Log in

Relevant bibliographies by topics / Magnetic prospecting Magnetic prospecting Magnetometers / Journal articles

To see the other types of publications on this topic, follow the link: Magnetic prospecting Magnetic prospecting Magnetometers.

Journal articles on the topic 'Magnetic prospecting Magnetic prospecting Magnetometers'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Magnetic prospecting Magnetic prospecting Magnetometers.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Dransfield, Mark. "Searchlights for gravity and magnetics." GEOPHYSICS 80, no. 1 (January 1, 2015): G27—G34. http://dx.doi.org/10.1190/geo2014-0256.1.

Full text

Abstract:

The development of mental schemata is important in developing an understanding of physical phenomena and processes. Gravitational and magnetic fields are often visualized by geophysicists as equipotential surfaces (for gravity) and field lines (for magnetics). In these cases, the schemata treat the geology as the source of the field. In seismic and electromagnetic prospecting, one instead visualizes a field that is emitted by the instrument. Example schemata are traveling wavefronts (seismic) and smoke rings (electromagnetic induction in the dissipative limit). I carried this instrument-focused conceptualization over to potential field prospecting by a schema, which envisages the instrument as a probe, illuminating the earth in a manner analogous to a searchlight. Different potential-field instruments (potentiometers, gravimeters, magnetometers, and gradiometers) each have different beam characteristics and consequently illuminate the earth in different ways. This schema provides a new way of visualizing potential fields in prospecting with applications in instrument development, data acquisition and processing, and interpretation.

APA, Harvard, Vancouver, ISO, and other styles

2

Fu, Guo Hong, and Tian Chun Yang. "Theoretical Analysis of Magnetic-Electric Prospecting Method for Piping and Seepage Detection of Dyke." Applied Mechanics and Materials 103 (September 2011): 587–91. http://dx.doi.org/10.4028/www.scientific.net/amm.103.587.

Full text

Abstract:

On the basis of presenting the piping and seepage detection by magnetic-electric prospecting method, the authors analyzed and testified validity of the method. According to calculated results, the magnitude of magnetic field of artificial current was smaller on section if electrodes and cables were set rationally. Usually, the magnetic field magnitude of piping had several times to more than decuple comparing with magnetic field of artificial current. So, the magnetic abnormity could be detected easily by high-precision magnetometers. At the same time, their curves’ characteristics were different evidently. The analysis result shows that the piping and seepage of dyke can be detected by combining method of direct current supplying and high-precision magnetic survey.

APA, Harvard, Vancouver, ISO, and other styles

3

Clark, Anthony J. "Archaeological geophysics in Britain." GEOPHYSICS 51, no. 7 (July 1986): 1404–13. http://dx.doi.org/10.1190/1.1442189.

Full text

Abstract:

I describe the approach followed by the Ancient Monuments Laboratory in adapting the instrumentation and techniques of resistivity and magnetic prospecting to the near‐surface problems of mapping buried archaeological sites. Such sites demand rapid and intensive ground coverage and the highest possible spatial resolution and instrument sensitivity. Resistivity is used largely for planning building foundations. Optimized resistivity results have required comparative studies of electrode configurations and the effect on resistivity of climatic variations in different lithologies. Magnetic prospecting is especially effective for detecting (1) fired structures such as kilns, and (2) excavated features such as ditches and pits filled with topsoil of relatively high susceptibility (which is further enhanced by human activities). Speed and resolution requirements have caused the proton magnetometer to be abandoned in favor of the fluxgate gradiometer. Valuable information about human activity can also be obtained from magnetic susceptibility measurements on topsoil.

APA, Harvard, Vancouver, ISO, and other styles

4

Liu, Qiang, and Run Min Peng. "Application of High-Precision Magnetic Survey to the Investigation of Mineral Resources in Halaganlawusu Area, Inner Mongolia." Advanced Materials Research 1073-1076 (December 2014): 2001–4. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.2001.

Full text

Abstract:

In this paper 1:10 000 high-precision magnetic survey work has been done using GSM-19T proton magnetometer in Halaganlawusu area. There were data processing including gridding, filtering, reduction to the pole, continuation, derivation, and so on. By precise interpretation and inference with magnetic anomaly, the distribution characteristics of basic rock mass was found out. According to the magnetic survey data and geological research, fitting-inversion of measured magnetic section P1, P2 were done. It preliminarily concluded the distribution characteristics of underground ore rock mass and achieved the effect of the geophysical prospecting.

APA, Harvard, Vancouver, ISO, and other styles

5

Liang, Shengjun, Siyuan Sun, and Hongfei Lu. "Application of Airborne Electromagnetics and Magnetics for Mineral Exploration in the Baishiquan–Hongliujing Area, Northwest China." Remote Sensing 13, no. 5 (February 27, 2021): 903. http://dx.doi.org/10.3390/rs13050903.

Full text

Abstract:

Airborne electromagnetics is an effective and efficient exploration tool in shallow mineral exploration for its high efficiency and low cost. In 2016, airborne electromagnetic and airborne magnetic surveys have been carried out at the border of Xinjiang Uygur Autonomous Region and Gansu Province, the Northwest China. With an integrated system, the airborne electromagnetics and airborne magnetic data were collected simultaneously by AreoTEM-IV system from Aeroquest International Limited in Vancouver, BC, Canada, and the CS3 Cesium Vapor magnetometer from Scintrex in Concord, ON, Canada. About 3149 line-km of both data with 250 m line space were acquired. After data processing, the comprehensive analysis and interpretation of resistivity and magnetic anomalies has been carried out to infer lithological structure and outline the potential ore deposits. Verified by the ground surveys, seven outlined anomalies are consistent with the known ore sites, and one new gold deposit and several mineralization clues were found. The prospective reserves of gold are expected to exceed 10 tons. Besides, some prospecting target areas were outlined as the possible locations of copper–nickel deposits. The successful case shows the airborne magnetic data accords with geological structures, and the airborne electromagnetic method is effective in finding metal mineral resources, which can help to quickly identify potential ore targets with no surface outcrop.

