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The validity of Q estimates from borehole data using spectral ratios

Mark Sams and David Goldberg
The validity of Q estimates from borehole data using spectral ratios
Geophysics (January 1990) 55 (1): 97-101

Abstract

The measurement from borehole sonic data of Q, the acoustic attenuation coefficient of an earth section, can be achieved in three ways: forward modeling (Chuen and Toksoez, 1981), spectral ratios (Gladwin and Stacey, 1974), and inversion (Cheng et al., 1986). The spectral-ratio technique has been applied to real data (Goldberg et al., 1985) but is unstable and not very reliable. Experiments have shown that the spectral-ratio technique applied to waveforms gives Q estimates which are lower than those measured from cores in the laboratory (Goldberg and Zinszner, 1989). We investigate this phenomenon using synthetic and real data.


ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 55
Serial Issue: 1
Title: The validity of Q estimates from borehole data using spectral ratios
Affiliation: Imp. Coll., Dep. Geol., London, United Kingdom
Pages: 97-101
Published: 199001
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 14
Accession Number: 1989-081247
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N25°02'05" - N25°02'07", W68°03'27" - W68°03'26"
Secondary Affiliation: Lamont-Doherty Geol. Obs., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 1989
Program Name: DSDPDeep Sea Drilling Project
Program Name: ODPOcean Drilling Program
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