankton in the north-eastern part of the Black Sea

2019 ◽  
pp. 24-40
Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  
Keyword(s):  
Anticyclonic Eddy ◽  
The Black Sea ◽  
Hydrochemical Parameters ◽  
North East ◽  
The North ◽  
Seasonal Thermocline ◽  
North Eastern ◽  
Quantitative Indicators ◽  
The City ◽  
North Eastern Part

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

On Drummondia sinensis var. ussuriensis (Drummondiaceae, Bryophyta)

2012 ◽  
Vol 46 ◽  
pp. 235-244 ◽  
Author(s):  
O. M. Afonina ◽  
V. Ya. Cherdantseva
Keyword(s):  
Far East ◽  
Biosphere Reserve ◽  
Southern Siberia ◽  
The Far East ◽  
North Eastern ◽  
The World ◽  
World Distribution ◽  
North Eastern Part ◽  
State Nature

Drummondia sinensis Mull. Hal. var. ussuriensis (Broth.) Vitt has been found in Sokhondinskiy State Nature Biosphere Reserve (Zabaikalsky Territory, Southern Siberia). Earlier it was known in Russia from the southern part of the Far East as well as in north-eastern part of China and North of Mongolia. The type variety of Drummondia sinensis occurs in eastern part of China, Japan and India. Description and illustration of D. sinensis var. ussuriensis based on the material collected in Russia are given, comparison with close taxa is provided, and the world distribution is dicussed.

Ketilidian structure and the rapakivi suite between Lindenow Fjord and Kap Farvel, South-East Greenland

2000 ◽  
pp. 50-59
Author(s):  
Brian Chadwick ◽  
Adam A. Garde ◽  
John Grocott ◽  
Ken J.W. McCaffrey ◽  
Mike A. Hamilton
Keyword(s):  
Coastal Region ◽  
Field Work ◽  
Natural Environment Research Council ◽  
East Greenland ◽  
The North ◽  
Tectonic Processes ◽  
Field Investigations ◽  
North Eastern ◽  
Bad Weather ◽  
North Eastern Part

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Chadwick, B., Garde, A. A., Grocott, J., McCaffrey, K. J., & Hamilton, M. A. (2000). Ketilidian structure and the rapakivi suite between Lindenow Fjord and Kap Farvel, South-East Greenland. Geology of Greenland Survey Bulletin, 186, 50-59. https://doi.org/10.34194/ggub.v186.5215 _______________ The southern tip of Greenland is underlain by the Palaeoproterozoic Ketilidian orogen (e.g. Chadwick & Garde 1996; Garde et al. 1998a). Field investigations in the summer of 1999 were focused on the structure of migmatites (metatexites) and garnetiferous granites (diatexites) of the Pelite Zone in the coastal region of South-East Greenland between Lindenow Fjord and Kap Farvel (Figs 1, 2). Here, we first address the tectonic evolution in the Pelite Zone in that region and its correlation with that in the Psammite Zone further north. Then, the structure and intrusive relationships of the rapakivi suite in the Pelite Zone are discussed, including particular reference to the interpretation of the controversial outcrop on Qernertoq (Figs 2, 8). Studies of the structure of the north-eastern part of the Julianehåb batholith around Qulleq were continued briefly from 1998 but are not addressed here (Fig. 1; Garde et al. 1999). The field study was keyed to an interpretation of the Ketilidian orogen as a whole, including controls of rates of thermal and tectonic processes in convergent settings. Earlier Survey field work (project SUPRASYD, 1992–1996) had as its principal target an evaluation of the economic potential of the orogen (Nielsen et al. 1993). Ensuing plate-tectonic studies were mainly funded in 1997–1998 by Danish research foundations and in 1999 by the Natural Environment Research Council, UK. The five-week programme in 1999 was seriously disrupted by bad weather, common in this part of Greenland, and our objectives were only just achieved. Telestation Prins Christian Sund was the base for our operations (Fig. 2), which were flown with a small helicopter (Hughes MD-500).

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