Ground Roll As a Tool to Image Near-surface Anomaly
作者： Choon Byong Park , Richard D. Miller , Jianghai Xia
DOI: 10.1190/1.1820627
关键词: Acoustics 、 Anomaly (natural sciences) 、 Redundancy (information theory) 、 Geodesy 、 Data processing 、 Attenuation 、 Phase velocity 、 Data acquisition 、 Wavelength 、 Physics 、 Field (physics)
摘要: On an uncorrelated field record obtained using a monotonic sweep, ground roll is displayed in increasing or decreasing order of frequency with each well separated from all others. Phase velocity and attenuation characteristics contain the average elastic property nearsurface materials down to approximately half wavelength. An record, therefore, by itself can be associated two-dimensional display change near-surface property. Through redundancy data acquisition simple processing step, records transformed into stacked section that correlated directly image materials. This method effectively used detect anomalies various kinds.
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