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Date submitted1991-07-22
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Date accepted1991-09-16
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Date published1992-12-08
Theoretical bases of electrical exploration in inductive measurement of magnetic field of stray currents
- Authors:
- V. Kh. Zakharov
The upper part of the Earth's crust in the vast majority of cases serves to some degree as a kind of "second wire" for the whole variety of electric power circuits used in human life.
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Date submitted1991-07-25
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Date accepted1991-09-12
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Date published1992-12-08
Method of construction of a family of equivalent solutions of the inverse problem of MTS in horizontally layered media
- Authors:
- K. M. Ermokhin
One of the main tasks in interpreting magnetotelluric sounding data is the determination of the normal section, which is understood as a one-dimensional distribution of resistivity over depth (horizontal-layer section).
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Date submitted1991-07-28
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Date accepted1991-09-14
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Date published1992-12-08
Studies of the seismoelectric effect of the second kind in laboratory conditions
- Authors:
- V. G. Terentyev
Two types of seismoelectric effect (SEF) are distinguished: first- and second-order effects.
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Date submitted1991-07-07
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Date accepted1991-09-04
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Date published1992-12-08
On the interpretation of audiomagnetotelluric sounding curves in ore areas
- Authors:
- K. V. Titov
Developing in recent decades in the USSR audiomagnetotelluric (AMT) method, which appeared earlier abroad, currently finds application, in particular in geological mapping of ore districts in the medium and large scale.
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Date submitted1991-07-11
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Date accepted1991-09-07
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Date published1992-12-08
Application of the charge method to study ferruginous quartzites in conditions difficult for the organization of geophysical communications
- Authors:
- A. V. Kolesnik
- G. V. Redko
- S. N. Zakharov
Conducting electrical survey by the charge method in densely populated agricultural areas is usually associated with organizational difficulties.
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Date submitted1991-07-04
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Date accepted1991-09-20
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Date published1992-12-08
Study of textural and structural features of magnetic ores in boreholes using a harmonic magnetic gradient probe
- Authors:
- D. N. Lotov
Magnetic susceptibility logging (MSL) is widely and successfully used in the exploration and mining of strongly magnetic iron ores. At the stage of exploration of magnetite deposits, and especially when calculating reserves using magnetic susceptibility logging data, it is often necessary to distinguish interlayers of slbomagnetic or non-magnetic rocks in the strongly magnetic magnetite ore.
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Date submitted1991-07-17
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Date accepted1991-09-22
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Date published1992-12-08
Effect of ion migration on the current limit of electrochemical reactions in the CSPC method
- Authors:
- O. F. Putikov
The magnitude of the limiting current of the electrochemical reaction, determined by the contact method polarization curve (CMPC), is used to quantify the parameters of the ore body (mineral concentration, mineral reserves, etc.).
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Date submitted1991-07-12
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Date accepted1991-09-17
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Date published1992-12-08
Remote assessment of metal content in ore objects by the BSPC method
- Authors:
- Yu. S. Ryss
Active excitation of electrochemical reactions on the surface of ore bodies possessing electronic conductivity, and registration of the processes in the form of polarization curves allow to establish the composition of sulfide minerals in the mineralization, its position in space, as well as the content and reserves of useful components.
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Date submitted1991-07-07
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Date accepted1991-09-21
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Date published1992-12-08
Comparison of characteristics of ore objects and CHIM anomalies
- Authors:
- I. S. Goldberg
- S. G. Alekseev
The method of partial metal extraction (PME) is based on the isolation of electromobile forms of chemical elements from soils. Based on the results of observations by the PEM method are determined by the site with anomalous concentration of EPFN chemical elements, which are judged on the presence in the area of ore objects.
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Date submitted1991-07-30
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Date accepted1991-09-24
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Date published1992-12-08
Measurement of high dissolved oxygen concentrations by polarographic logging method
- Authors:
- N. I. Bezzubov
The technique of measuring the concentration of dissolved oxygen in water by means of polarographic logging for cases when its maximum concentration is determined by equilibrium with atmospheric air has been considered in a number of works and is widely used to solve various practical problems.
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Date submitted1991-07-08
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Date accepted1991-09-25
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Date published1992-12-08
Correlation of sections of the Kola ultra-deep well based on vertical seismic profiling data
During drilling of the SG-3 Kola well, technological complications in a number of cases resulted in the necessity to sink bypass wellbores. Vertical seismic profiling (VSP) observations were carried out in the deepest of them, including in the depth interval common for different wellbores.
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Date submitted1991-07-10
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Date accepted1991-09-22
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Date published1992-12-08
Some peculiarities of wave fields in the junction zone of the southeastern part of the Baltic Shield and the Russian Plate
- Authors:
- N. I. Suvorova
- V. I. Litvinenko
The zone of juxtaposition of the southeastern part of the Baltic Shield and the Russian Plate covers the territory of southern Finland, southern Karelia and the Baltic States. To date, a significant amount of deep seismic research has been carried out here on several northeast-directed profiles.
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Date submitted1991-07-27
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Date accepted1991-09-07
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Date published1992-12-08
Application of RWM seismic survey using multiple observations in the Ore Altai Mountains
- Authors:
- A. N. Telegin
- I. M. Tikhonova
- L. I. Platonova
Seismic exploration works of the RWM conducted in the Leninogorsk and Berezovsko-Belousovsky districts of the Ore Altai in 1985-1986 was the first experience of multiple profiling in this region. The article discusses the features of the field work methodology and the graph of processing procedures as applied to the seismogeological conditions of the Leninogorsk ore field.
