Gravity and magnetic methods at the turn of the millennium

Geophysics ◽  
2001 ◽  
Vol 66 (1) ◽  
pp. 36-37 ◽  
Author(s):  
R. O. Hansen
Keyword(s):  
Turn Of The Millennium ◽  
Magnetic Methods ◽  
Maximum Value ◽  
Gravity And Magnetic ◽  
New Instrumentation ◽  
New Instruments

Innovation in the 1980s and 1990s has been dominated by new instrumentation. Only recently has processing and interpretation technology appeared which will extract the maximum value from the new instruments. In the following sections, the instrumentation advances are outlined. Processing and interpretation advances are sketched in the last section.

Applications of the gravity and magnetic methods

2013 ◽  
pp. 415-421
Author(s):  
William J. Hinze ◽  
Ralph R. B. von Frese ◽  
Afif H. Saad
Keyword(s):  
Magnetic Methods ◽  
Gravity And Magnetic

AEROMAGNETICS

Geophysics ◽  
1964 ◽  
Vol 29 (4) ◽  
pp. 482-516 ◽  
Author(s):  
M. S. Reford ◽  
J. S. Sumner
Keyword(s):  
Upper Mantle ◽  
Profile Analysis ◽  
Petroleum Exploration ◽  
Major Step ◽  
Metastable Helium ◽  
The Past ◽  
Magnetic Methods ◽  
Data Compilation ◽  
Proton Precession Magnetometer ◽  
New Instruments

The aeromagnetic method of geophysical surveying has been established in less than two decades as a powerful method in mining and petroleum exploration. Many economically important discoveries can either directly or indirectly be credited to the aeromagnetometer. Magnetic methods are most important in their assistance to geological reconnaissance and mapping. Also, deep crustal and upper‐mantle studies can be made from results. New instruments, the spin‐precession magnetometers, have come into being in the past five years. Included are the proton‐precession magnetometer, the alkali‐vapor rubidium and cesium instruments, and the metastable‐helium magnetometer. All of these devices have airborne capabilities, and their future use is destined to increase. Modern navigational and interpretational techniques have improved the usefulness of aeromagnetic surveying. Diurnal effects are corrected for and their behavior is becoming understood. Data compilation, the major step in the entire process between measurement and interpretation, is an involved routine, but can be automated with the aid of Doppler navigation and statistical techniques. Interpretative systems may be divided into qualitative inspection, profile analysis, and map methods. Numerous schemes have been proposed for analytic purposes and the principal methods are reviewed. Although much of the world has been covered by surveys, the program seems less than half done. With more emphasis on detailed surveys, comprehensive interpretation, and sensitive instruments, the future of aeromagnetics seems bright.

scholarly journals The technology of gold-containing concentrates recovery from the coal combustion products of the Yerkovetskoye brown coal deposit (the Amur Region, Russia)

2018 ◽  
Vol 56 ◽  
pp. 03003
Author(s):  
Anatoly Sorokin ◽  
Oleg Ageev
Keyword(s):  
Brown Coal ◽  
Coal Combustion ◽  
Native Gold ◽  
Combustion Products ◽  
Coal Combustion Products ◽  
Magnetic Methods ◽  
Technological Complex ◽  
Combustion Modes ◽  
Gravity And Magnetic ◽  
Brown Coals

The results of experimental research of the native gold distribution in the coal combustion products (CCP) obtained out of the brown coals of the Yerkovetskoye deposit combustion material in the experimental technological complex “Amur” (ETС “Amur”) are described in the article. The technology of the formation of slag, fly ash and products of wet cleaning of flue gases in the process of various combustion modes of coal combustion is examined. The possibility of the obtaining of enriched gold-containing concentrate by gravity and magnetic methods from the brown coal combustion products and extraction of native gold out of the concentrate is shown.

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