Physical Principles of Exploration Methods: An Introductory Text for Geology and Geophysics Students |
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Page 5
... variations in naturally produced fields by introducing a suitable exploring instrument ( e.g. gravimeter or ... variation of a stationary ( non time - varying relative to the duration of the survey ) field , an example being the use of ...
... variations in naturally produced fields by introducing a suitable exploring instrument ( e.g. gravimeter or ... variation of a stationary ( non time - varying relative to the duration of the survey ) field , an example being the use of ...
Page 82
... variations in order to see the short wavelength variations more easily . It is important to realize that the method , and indeed any method of filtering , does not add any information that is not present in the original data ; its use ...
... variations in order to see the short wavelength variations more easily . It is important to realize that the method , and indeed any method of filtering , does not add any information that is not present in the original data ; its use ...
Page 92
... variation , lunar variation , 27 day solar variation , annual variation , and groups of magnetic storms which have an 11.5 or 23 year cycle . In general , in a typical magnetic survey the only variations of concern are bays , diurnal ...
... variation , lunar variation , 27 day solar variation , annual variation , and groups of magnetic storms which have an 11.5 or 23 year cycle . In general , in a typical magnetic survey the only variations of concern are bays , diurnal ...
Contents
Electrical Properties Of Rocks | 7 |
SELF POTENTIAL OR SPONTANEOUS POLARIZATION | 31 |
INDUCED POLARIZATION | 43 |
Copyright | |
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Physical Principles of Exploration Methods: An Introductory Text for Geology ... A. E. Beck No preview available - 1981 |
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amplitude apparent resistivity atoms axis body borehole channel coils component Compton effect Compton scatter conductivity conductor constant current electrodes current flow decay density depth detector dip angle dipole direction discontinuity distance earth effects electrical electrical resistivity electromagnetic method energy equation exploration ferrimagnetic filter frequency gamma ray geoid geological geometry geophone Geophysics gravimeter gravity ground hole horizontal hydrogen induced induced polarization interpretation ions magnetic field magnetometer mass measured medium minerals mutual inductance neutrons obtained orebody oxidation P₁ phase photon plane poles positive potential electrodes precession primary field profiling ratio Rayleigh wave reference ellipsoid reflection refraction relative rock Schlumberger Schlumberger array secondary field seismic seismology separation shot point shown in Figure signal sonde spontaneous polarization subsurface conductors surface survey techniques Thorium transmitter typical Uranium usually variations vector velocity vertical voltage weathered layer Y-ray zero