APA, Harvard, Vancouver, ISO, and other styles

6

Nilov, M. Y., L. I. Bakunovich, N. V. Sharov, and B. Z. Belashev. "D magnetic model of the Earth’s crust of the White Sea and adjacent territories." Arctic: Ecology and Economy 11, no. 3 (September 2021): 375–85. http://dx.doi.org/10.25283/2223-4594-2021-3-375-385.

Full text

Abstract:

An important task for the White Sea region, Russia’s second largest diamond-producing province, is the search for magmatic bodies overlapped by sedimentary cover via magnetometer survey. The models, linking local and magnetic anomalies with their sources, are essential for interpretation of search results. The aim of the study is to build a 3D magnetic model of the Earth’s crust for the White Sea region using aeromagnetic data and the modeling technologies of the Integro software package. The simulation is basing on a digital map of the pole-reduced anomalous magnetic field. The sources of magnetic anomalies are believed to be located in the Earth’s crust. The researchers obtained 3D distribution of the relative magnetic susceptibility of rocks by solving the inverse problem of magnetic prospecting. To separate the magnetic sources by spatial frequencies and depth, the model magnetic field was recalculated upward, as well as the TDR derivatives, which determine the lateral boundaries of the sources of positive magnetic field anomalies, were calculated. The researchers further analyzed 2D distributions of the magnetic sources of the model for vertical and horizontal sections with depths of 10, 15 and 20 km, thus proving the relationship between the surface and deep structures of the magnetic sources of the Earth’s crust in the region.

APA, Harvard, Vancouver, ISO, and other styles

7

DAVYDOV, Vadim Anatol’evich. "Geophysical surveys in the area of the Krylatovskaya water well." NEWS of the Ural State Mining University 1 (March 15, 2021): 65–73. http://dx.doi.org/10.21440/2307-2091-2021-1-65-73.

Full text

Abstract:

Relevance and purpose of the work. Surface sources of clean water are increasingly depleted. In this regard, the role of underground sources of drinking and domestic water supply is increasing. Geophysical exploration methods can be an e ective tool for fnding groundwater. The tasks of the research included determining the possibilities of magnetic prospecting in the areal search for promising zones, and identifying the features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of an operating water well. Methodology. The magnetic field was surveyed with an MMP-203 proton magnetometer (Geologorazvedka plant, Leningrad). Electrical exploration included vertical electrical sounding (VES) with ERA equipment (GNPP Geologorazvedka, St. Petersburg) and recording of audio magnetotelluric fields with OMAR-2 equipment (IGF UB RAS, Ekaterinburg). Results. The result of the magnetic survey was a map of the anomalous magnetic field of the study area, where the water-abundant groundwater zone of the weathering crust can be distinguished by structural features. The zones of tectonic faults, promising for the presence of fractured-vein waters, are confedently distinguished by positive linear anomalies of the magnetic field. The characteristic features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of distribution of fractured waters have been clarified. The most revealing behavior is the behavior of the real and imaginary quadratures of the magnetovariational tipper, characterized by minimum values and zero crossing, respectively. According to the results of electromagnetic sounding, an increase in the thickness of the weathering crust with a decrease in resistance is recorded in the area of the water intake well, which is evidence of its water cut. Conclusions. The significance of magnetic prospecting for clarifying the structural and geological structure of the territory when searching for water-saturated zones has been determined. The high e£ciency of electromagnetic soundings on direct and alternating current was confirmed to determine the nature, depth and power of the identied structures. Traditionally studied, in the search and exploration of groundwater, geophysical felds are replenished with new electromagnetic parameters. These include the module and quadratures of the audio range magnetovariational tipper. The research results indicate that these parameters are anomalous in relation to aquifers, which allows us to give reasonable recommendations on the location of drilling production wells.

APA, Harvard, Vancouver, ISO, and other styles

8

Davydov, Vadim A. "Geophysical research at the Revda intersection of the Serov-Mauk regional fault." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (March 30, 2021): 64–69. http://dx.doi.org/10.21440/0536-1028-2021-2-64-69.

Full text

Abstract:

Research aim is to study the characteristic features of geophysical fields over the main geological structures in the zone of influence of the Serov-Mauk regional fault in the Middle Urals. Methodology. Electromagnetic studies included an express version of audiomagnetotelluric sounding (AMT) with a broadband OMAR-2m receiver (Institute of Geophysics UB RAS, Ekaterinburg). Office processing is based on obtaining frequency spectra of impedance using fast Fourier transform, and their transformation into deep sections of electrophysical parameters of the medium. Magnetic prospecting was carried out using GEM GSM-19T proton magnetometer (GEM Systems, Canada). Gamma-field survey was carried out with a survey radiometer SRP-68-01 (Electron, Zhovti Vody). Results. Based on observation processing results, high-quality sections of electrical resistivity and effective longitudinal conductivity were constructed on the parametric profile, as well as graphs of magnetic and radiation fields. The studies revealed features of change in the electrophysical parameters and potential fields over various geological structures of the near-contact fault zone. Summary. The signs of the main geologic features border lines were identified by changes in physical properties. The lithological and tectonic boundaries have been identified of a complex rock assemblage adjacent to the regional fault according to the characteristic anomalies of geophysical parameters. Geophysical survey results comply with the real geological conditions of the study area.

