--> Seismic Interferometry, A Novel Exploration Tool, by Stan Sansone; #90040 (2005)
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Previous HitSeismicNext Hit Interferometrypp, A Novel Exploration Tool

Stan Sansone

Zero Previous HitphaseNext Hit Previous HitseismicNext Hit data has been, and is today, a goal geophysicists find an easy and adequate reference when interpreting Previous HitseismicNext Hit data. A patented and patent pending Previous HitseismicNext Hit exploration approach utilizing a technique described as Dual Frequency Previous HitSeismicNext Hit Interferometry© (1991-2004 U.S Patents 5,231,252, 5,335,208, 5,545,858 & Patents Pending) to collect and analyze exploration Previous HitseismicNext Hit data information is deployed and analyzed. Field experiments performed in 1991 and 1997 using receiver platforms and a two-transducer receiver to mimic a two-beam interferometer indicate that an analog earth propagating Previous HitseismicNext Hit information can be split using the two different transducers at some common point of observation. Previous HitSeismicNext Hit information recorded in such a way show remarkable sensitivities, as evidenced by the subtle trace and wavelet variations. Variations of 1 Hz, or a minuet fraction of the harmonic, are measurable. Variations between the two recorded wave fronts or beams are very subtle, and can lead to a diagnostic measure of Previous HitphaseNext Hit information. Results indicate that principles of Interferometry, so valuable in material analysis, structural analysis, microscopy and surveying in the optical part of the wave spectrum may prove to be just as valuable in the acoustic and Previous HitseismicNext Hit portions of the wave spectrum. Interferometry is a tool whereby a wavefront is split using division of wavefront or division of amplitude. Interference was first observed by Robert Hooke (1635-1703) and studied by Newton (Newton’s rings). Interferometry and more specifically the Interferometer was discovered by Michelson in 1987 and as a result became America’s first Nobel laureate in physics. Interferometer is an instrument that utilizes interference phenomena for precise determinations of wavelength, frequency, spectral fine structure, indices of refraction and very small displacements. Interferometry also provides a measure of Previous HitphaseNext Hit and is suggested to be a fundamental and arguably the most important parameter potentially containing more information than the parameters of amplitude and frequency. Amplitude is used as a direct detection tool (Chevron, Ostrander). Likewise, frequency is also used as a direct detection tool (BP, Partyka). It is suggested that Previous HitphaseNext Hit may also be used as a direct detection tool, Previous HitPhaseTop Versus Offset-PVO©.