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Krestin B.M.,All Russia Research Institute of Hydrogeology and Engineering Geology | Mal'neva I.V.,All Russia Research Institute of Hydrogeology and Engineering Geology
Water Resources | Year: 2016

Data on landslide and mudflow manifestations in the Greater Sochi and Krasnaya Polyana areas in recent years are analyzed. Changes in their activity under natural and technogenic effects during the preparation to the 2014 Winter Olympics are taken into account. The specific features of the intensification of these processes in 2012–2013 are identified. © 2016, Pleiades Publishing, Ltd.


Shevnin V.A.,Moscow State University | Ryjov A.A.,All Russia Research Institute of Hydrogeology and Engineering Geology | Kvon D.A.,MSU
Near Surface Geoscience 2015 - 21st European Meeting of Environmental and Engineering Geophysics | Year: 2015

In different countries after 1967 were discovered local self potential anomalies above 1200 mV that didn't related with redox processes in rocks. Such anomalies were found in mountains, they had inverse correlation with relief, and underground water had low mineralization and high electrical resistivity. Possible cause of these anomalies can be electrokinetic or streaming potentials due to water filtration. Calculation of electric field intensity on Helmholtz formula shows that these anomalies could appear at water resistivity above 100 Ohmm at filtration in loose sand-gravel- soil. © (2015) by the European Association of Geoscientists & Engineers (EAGE).


Drozdov D.S.,Russian Academy of Sciences | Ukraintseva N.G.,Russian Academy of Sciences | Tsarev A.M.,Russian Academy of Sciences | Chekrygina S.N.,All Russia Research Institute of Hydrogeology and Engineering Geology
Earth's Cryosphere | Year: 2010

The results of the long-term regime observations of the permafrost temperature and state of geosystem on the Urengoy oil-gas-field territory are presented. The observations were conducted at key-sites equipped in 1974 in the landscape sub-zones of the southern forest-tundra and southern tundra. The positive temperature trend during the period of 1974-2008 has been generally confirmed everywhere; however the temperature increase was uneven both in time and in space. The cycles of warming-cooling have been revealed. In southern foresttundra, the descending of the permafrost table has been widely observed. The permafrost dynamic maps of the research territory have been created using the geo-information technologies. The 30-40 km advance of the boundary of the scattered trees to the north is one of the obvious landscape indicators of climate warming.


Abukova L.A.,Russian Academy of Sciences | Yusupova I.F.,All Russia Research Institute of Hydrogeology and Engineering Geology | Abramova O.P.,Russian Academy of Sciences
Solid Fuel Chemistry | Year: 2014

The role of an important bulk component of high-carbon rocks (in particular, oil shale) - their concentrated organic matter (COM) - in the formation of epigenetic permeability is considered. Baltic kukersite shale (degree of transformation - early catagenesis) is used as an example. It is emphasized that the fluid permeability of this shale layer is manifested locally in tectonic disturbances, buried erosional valleys, and linear structural-deformation zones. The quality of shale in these zones deteriorates (the calorific value, the yield of tar, etc., decrease), and it is partially decarbonized (and decarbonated) and deformed; the shale acquires increased permeability, and its bed thickness decreases and marl varieties become more terrigenous. It is asserted that these phenomena were caused by the partial (and sometimes almost complete) loss of kukersite in the test sections of COM. The decrease of the organic matter caused the liberation of void space and then deformations, the disturbance of the integrity of layers, an increase in the permeability, and the loss of the status of fuels by the initial shale. The relationship of the degradation of the COM of shale with sulfate reduction processes in the underground hydrosphere at the early catagenic stage of the existence of a shale layer is substantiated. © 2014 Allerton Press, Inc.


Malneva I.V.,All Russia Research Institute of Hydrogeology and Engineering Geology | Kononova N.K.,Russian Academy of Sciences
International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings | Year: 2011

Assessment of a mudflow hazard in the current period of unstable climate and possible extreme situations is especially important for the Caucasian Black Sea coast. Here mudflows constantly threaten to economic and tourist's objects and happen due to the mass construction of different structures, including their probable appearance during preparation of XXII Olympic Winter Games of 2014 in Sochi. The hazard assessment of mudflows is made through analyzing their activity and the degree to which they affect the territory. Data on the mudflow activity in the past and present time are extrapolated for the period up to 2015 basing on analysis of the basic changing factors of their formation: meteorological and anthropogenic ones in the interaction with geological conditions. High mudflows activity is expected in the nearest years both on the territory where they were known earlier and also in the areas under intensive development. The highest hazard is possible in 2011-2012. © 2011 Casa Editrice Università La Sapienza.