APA, Harvard, Vancouver, ISO, and other styles

9

Davydov, Vadim, and Andrei Nazarov. "Geophysical survey at the southern end of the Degtyarsky pyrite deposit." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal, no. 2 (March 30, 2020): 37–43. http://dx.doi.org/10.21440/0536-1028-2020-2-37-43.

Full text

Abstract:

Research aim is to study features peculiar to geophysical fields over the main geological features of the southern part of the Degtyarsky pyrite deposit at the Middle Urals. Methodology. Electromagnetic survey included symmetrical electric profiling (SEP) with ERA-MAX equipment (ERA Research and Production Enterprise, St. Petersburg) and rapid audio-magnetotelluric sounding (ATMS) with OMAR-2m wideband receiver (Institute of Geophysics UB RAS, Ekaterinburg). Magnetic survey was carried out with the help of the proton procession magnetometer GSM-19T (GEM Systems, Canada), gamma field survey was carried out with a survey meter SRP-68-01 (Electron, Zhovti Vody). Results. According to the results of observational analysis, high-quality sections of electrophysical parameters of the environment were constructed at the parametric profile together with the charts of other geophysical fields. The studies have shown significant changes of resistivity and potential fields anomalies over various geological features of the ore field. Summary. Geophysical indications of border line of the main geologic features have been determined. Excessive electrical conductivity of ore control tectonic structures and radiation anomaly have been revealed in the promises of the ore body, which can serve a prospecting criterion for a similar ore body. Geophysical results are well within the existing geological data on the Degtyarsky mine.

APA, Harvard, Vancouver, ISO, and other styles

10

Luo, Piao, and Tiancheng Hu. "Application of Computer Program Combined with Magnetic Prospecting in Polymetallic Ore Prospecting." Journal of Physics: Conference Series 1648 (October 2020): 032001. http://dx.doi.org/10.1088/1742-6596/1648/3/032001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Thiesson, Julien, Marie Pétronille, and François-Xavier Simon. "Magnetic signal prospecting using multi parameter measurements." ArchéoSciences, no. 33 (suppl.) (October 30, 2009): 363–65. http://dx.doi.org/10.4000/archeosciences.1849.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Mogilatov, V. S., N. O. Kozhevnikov, and A. V. Zlobinsky. "Magnetic measurements in electrical prospecting by resistivity methods." Russian Geology and Geophysics 59, no. 4 (April 2018): 432–37. http://dx.doi.org/10.1016/j.rgg.2018.03.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Boschi, Federica. "Magnetic Prospecting for the Archaeology of Classe (Ravenna)." Archaeological Prospection 19, no. 3 (July 2012): 219–27. http://dx.doi.org/10.1002/arp.1430.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Tsivouraki, B., and G. N. Tsokas. "Wavelet transform in denoising magnetic archaeological prospecting data." Archaeological Prospection 14, no. 2 (2007): 130–41. http://dx.doi.org/10.1002/arp.289.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Thiesson, Julien, Alain Tabbagh, and Sébastien Flageul. "TDEM magnetic viscosity prospecting using a Slingram coil configuration." Near Surface Geophysics 5, no. 6 (May 1, 2007): 363–74. http://dx.doi.org/10.3997/1873-0604.2007018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Drabich, P. P. "Computing circuit for electrical prospecting with pulsed magnetic induction." Measurement Techniques 32, no. 5 (May 1989): 462–66. http://dx.doi.org/10.1007/bf00866230.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Desvignes, Guy, and Alain Tabbagh. "Simultaneous interpretation of magnetic and electromagnetic prospecting for characterization of magnetic features." Archaeological Prospection 2, no. 3 (September 1995): 129–39. http://dx.doi.org/10.1002/1099-0763(199509)2:3<129::aid-arp6140020303>3.0.co;2-w.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

El Abidi El Alaoui, Meryeme, Latifa Ouadif, Lahcen Bahi, and Ahmed Manar. "Contribution of applied geophysics in mining prospecting." E3S Web of Conferences 150 (2020): 03016. http://dx.doi.org/10.1051/e3sconf/202015003016.

Full text

Abstract:

The Eastern High Atlas (Morocco) contains a variety of rocks with different magnetic susceptibility, among these rocks are those which constitute the Proterozoic and Paleozoic basement of the plain of Tamlelt which is the study area. This work is devoted to the analysis and interpretation of the main magnetic anomalies using the Oisis Montaj program, and the correlation using ArcGis software, from the main « magnetic facies» detected, to the main geological formations affecting the geological basement, highlighted in the plain of Tamlelt. The map of the residual magnetic field shows elongated magnetic anomalies in the direction E-W and NE-SW. the reduction to the pole shows at the level of the plain of Tamlelt a large anomaly elongated in the direction E-W then in the direction NW-SE. The transformation of Tilt Angle allowed to delimit the anomalies of low or high amplitude that limit the shallow structures. The quantitative interpretation of the main magnetic anomalies highlighted in the study area has made it possible to characterize the deep structure of the magnetic bodies, which could contain sulphide clusters, according to the geological and mining context of the studied area.

APA, Harvard, Vancouver, ISO, and other styles

19

Miao, Jin Xiang, Cai Xia Li, Jin Qu, Xin Chen, Hong Wang, and Qin Chang Song. "3D Geological Modeling (Deposit Scale) for Granite Rock-Mass in Yuku Area, Luanchuan, China." Advanced Materials Research 962-965 (June 2014): 92–98. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.92.

