scholarly journals Transformation of the relief of territories of development of gas mining deposits of the Taza peninsula

2019 ◽  
Vol 10 (1) ◽  
pp. 16-28
Author(s):  
Petr Vladimirovich Bolshanik ◽  
Timur Ilfatovich Mukhamedyanov
Keyword(s):  
Vegetation Cover ◽  
Residential Facilities ◽  
Soil Freezing ◽  
Anthropogenic Factor ◽  
Exploration And Production ◽  
Soil Temperature Regime ◽  
Landslide Processes ◽  
Lithological Composition ◽  
Cover Thickness ◽  
Cryogenic Processes

The article discusses the natural conditions of the territory of the Taz peninsula in order to highlight the main natural factors in the transformation of the relief. Special attention is paid to the characteristics of permafrost and cryogenic processes and phenomena observed in this area. The characteristic of geological rocks that make up this territory is given. The influence of the hydrometeorological conditions of the Taz Peninsula is estimated. The main factors of the natural environment that determine the formation of a layer of seasonal melting are: the lithological composition and properties of soils, vegetation cover, topography, surface drainage. The main factor determining the heterogeneity of the soil temperature regime is the spatial unevenness of the snow cover thickness in this area depending on the microrelief of the region and vegetation. The influence of the anthropogenic factor on the transformation of the relief is substantiated. Three categories of violations were identified: areal (occurs during the development of fields and the construction of industrial transport facilities and other types of infrastructure); linear (when laying transport communications); and linear area (in the construction of industrial and residential facilities and a network of transport communications). The most common geomorphological processes on the territory of the Taz peninsula, activating the anthropogenic factor, are soil freezing and thermokarst caused by cryogenic processes, landslide processes and erosion, and more rarely deflation. The development of mineral deposits on the territory of the Taz Peninsula is accompanied by the construction of infrastructure for exploration and production, transportation facilities (pipelines, roads, power lines), and industrial and residential facilities. All these types of anthropogenic impact create pressure on the environment and its transformation, especially in conditions of weak stability of geosystems. Geological cryological zoning of the territory for the development of gas pipeline routes has been proposed. Priority activities in developed areas should include: recultivation of disturbed areas - restoration of damaged soil and vegetation cover, natural and geological environment, engineering and geocryological zoning, designed to develop plans for the development of the territory.

scholarly journals The Specificities of the Temperature Regime of Seasonaly Freezing Soils of Tundra Landscape of European North East of Russia

2017 ◽  
pp. 3-21 ◽  
Author(s):  
D. A. Kaverin ◽  
A. V. Pastukhov
Keyword(s):  
Temperature Regime ◽  
Snow Accumulation ◽  
Soil Freezing ◽  
North East ◽  
European North ◽  
Soil Temperature Regime ◽  
Taiga Soils ◽  
The Impact

The specificities of temperature regime of automorphic clayey soils forming under the suffruticous and shrub vegetation within the zone of tundra and forest tundra in the European North-East were studied. As the objects of investigation we chose the organic cryometamorphic soils and cryometamorphic gleezems; in the both soil types the CRM cryometamorphic horizon is developed. The soils are formed in conditions of long-termed seasonal freezing at the absence (deep occurrence) of the permafrost rocks. The dynamics near the zero temperatures (zero curtains) is characterized. The hypothesis, concerning the role of zero curtains in the sustaining of the specific angular-grainy structure within the mass of cryometamorphic horizons is formulated. The mass of cryometamorphic horizons and the depth of present-day zero curtains, which observed at the long-term seasonal soil freezing, correlate to each other. The impact of suffruticous and shrub vegetation on the specificities of winter and summer soil temperature regime is determined. We discovered that the main differences between the soils developing under suffruticous and shrub vegetation tundras are stipulated by the different intensity of the snow accumulation within these areas. The soils that are developed under the shrub vegetation are warmer than soils developed under the suffruticous tundra, where permafrost may occur at the depth of 2-3 cm. In general, seasonaly freezing tundra soils are located in the middle of the range of the automorphic clay loamy soils in the tundra-taiga ecotone of European North-East of Russia, and occupy the niche between permafrost tundra and non-permafrost north taiga soils.