Shevnin V.A.,Moscow State University | Ryjov A.A.,All Russia Research Institute of Hydrogeology and Engineering Geology | Kvon D.A.,Moscow State University
12th Conference and Exhibition Engineering Geophysics 2016 | Year: 2016

In induced polarization method two parameters are measured: resistivity and chargeability. We used frequency-domain IP measurements as IP profiling and spectral characteristics (ηa from frequency). Chargeability was determined from phase difference, from PFE and LFE. Additionally we calculated normalized chargeability Mn. At IP profiling ηa values determined from Δφ, PFE and LFE are very similar, while at spectral characteristics these are different in frequency. Mn parameter is closely correlated with superficial conductivity, proportional to clay content and inversely proportional to hydraulic conductivity. Some examples of field data are presented and discussed.


Shevnin V.A.,Moscow State University | Kvon D.A.,Moscow State University | Ryjov A.A.,All Russia Research Institute of Hydrogeology and Engineering Geology
Geophysics 2015 - 11th EAGE International Scientific and Practical Conference and Exhibition on Engineering and Mining Geophysics | Year: 2015

We collected and analyzed information about anomalies of SP potential with amplitude above 1200 mV found at our planet that had no relation with red-ox processes on electronic conductors. It is possible that these anomalies have electrokinetic origin that was demonstrated by modeling with Helmgoltz equation and an existence of specific physical conditions near these anomalous places.


Shevnin V.A.,Moscow State University | Ryzhov A.,All Russia Research Institute of Hydrogeology and Engineering Geology
Geophysics 2015 - 11th EAGE International Scientific and Practical Conference and Exhibition on Engineering and Mining Geophysics | Year: 2015

A possible origin of increased polarizability of fluvioglacial sand in aeration zone is considered, and we found that it is resulred in some depth interval where weighting humidity is equal 2-5% at transition from very dry sand near the surface to full saturation of depth.


Yusupova I.F.,All Russia Research Institute of Hydrogeology and Engineering Geology
Solid Fuel Chemistry | Year: 2011

Consequences of heat generation caused by exothermic changes in organic matter in the subsurface have been considered. It has been shown that once existed deposits containing solid organic matter and then self-heated, spontaneously ignited, and burnt under subsurface conditions can be traced by not only thermally altered rocks (including ore mineralization, etc.), but also landforms (positive and negative) and increased levels of both dislocations and geofiltration heterogeneity. Elevated temperatures (sometimes up to 1000-1200°C), causing transformation of both organic and mineral matter, create preconditions for deformation of host rocks: void emptying due to loss of a large mass (more precisely, volume) of matter (mainly organic), explosive activity of generated fluids, and the corrosive nature of some of them. As a result, the bed integrity is disturbed, stockwork fracturing (and permeability) develops, and rocks are subjected to impact of corrosive solutions. The role of solid organic matter in the disintegration of rocks has been analyzed. It has been pointed out that not only high temperatures can cause deformation alteration of rocks, but also dislocating nature of the environment can cause heat generation. In any case, there will be spatial alignment of both thermally altered and dislocated rocks. © Allerton Press, Inc., 2011.


Sokolovskii L.G.,All Russia Research Institute of Hydrogeology and Engineering Geology | Polyakov V.A.,All Russia Research Institute of Hydrogeology and Engineering Geology | Markidanova H.S.,All Russia Research Institute of Hydrogeology and Engineering Geology
Water Resources | Year: 2012

Studying results of the groundwater isotope composition in the Neogene-Quaternary and Mesozoic sediments of the Azov-Kuban and Eastern Pre-Caucasian artesian basins have shown in the Pliocene sediments a rather wide distribution of "relict" groundwater, formed because of melting of the Late Pleistocene Caucasian glaciers, as well as of groundwater formed due to its mixing with the meteogenic waters of the subsequent Holocene infiltration cycles. Also, the areas are revealed in the Lower-Miocene sediments where meteogenic waters are mixed with sedimentation waters, while in the Mesozoic formations-the areas where into the sedimentation waters wedge-shaped meteogenic waters of Pleistocene and Holocene infiltration periods are intruded. © 2012 Pleiades Publishing, Ltd.

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