Full text

Abstract:

In order to find out the spatial shape of a granite rock-mass, three kinds of data can be used:1) The exploration data (drilling data, geological profile data, geological boundaries and so on); 2) The ridge extension line data applied to speculate the concealed granite rock-mass based on low magnetic-anomaly zone (△T≤50nT) from high-precision magnetic-prospecting and Controlled-Source Audio-Frequency Magnetotelluric (CSAMT) results; 3) The other interpolated data of concealed granite rock-mass boundary on CSAMT comprehensive prospecting profile. With these data, a simulating 3D model of the granite rock-mass can be established to provide basic data for prospecting deep concealed porphyry-polymetallic ore deposits.

APA, Harvard, Vancouver, ISO, and other styles

20

Gibson, Terrance H. "Magnetic prospection on prehistoric sites in Western Canada." GEOPHYSICS 51, no. 3 (March 1986): 553–60. http://dx.doi.org/10.1190/1.1442109.

Full text

Abstract:

Prehistoric sites in Western Canada present unusual conditions for magnetic prospection. Archaeological features are few and difficult to discern using standard prospection procedures. However, by addressing specific types of features, particularly fire hearths and fired rock and pottery, useful information about the cultural content of an archaeological site can be obtained. To secure comparative data, a number of replicative studies were conducted, with specific reference to determining a typical anomaly produced by the features. A small fire pit was kindled several times and repeatedly monitored with surveys using a single proton magnetometer. Fired rock received similar treatment. An in situ collection of local aboriginal pottery was also assayed. The experimental results indicated that fired rock will produce a detectable magnetic field after one firing, but a hearth must be rekindled at least three times to produce a significant anomaly. Pottery fragments also generate a small magnetic field which requires that the material be very close to the site surface to be discerned. The experiments also suggested that intepretation is enhanced by obtaining two magnetic readings per sensor station and using their difference to minimize ambient field fluctuations and natural magnetic variation caused by subsurface geology. The model data were used to interpret the results of a magnetic assessment of a large prehistoric campsite in Saskatchewan. Excavation results agreed well with the information provided by the predictive models. Two temporary dwelling remnants and two pottery vessels were exposed in areas determined to be magnetically significant. The magnetic assessment technique, when used to locate specific feature types, can be useful in prehistoric archaeological site assessment.

APA, Harvard, Vancouver, ISO, and other styles

21

Slater, Lee D., Nathan D. Hamilton, Stewart Sandberg, and Mariusz Jankowski. "Magnetic prospecting at a prehistoric and historic settlement in Maine." Archaeological Prospection 7, no. 1 (January 2000): 31–41. http://dx.doi.org/10.1002/(sici)1099-0763(200001/03)7:1<31::aid-arp137>3.0.co;2-m.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Zunino, Andrea, Federico Benvenuto, Egidio Armadillo, Mario Bertero, and Emanuele Bozzo. "Iterative deconvolution and semiblind deconvolution methods in magnetic archaeological prospecting." GEOPHYSICS 74, no. 4 (July 2009): L43—L51. http://dx.doi.org/10.1190/1.3129263.

Full text

Abstract:

In archaeological magnetic prospecting, most targets can be modeled by a single layer of constant burial depth and thickness. With this assumption, recovery of the magnetization distribution of the buried layer from magnetic surface measurements is a 2D deconvolution problem. Because this problem is ill posed, it requires regularization techniques to be solved. In analogy with image reconstruction, the solution showing the resolved subsoil features can be considered a focused version of the blurred and noisy magnetic image. Exploiting image deconvolution tools, two iterative reconstruction methods are applied to minimize the least-squares functional: the standard projected Landweber method and a proposed modification of the iterative space reconstruction algorithm. Different regularization functionals inject a priori information in the optimization problem, and the split-gradient method modifies the algorithms. Numerical simulations in the case of perfect knowledge of the impulse response functions demonstrate that the edge-preserving, total-variation functionals give the best results. An iterative semiblind deconvolution method to estimate the burial depth of the source layer was used with a real data set to test the effectiveness of the method.

APA, Harvard, Vancouver, ISO, and other styles

23

Fernandez Romero, Sergio, Pablo Morata Barrado, Miguel Angel Rivero Rodriguez, Gustavo Adolfo Vazquez Yañez, Eduardo De Diego Custodio, and Marina Díaz Michelena. "Vector Magnetometry Using Remotely Piloted Aircraft Systems: An Example of Application for Planetary Exploration." Remote Sensing 13, no. 3 (January 23, 2021): 390. http://dx.doi.org/10.3390/rs13030390.

Full text

Abstract:

Geomagnetic prospection is an efficient and environmentally friendly geophysical method for the analysis of the magnetic minerals’ distribution in the subsurface. High-resolution measurements require on-ground campaigns. However, these activities might imply high costs, risk and time consumption. Some more recent works have started to use magnetometers on-board remote piloted aircrafts. Normally, they fly at a constant altitude and use scalar probes. This configuration permits the determination of the magnitude of the magnetic field but not the direction, and requires advanced techniques for in-depth interpretation of the sources. In this manuscript, we describe the accommodation of a system for vector magnetometry in a drone whose flight altitude follows the elevation of the terrain. This singularity improves the capability of interpretation, including constraints in dating due to the record of the geomagnetic field. The work consists of the design, development and implementation of a solidary payload system anchored to the body of the platform in order to determine the vector magnetic field. It describes the details of the system and the performance characteristics obtained after the calibration, as well as its demonstration via a field campaign in the spatter deposits of Cerro Gordo volcano in Campos de Calatrava volcanic province in Spain.