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Date submitted1991-07-12
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Date accepted1991-09-25
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Date published1992-12-08
On the possibility of separation of monochromatic seismic waves excited by anthropogenic sources of elastic vibrations
- Authors:
- V. A. Gorev
Recently, anthropogenic sources of elastic vibrations have been of great interest in seismic exploration and seismology. Fluctuations arising from the rotation of a hydroelectric turbine are proposed to be used for Earth imaging, for observations of environmental changes associated with geodynamic processes, for studying dam vibrations.
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Date submitted1991-07-09
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Date accepted1991-09-16
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Date published1992-12-08
Adaptive filter for detecting geophysical anomalies of explosion tubes
- Authors:
- V. V. Glazunov
Blast tube geophysical field anomalies are often of low intensity and commensurate with interference fields that are associated with localized inhomogeneities in the upper part of the geologic section.
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Date submitted1991-07-10
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Date accepted1991-09-03
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Date published1992-12-08
On the use of parameters calculated as a result of solving the inverse problem on some transformants of magnetic anomalies
- Authors:
- Yu. P. Goryachev
At present, there is a large number of methods for interpreting magnetic anomalies. Each of the proposed methods has specific advantages and disadvantages, but they have in common that as a result of the interpretation can be unambiguously localized only the special points of the harmonic functions describing the fields studied.
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Date submitted1991-07-21
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Date accepted1991-09-28
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Date published1992-12-08
Determination of physical parameters of common sources of two-dimensional anomalies from the materials of gravimetric and aeromagnetic surveys
- Authors:
- V. P. Zakharov
- S. V. Zakharov
All methods of determining magnetization directions and J/G attribution of arbitrarily shaped sources that involve the combined use of gravity and magnetic anomalies.
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Date submitted1991-07-15
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Date accepted1991-09-08
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Date published1992-12-08
Algorithms for constructing contact surfaces by gravity field and their use for solving some applied problems of exploration geophysics
- Authors:
- S. V. Zakharov
Gravity surveys are widely used at various stages and stages of geological exploration for oil and gas. In accordance with the stages of geological exploration works their results can be applied to solve various tasks.
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Date submitted1991-07-11
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Date accepted1991-09-17
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Date published1992-12-08
Modified dual simplex method in problems of approximation of potential field anomalies
- Authors:
- G. G. Kravtsov
Linear programming has long been successfully applied in geophysics to solve the linearized problem of fitting the parameters of the model of the geological medium by magnetic and gravitational anomalies.
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Date submitted1991-07-08
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Date accepted1991-09-29
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Date published1992-12-08
Application of the potential vector method for determining the position of the contact boundary of the medium interface
- Authors:
- Liu Hong-Xue
- Zhu Jin-Lu
Determination of the position of the interface characterized by a jump of a physical property (density or magnetization) using gravitational or magnetic field data refers to the so-called "inverse" problems of field theory.
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Date submitted1991-07-08
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Date accepted1991-09-05
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Date published1992-12-08
Application of geophysical methods in prospecting for gold deposits in the Oda-Godere area
- Authors:
- Getenet Meva
The article discusses the results of pilot geophysical surveys conducted in 1987 at the Oda-Godere site using magneto- and electro-surveys (resistivity, induced polarization (IP) and natural electric field (EF) methods).
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Date submitted1991-07-15
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Date accepted1991-09-28
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Date published1992-12-08
Relationship between density and velocity of elastic waves in Jordanian sedimentary rocks
- Authors:
- Al Zubi Abdallah Saroor
Creation of complex geophysical models of the Earth's crust and upper mantle of separate regions is one of the urgent problems of modern geophysics. Modeling data allow us to obtain not only additional information about the structure of the lithosphere as a whole, but also to establish a connection between the peculiarities of the deep structure of the territory and the formation and location of mineral deposits.
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Date submitted1991-07-19
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Date accepted1991-09-06
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Date published1992-12-08
Some features of the Hindu Kush deep earthquake zone
- Authors:
- A. M. Nabati
The territory of Afghanistan, especially its northeastern part, is characterized by a relatively high level of seismicity. Here is the Hindu Kush zone of deep earthquakes, within which more than 3 thousand earthquakes occur annually.
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Date submitted1991-07-22
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Date accepted1991-09-02
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Date published1992-12-08
Estimation of parameters determining the thermal regime of the Antarctic ice cover along the profile Mirny Observatory - Vostok station
- Authors:
- K. V. Blinov
- R. N. Vostretsov
- D. N. Dmitriev
Comparison of the results of thermal measurements made by the authors in boreholes drilled along the glaciological profile of Mirny Observatory - Vostok station showed a significant difference in absolute values of the character of temperature change with depth in different regions of the Antarctic ice sheet.
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Date submitted1991-07-24
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Date accepted1991-09-25
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Date published1992-12-08
Principle of new technology of geological exploration for solid minerals (Ore system)
- Authors:
- A. A. Molchanov
The process of studying the earth's subsurface for the purpose of mineral prospecting and exploration is ultimately reduced to the construction of an information model of the studied environment based on the gradual accumulation of comprehensive information about the structure, properties, parameters of the object.