DOI: 10.1002/2016GL069219
论文题名: The effect of crack orientation on the nonlinear interaction of a P wave with an S wave
作者: TenCate J.A. ; Malcolm A.E. ; Feng X. ; Fehler M.C.
刊名: Geophysical Research Letters
ISSN: 0094-9684
EISSN: 1944-9415
出版年: 2016
卷: 43, 期: 12 起始页码: 6146
结束页码: 6152
语种: 英语
英文关键词: imaging
; microcrack orientation
; nonlinear elasticity
Scopus关键词: Cracks
; Imaging techniques
; Seismic waves
; Shear waves
; Crack orientations
; Elastic non-linearity
; High amplitudes
; Low-amplitude
; Non-linear response
; Nonlinear elasticity
; Nonlinear interactions
; Nonlinear signals
; Microcracks
; amplitude
; anisotropy
; elasticity
; fracture orientation
; imaging method
; joint
; microcrack
; nonlinearity
; P-wave
; rock property
; S-wave
; signal
英文摘要: Cracks, joints, fluids, and other pore-scale structures have long been hypothesized to be the cause of the large elastic nonlinearity observed in rocks. It is difficult to definitively say which pore-scale features are most important, however, because of the difficulty in isolating the source of the nonlinear interaction. In this work, we focus on the influence of cracks on the recorded nonlinear signal and in particular on how the orientation of microcracks changes the strength of the nonlinear interaction. We do this by studying the effect of orientation on the measurements in a rock with anisotropy correlated with the presence and alignment of microcracks. We measure the nonlinear response via the traveltime delay induced in a low-amplitude P wave probe by a high-amplitude S wave pump. We find evidence that crack orientation has a significant effect on the nonlinear signal. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977586657&doi=10.1002%2f2016GL069219&partnerID=40&md5=0f0c52a5ebeba2b5b18f744fda9061b5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10647
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geophysics Group, Earth and Environmental Sciences Division, Los Alamos National Lab, Los Alamos, NM, United States
Recommended Citation:
TenCate J.A.,Malcolm A.E.,Feng X.,et al. The effect of crack orientation on the nonlinear interaction of a P wave with an S wave[J]. Geophysical Research Letters,2016-01-01,43(12).