APA, Harvard, Vancouver, ISO, and other styles

24

Kharitonov, Andrey L. "Geological and geophysical analysis of morphological structures of the central type in the Eastern European platform territory and its connection with hydrocarbon fields." Izvestiya of Saratov University. New Series. Series: Earth Sciences 21, no. 1 (March 25, 2021): 65–72. http://dx.doi.org/10.18500/1819-7663-2021-21-1-65-72.

Full text

Abstract:

Correlative interrelation of hydrocarbon field arrangement and morphological structures of the central type is revealed. Possible natural mechanisms of morphological structures formation of the central type are considered. By results of geological and geophysical interpretation of magnetic prospecting, gravity prospecting, heat floor data the deep structure of these morphological structures is shown.

APA, Harvard, Vancouver, ISO, and other styles

25

Petukhov, Yu M., and O. P. Khvostov. "Increasing the information content of magnetic prospecting by invariant measurement of magnetic induction nonuniformities." Measurement Techniques 35, no. 10 (October 1992): 1183–90. http://dx.doi.org/10.1007/bf00977480.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Bembel, S. R., V. G. Kobzov, R. M. Bembel, and F. Z. Khafizov. "FEATURES OF THE GEOLOGICAL STRUCTURE OF SEDIMENTARY COVER OF FROLOVSKAYA MEGADEPRESSION DERIVED FROM THE RESULTSOF GENERALIZATION OF GEOLOGICAL AND GEOPHYSICAL DATA." Oil and Gas Studies, no. 5 (October 30, 2018): 7–16. http://dx.doi.org/10.31660/0445-0108-2018-5-7-16.

Full text

Abstract:

The article is devoted to the features of the geological structure of Jurassic-Cretaceous deposits of Frolovskaya megadepression. These features are derived from the results of the generalization of the materials of regional seismic profiles, maps of gravity and magnetic prospecting, drilling data. The main petroleum prospects are associated with Jurassic deposits and pre-Jurassic basement. We conclude that it is necessary to intensify further researches with carrying out the entire complex of geophysical methods, including magnetic and gravity prospecting with an increased density of observations.

APA, Harvard, Vancouver, ISO, and other styles

27

Li, Gang, Lin Zhang, Yan Fu, and Yong Bo Zhou. "Geophysical Model of Coal Prospecting in Uplift Area." Applied Mechanics and Materials 694 (November 2014): 312–20. http://dx.doi.org/10.4028/www.scientific.net/amm.694.312.

Full text

Abstract:

The forecast and verification of concealed coal field in China mainly focus on the concealed uplift area (or exposure area of bedrock) and the slope of the known coal field and its surrounding area of sinking area. However, the coal inside the concealed uplift area where it is believed to be no coal is rarely studied. Based on regional geological setting and comprehensive study, the low gravity and low magnetic area is considered as target area for relict concealed coal field. Then high-resolution seismic reflection method is used to ascertain the thickness of Cenozoic rock strata and the depth of coal bed in the target area directly. Through the drilling verification, the result is quite good. In conclusion, gravity, magnetic together with seismic method is an effective way for prospecting concealed coal field in the uplift area.

APA, Harvard, Vancouver, ISO, and other styles

28

Zubarev, Viktor G., Sergey L. Smekalov, and Sergey V. Yartsev. "MAGNETIC PROSPECTING ON THE ANCIENT SETTLEMENTS IN THE TRACT ADZHIEL IN 2017." Historical and social-educational ideas 9, no. 5/1 (January 1, 2017): 69–75. http://dx.doi.org/10.17748/2075-9908-2017-9-5/1-69-75.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Becker, Helmut. "From nanotesla to picotesla — A new window for magnetic prospecting in archaeology." Archaeological Prospection 2, no. 4 (December 1995): 217–28. http://dx.doi.org/10.1002/1099-0763(199512)2:4<217::aid-arp6140020405>3.0.co;2-u.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Kruglyakov, M. S. "Estimating the influence zone of a vertical magnetic dipole in aerial prospecting." Computational Mathematics and Modeling 21, no. 1 (January 2010): 30–40. http://dx.doi.org/10.1007/s10598-010-9052-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Yan, Jiayong, Xiangbin Chen, Guixiang Meng, Qingtian Lü, Zhen Deng, Guang Qi, and Hejun Tang. "Concealed faults and intrusions identification based on multiscale edge detection and 3D inversion of gravity and magnetic data: A case study in Qiongheba area, Xinjiang, Northwest China." Interpretation 7, no. 2 (May 1, 2019): T331—T345. http://dx.doi.org/10.1190/int-2018-0066.1.

Full text

Abstract:

Qiongheba is a polymetallic ore concentration area located in the east margin of the Junggar Basin in Xinjiang, Northwest China. Because all three main types of metal deposits (porphyry-type copper, skarn-type iron-copper, and structural altered rock-type gold deposits) in this area are controlled strictly by fault structures and intrusions buried under the Quaternary sediments, the detection of concealed faults and intrusions is of great significance for mineral prospecting. We aim to make clear the faults and intrusions based on the high-precision gravity and magnetic data set. First, multiscale edge detection of gravity and magnetic data is used to distinguish and divide the faults system. Second, 3D recognition of concealed intrusions combining with 3D inversion and multiscale edge detection of gravity and magnetic is carried out to construct the 3D formation of concealed intrusions. Last, seven prospecting targets are proposed based on our research and existed regional geologic and geochemical information, and two of them have been confirmed to be rich in polymetal (Cu-Fe-Mo-Au in the Layikeleke deposit and Cu in the Baxi deposit) by drilling. Our research results not only proved the effectiveness of the combination method of 3D inversion and multiscale edge detection of gravity and magnetic data in the prospecting of concealed faults and intrusions, but they also provide abundant information for mineral exploration prediction in the Qiongheba area.

