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Title: Attenuation of P-Waves by Wave-Induced Fluid Flow

Abstract

Analytical expressions for three P-wave attenuation mechanisms in rocks are given and numerically-compared. The mechanisms are: (1) Biot loss, in which flow occurs at the scale of the wavelength between the peaks and troughs of a P wave; (2) squirt loss, in which flow occurs at the grain scale between microcracks the grains and the adjacent pores; and (3) mesoscopic loss, in which flow occurs at intermediate scales between the various lithological bodies that are present in an averaging volume of earth material. Each mechanism is of importance over different frequency bands. Typically, Biot loss is only important at the highest of ultrasonic frequencies (> 1 MHz), squirt-loss (when it occurs) is important in the range of 10 kHz to 1 MHz, while mesoscale loss dominates at the lower frequencies (<10 kHz) employed in seismology.

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15013446
Report Number(s):
UCRL-JC-147806
TRN: US200601%%408
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Second Biot Conference on Poromechanics, Grenoble, France, Aug 26 - Aug 28, 2002
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 58 GEOSCIENCES; ATTENUATION; FLUID FLOW; P WAVES; SEISMOLOGY; ULTRASONIC WAVES; WAVELENGTHS

Citation Formats

Pride, S R, and Berryman, J G. Attenuation of P-Waves by Wave-Induced Fluid Flow. United States: N. p., 2002. Web.
Pride, S R, & Berryman, J G. Attenuation of P-Waves by Wave-Induced Fluid Flow. United States.
Pride, S R, and Berryman, J G. Fri . "Attenuation of P-Waves by Wave-Induced Fluid Flow". United States. https://www.osti.gov/servlets/purl/15013446.
@article{osti_15013446,
title = {Attenuation of P-Waves by Wave-Induced Fluid Flow},
author = {Pride, S R and Berryman, J G},
abstractNote = {Analytical expressions for three P-wave attenuation mechanisms in rocks are given and numerically-compared. The mechanisms are: (1) Biot loss, in which flow occurs at the scale of the wavelength between the peaks and troughs of a P wave; (2) squirt loss, in which flow occurs at the grain scale between microcracks the grains and the adjacent pores; and (3) mesoscopic loss, in which flow occurs at intermediate scales between the various lithological bodies that are present in an averaging volume of earth material. Each mechanism is of importance over different frequency bands. Typically, Biot loss is only important at the highest of ultrasonic frequencies (> 1 MHz), squirt-loss (when it occurs) is important in the range of 10 kHz to 1 MHz, while mesoscale loss dominates at the lower frequencies (<10 kHz) employed in seismology.},
doi = {},
url = {https://www.osti.gov/biblio/15013446}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {3}
}

Conference:
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