Lithological-geochemical characteristics of natural outcrops of the Domani sediments in the areas of the Pre-Urals regional trough of the Volga-Ural oil and gas basin

2019 ◽  
pp. 28-33
Author(s):  
K. A. Radchenko ◽  
N. I. Korobova ◽  
M. A. Bolshakova ◽  
A. V. Stoupakova ◽  
A. P. Zavyalova ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Geochemical Characteristics ◽  
Carbon Formation ◽  
High Carbon ◽  
Oil Reserves ◽  
Siliceous Rocks ◽  
Exploration And Production ◽  
Domanik Formation ◽  
Lithological Composition ◽  
Gas Potential

Replenishment of oil reserves requires searching, exploration and production of new unconventional objects. Among these objects is Domanik formation, which is widespread in the Volga-Ural basin. The Domanic high-carbon formation is presented by thin-layered carbonate-siliceous rocks with a high content of organic matter, capable of both producing hydrocarbons with its own oil and gas potential, and concentraring them in reservoirs [Stupakova et al., 2017]. Study of lithological composition of rocks help to obtain information about the nature of hydrocarbon accumulations and understand possibilities of estracting hydrocarbon of them. The lithological and geochemical characteristics of rocks are an integral part of the study such types of deposits.

scholarly journals Thermal signal propagation in soils in Romania: conductive and non-conductive processes

2007 ◽  
Vol 3 (4) ◽  
pp. 637-645 ◽  
Author(s):  
C. Demetrescu ◽  
D. Nitoiu ◽  
C. Boroneant ◽  
A. Marica ◽  
B. Lucaschi
Keyword(s):  
Heat Transfer ◽  
Air Temperature ◽  
Signal Propagation ◽  
Soil Freezing ◽  
Flux Balance ◽  
Thermal Signal ◽  
Soil Temperatures ◽  
Rain Fall ◽  
Cover Thickness ◽  
Air Temperature Variations

Abstract. Temperature data recorded in 2002 and 2003 at 10 stations out of the 70 available in the Romanian automatic weather stations network are presented and analyzed in terms of the heat transfer from air to underground. The air temperature at 2 m, the soil temperatures at 0, 5, 10, 20, 50 and 100 cm below the surface as well as rain fall and snow cover thickness have been monitored. The selected locations sample various climate environments in Romania. Preliminary analytical modelling shows that soil temperatures track air temperature variations at certain locations and, consequently, the heat transfer is by conduction, while at other stations processes such as soil freezing and/or solar radiation heating play an important part in the heat flux balance at the air/soil interface. However, the propagation of the annual thermal signal in the uppermost one meter of soil is mainly by conduction; the inferred thermal diffusivity for 8 stations with continuous time series at all depth levels ranges from 3 to 10×10−7 m2 s−1.

scholarly journals GEODYNAMICS

GEODYNAMICS ◽  
2021 ◽  
Vol 1(30)2021 (1(30)) ◽  
pp. 65-77
Author(s):  
Liudmyla Shtohryn ◽  
Keyword(s):  
Magnetic Fields ◽  
Regional Scale ◽  
Fault Zones ◽  
Distribution Area ◽  
Tectonic Structure ◽  
Tectonic Zone ◽  
Gravitational Fields ◽  
Landslide Processes ◽  
Lithological Composition ◽  
The Impact

Purpose. The aim of the research presented in this article is to analyze the features of the reflection of the damage to the territory of the Transcarpathian region by landslide processes based on the anomalies in the magnetic and gravitational fields, taking into account tectonic zoning. The study is an important stage in predicting the landslide processes and it is aimed at reducing their negative effects on the environment. The relevance of the research is due to the growing intensification of landslides in the Carpathian region of Ukraine. Methodology. The development of landslides in each structural-tectonic zone is associated with its tectonic structure, and therefore these processes can have different intensity, dynamics, tendencies for further development and distribution area. Lithological-facies composition and bedding conditions of rocks form the physical and mechanical properties of rocks, determining the rate and mechanism of the development of landslides. The spatial confinedness of landslide processes in the fault zones is reflected in the gravitational and magnetic fields. Results. With the help of GIS MapInfo tools, a number of landslides in each tectonic zone, anomalies in the gravitational and magnetic fields, areas affected by landslides, the distance to the fault zones were calculated. The important result of the research is to prove a direct correlation between the spatial distribution of landslides and fault zones, tectonic structure, the lithological composition of rocks, which are reflected in gravimagnetic anomalies. Scientific novelty. The peculiarities of the reflection of the tectonic structure, zones of decompression, fragmentation of rocks and lithological composition in gravimagnetic fields on a regional scale are examined, and their association with landslide processes is evaluated for the first time. Practical significance. The theoretical substantiation of the peculiarities of the behaviour of gravimagnetic fields in the zones of distribution of landslide processes makes it possible to assess the natural conditions for the formation and development of landslides in a given region. The connection between the impact of the fault zones on landslide processes by their reflection in gravimagnetic fields is established, which can be used in the future for spatial forecasting of the development of landslides in territories with related structural-tectonic conditions.

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