APA, Harvard, Vancouver, ISO, and other styles

32

Zitouni, A., A. Boukdir, H. El Fjiji, W. Baite, V. R. Ekouele Mbaki, H. Ben Said, Z. Echakraoui, A. Elissami, and M. R. El Maslouhi. "Application of electrical geophysics to the release of water resources, case of Ain Leuh (Morocco)." E3S Web of Conferences 37 (2018): 05001. http://dx.doi.org/10.1051/e3sconf/20183705001.

Full text

Abstract:

Being seen needs in increasing waters in our contry for fine domestics, manufactures and agricultural, the prospecting of subterranean waters by geologic and hydrogeologic classic method remains inaplicable in the cases of the regions where one does not arrange drillings or polls (soundings) of gratitude (recongnition) in very sufficient (self-important) number. In that case of figure, the method of prospecting geophysics such as the method of nuclear magnetic resonance (NMR) and the method of the geophysics radar are usually used most usually because they showed, worldwide, results very desive in the projects of prospecting and evaluation of the resources in subterranean waters. In the present work, which concerns only the methodology of the electric resistivity, we treat the adopted methodological approach and the study of the case of application in the tray of Ajdir Ain Leuh.

APA, Harvard, Vancouver, ISO, and other styles

33

Mansouri, E., F. Feizi, and A. A. Karbalaei Ramezanali. "Identification of magnetic anomalies based on ground magnetic data analysis using multifractal modelling: a case study in Qoja-Kandi, East Azerbaijan Province, Iran." Nonlinear Processes in Geophysics 22, no. 5 (October 7, 2015): 579–87. http://dx.doi.org/10.5194/npg-22-579-2015.

Full text

Abstract:

Abstract. Ground magnetic anomaly separation using the reduction-to-the-pole (RTP) technique and the fractal concentration–area (C–A) method has been applied to the Qoja-Kandi prospecting area in northwestern Iran. The geophysical survey resulting in the ground magnetic data was conducted for magnetic element exploration. Firstly, the RTP technique was applied to recognize underground magnetic anomalies. RTP anomalies were classified into different populations based on the current method. For this reason, drilling point area determination by the RTP technique was complicated for magnetic anomalies, which are in the center and north of the studied area. Next, the C–A method was applied to the RTP magnetic anomalies (RTP-MA) to demonstrate magnetic susceptibility concentrations. This identification was appropriate for increasing the resolution of the drilling point area determination and decreasing the drilling risk issue, due to the economic costs of underground prospecting. In this study, the results of C–A modelling on the RTP-MA are compared with 8 borehole data. The results show that there is a good correlation between anomalies derived via the C–A method and the log report of boreholes. Two boreholes were drilled in magnetic susceptibility concentrations, based on multifractal modelling data analyses, between 63 533.1 and 66 296 nT. Drilling results showed appropriate magnetite thickness with grades greater than 20 % Fe. The total associated with anomalies containing andesite units hosts iron mineralization.

APA, Harvard, Vancouver, ISO, and other styles

34

Khesin, B. E., and L. V. Eppelbaum. "Near‐surface thermal prospecting: Review of processing and Interpretation." GEOPHYSICS 59, no. 5 (May 1994): 744–52. http://dx.doi.org/10.1190/1.1443632.

Full text

Abstract:

Temperature measurements at shallow depths (up to 3 m) contain useful information about features of the geological structures in the areas under investigation; however, the noise caused by seasonal temperature variations and terrain relief effects may significantly distort the observed temperature field. Therefore, procedures are developed for the calculation and removal of these noise sources: (a) seasonal variations are first eliminated by a procedure using repeated observations; (b) terrain relief corrections are calculated by a correlation technique, which facilitates the identification of anomalies associated with concealed geological features. Essential similarities between thermal and magnetic prospecting make it possible to apply to thermal prospecting modifications of the rapid methods of characteristic points and tangents developed for magnetic prospecting. These methods are applicable to conditions of inclined relief, arbitrary magnetization polarization), and an unknown level of the normal field. The methods can be used to locate disturbing bodies by their associated temperature anomalies. Interpretation is made possible by approximating bodies by a dipping thin sheet or a horizontal circular cylinder. The interpretation results obtained both on models and polymetallic (Greater Caucasus) and oil and gas (Middle Kura Depression) deposits testify to the accuracy and reliability of these methods. These methods were also used successfully for interpretation of temperature anomaly over underground cavity in Cracov (Poland).

APA, Harvard, Vancouver, ISO, and other styles

35

Lam, Hing‐Lan. "On the prediction of low‐frequency geomagnetic pulsations for geophysical prospecting." GEOPHYSICS 54, no. 5 (May 1989): 635–42. http://dx.doi.org/10.1190/1.1442690.

Full text

Abstract:

Pulsations of the earth’s magnetic field due to solar‐terrestrial interaction are used for geomagnetic soundings to study conductive structures in the earth. However, the pulsations are also the unwanted background noise for magnetic exploration surveys. It is, therefore, desirable to conduct the sounding or survey work during geomagnetic conditions optimum for that particular undertaking. This paper relates the pulsational activity to a parameter (the DRX index) which characterizes the magnetic activity for each individual day and which is routinely forecast in Canada. By using the relations established in this study, it is possible to infer the future levels of pulsations from the forecast DRX, and a period of desired pulsational activity can thus be selected for the field work. In the course of a day, the afternoon is appropriate for conducting magnetic surveys because of a generally lower level of pulsational activity and a virtual absence of intense short‐period pulsations, while morning is optimal for carrying out induction soundings because of more intense pulsational activity and a tendency of enhanced long‐period pulsations to recur during that time of day.

APA, Harvard, Vancouver, ISO, and other styles

36

Menshov, Oleksandr, Roman Kuderavets, Sergiy Vyzhva, Igor Chobotok, and Tatyana Pastushenko. "Magnetic mapping and soil magnetometry of hydrocarbon prospective areas in western Ukraine." Studia Geophysica et Geodaetica 59, no. 4 (September 10, 2015): 614–27. http://dx.doi.org/10.1007/s11200-015-0705-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Benech, Christophe, Alain Tabbagh, and Guy Desvignes. "Joint inversion of EM and magnetic data for near‐surface studies." GEOPHYSICS 67, no. 6 (November 2002): 1729–39. http://dx.doi.org/10.1190/1.1527074.

Full text

Abstract:

Magnetic and electromagnetic measurements are influenced by magnetic susceptibility and, thus, are widely used in geophysical surveys for archeology or pedology. To date, the data inversion is performed separately. A filtering process incorporating both types of data is presented here. After testing the algorithm with synthetic data, the algorithm is used in several case studies in archeological prospecting. This approach presents two advantages: establishing the presence of remanent magnetizations (viscous or thermoremanent), and achieving more refined depth analysis of the anomaly.

APA, Harvard, Vancouver, ISO, and other styles

38

Ge, Jian, Haobin Dong, Huan Liu, Zhiwen Yuan, He Dong, Zhizhuo Zhao, Yonghua Liu, Jun Zhu, and Haiyang Zhang. "Overhauser Geomagnetic Sensor Based on the Dynamic Nuclear Polarization Effect for Magnetic Prospecting." Sensors 16, no. 6 (June 1, 2016): 806. http://dx.doi.org/10.3390/s16060806.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Gadirov, V., O. Menshov, R. Kuderavets, and K. Gadirov. "Gravity-magnetic survey for the oil and gas prospecting in Azerbaijan and Ukraine." Visnyk of Taras Shevchenko National University of Kyiv. Geology 74 (2016): 23–33. http://dx.doi.org/10.17721/1728-2713.74.05.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Fassbinder, Jörg W. E. "Seeing beneath the farmland, steppe and desert soil: magnetic prospecting and soil magnetism." Journal of Archaeological Science 56 (April 2015): 85–95. http://dx.doi.org/10.1016/j.jas.2015.02.023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

国, 吉安. "The Magnetic Exploration and Prospecting Direction of Shilu Iron Deposit in Hainan Area." Advances in Geosciences 08, no. 01 (2018): 179–85. http://dx.doi.org/10.12677/ag.2018.81019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Herwanger, Jörg, Hansruedi Maurer, Alan G. Green, and Jürg Leckebusch. "3-D inversions of magnetic gradiometer data in archeological prospecting: Possibilities and limitations." GEOPHYSICS 65, no. 3 (May 2000): 849–60. http://dx.doi.org/10.1190/1.1444782.

Full text

Abstract:

A vertical‐gradient magnetic system based on optically pumped Cesium sensors has been used to map subtle magnetic anomalies across infilled pit houses and ditches at a medieval archeological site in northern Switzerland. For estimating the locations and dimensions of these features from the recorded data, we have designed and implemented an appropriate inversion scheme. Tests of this scheme on realistic synthetic data sets suggested that suitable minimum magnetic susceptibility contrasts and smoothing parameters for the inversion may be directly extracted from the data. Inversions with minimum magnetic susceptibility contrasts generated causative bodies with maximum plausible sizes. By using higher magnetic susceptibility contrasts, a complete suite of models that matched the data equally well was produced. To constrain better the magnetic susceptibility constrast within a selected area of the archeological site, shallow samples of topsoil and sediment were analyzed in the laboratory. An inversion based on the measured magnetic susceptibility contrast yielded reliable estimates of the locations, 3-D geometries, and sizes of two small pit houses. The depth extent of one pit house was subsequently verified by shallow drilling. We concluded that inversions of vertical‐gradient magnetic data constrained by magnetic susceptibility or shallow borehole information are rapid and inexpensive means of providing key knowledge on the depth distribution of inductively magnetized bodies.

APA, Harvard, Vancouver, ISO, and other styles

43

Sterligov, Boris, and Sergei Cherkasov. "Reducing Magnetic Noise of an Unmanned Aerial Vehicle for High-Quality Magnetic Surveys." International Journal of Geophysics 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/4098275.

Full text

Abstract:

The use of light and ultralight unmanned aerial vehicles (UAVs) for magnetic data acquisition can be efficient for resolving multiple geological and engineering tasks including geological mapping, ore deposits’ prospecting, and pipelines’ monitoring. The accuracy of the aeromagnetic data acquired using UAV depends mainly on deviation noise of electric devices (engine, servos, etc.). The goal of this research is to develop a nonmagnetic unmanned aerial platform (NUAP) for high-quality magnetic surveys. Considering parameters of regional and local magnetic survey, a fixed-wing UAV suits geological tasks better for plain area and copter type for hills and mountains. Analysis of the experimental magnetic anomalies produced by a serial light fixed-wing UAV and subsequent magnetic and aerodynamic modeling demonstrates a capacity of NUAP with internal combustion engine carrying an atomic magnetic sensor mounted on the UAV wings to facilitate a high-quality magnetic survey.

APA, Harvard, Vancouver, ISO, and other styles

44

Li, Feng, and Guo Wenjian. "Analysis on data processing of three-component magnetic survey in well." International Journal of Geology 1, no. 1 (July 21, 2016): 1. http://dx.doi.org/10.26789/ijg.2016.004.

Full text

Abstract:

the three-component magnetic survey in well, as an important means in the geological prospecting, plays an important complementary role in geological magnetic survey data. During the data process of three-component magnetic survey, the drilling technology, instruments of three-component magnetic survey in well as well as performance and precision of the gyroscope inclinometer should be considered synthetically, and the appropriate data processing method should be selected according to the different trajectory feature of borehole, in order to improve the accuracy of data interpretation.

APA, Harvard, Vancouver, ISO, and other styles

45

Lu, Jia, and Wei Xuan Fang. "Characteristics of Magnetic Susceptibility of the Cores in Yinmin Mining Area." Advanced Materials Research 912-914 (April 2014): 65–68. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.65.

Full text

Abstract:

Through the work of measuring magnetic susceptibility of the cores in Yinmin mining area, Yunnan, one can draw a conclusion that different strata have different magnetic susceptibility, and variations of magentic susceptibility as a whole have significant changes, concerned primarily with mafic ferruginous lava, iron ore, ferruginous dolomite and fine grained diabase in the Luoxue Group and the Yinmin Group. The study of magnetic susceptibility of the rocks is not only relevant to magnetic prospecting and the boreholetricomponent magnetic, but also a rapid and effective means of geological exploration for the iron-oxide copper gold (IOCG) deposit in Yinmin mining area.

APA, Harvard, Vancouver, ISO, and other styles

46

Misiewicz, Krzysztof, Jamel Hajji, and Tomasz Waliszewski. "Prospections non invasives sur le site de Mustis/Musti (El Krib) en Tunisie." Światowit 57 (December 17, 2019): 207–22. http://dx.doi.org/10.5604/01.3001.0013.6817.

Full text

Abstract:

The objective of the first step of the non-invasive survey carried out on the Mustis site described herein was to verify the possibility of locating archaeological remains and to detect the location of the supposed remains by geophysical measurements (magnetic and electric methods). Magnetic measurements were made with Geometrics G-858 Cesium magnetometer with two probes located on the same horizontal level at 0.5 m distance or on the same vertical level at 0.5 m and 0.75 m above the ground level. The instrument recorded the values of the total vector of the magnetic field strength and made it possible to calculate the pseudo-gradient of its components (horizontal or vertical). Electric measurements were made by means of axial dipole-dipole electrode configurations (parallel) with AB current electrodes with spacing of one metre and electrodes of potential MN (identical spacing) at equal distance D at 4 and 6 metres, which made it possible to record values of apparent resistivity of the subsoil, with the penetration depth of the current of c. 2.0 and 3.5 m, respectively, below the current ground level. At the time of the data interpretation, the suspected locations of the remains causing the anomalies were indicated by means of dashes of different colours and thicknesses (depending on the assumed depth of the structures). These indications, transferred on maps, can serve as a starting point for extensive analyses of the entire site and its surrounding area. The first non-invasive surveys carried out in Mustis have demonstrated the usefulness of magnetic and electric methods in mapping the preserved remains both inside and around the city. The obtained results enabled elaborating a strategy for the work to come. It is quite probable that the magnetic method will prove capable of indicating places where vestiges of constructions are preserved, while the electric method will determine the depth and conditions of deposition of localised structures.

APA, Harvard, Vancouver, ISO, and other styles

47

Itkis, Sonia, Boris Khesin, Lev Eppelbaum, and Hamudi Khalailyc. "The Natufian site of Eynan (Hula Valley, northern Israel): Magnetic prospecting reveals new features." Israel Journal of Earth Sciences 52, no. 3-4 (March 1, 2003): 209–19. http://dx.doi.org/10.1560/led3-7a75-7m3j-46mp.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Balk, P. I., and A. S. Dolgal. "A minimax approach to the solution of inverse problems of gravity and magnetic prospecting." Doklady Earth Sciences 462, no. 2 (June 2015): 648–52. http://dx.doi.org/10.1134/s1028334x15060173.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

IMAZU, Takahisa, Katsuyuki TANAKA, Daisuke MATSUO, and Haruo KOTERA. "1506 Studies on Mine Detecting Rover : Visualization of Metals Laying Underground by Magnetic Prospecting." Proceedings of Conference of Kansai Branch 2005.80 (2005): _15–11_—_15–12_. http://dx.doi.org/10.1299/jsmekansai.2005.80._15-11_.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Tsokas, Gregory N., and Constantinos B. Papazachos. "Two‐dimensional inversion filters in magnetic prospecting: Application to the exploration for buried antiquities." GEOPHYSICS 57, no. 8 (August 1992): 1004–13. http://dx.doi.org/10.1190/1.1443311.

Full text

Abstract:

The magnetic total field anomaly is considered as the convolution of two analytically determined functions. One of them is chosen such that it modifies the amplitude of the anomaly while the other controls the anomaly pattern. Using the anomaly of vertical‐sided finite prisms, the inverse of the shape function is computed in the Wiener mode. This is an optimum filter operator, in the least‐square sense, to be convolved with the data. The majority of the structures which are the targets of exploration at archaeological sites can be represented as assemblages of vertical‐sided prisms. This fact motivates the selection of the basic model. On that basis the filtering scheme results in anomalies centered at the epicenter of the disturbing bodies, delineates their lateral extent fairly well, and gives a measure of their magnetization. Applications of synthetic and actual data clarify the merits and disadvantages of the technique.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!