Bibliographic Citation
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| DOI | http://dx.doi.org/10.1029/95GL01323 |
| Title | Wavelet analysis of velocity dispersion of elastic interface waves propagating along a fracture |
| Creator/Author | Pyrak-Nolte, L.J. [Univ. of Notre Dame, IN (United States)] ; Nolte, D.D. [Purdue Univ., West Lafayette, IN (United States)] |
| Publication Date | 1995 Jun 01 |
| OSTI Identifier | OSTI ID: 150485 |
| Other Number(s) | Journal ID: GPRLAJ; ISSN 0094-8276; TRN: TRN: 95:005687-0001 |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Geophysical Research Letters; Journal Volume: 22; Journal Issue: 11; Other Information: PBD: 1 Jun 1995 |
| Subject | 58 GEOSCIENCES; SEISMIC WAVES; FREQUENCY ANALYSIS; WAVE PROPAGATION; VELOCITY; DISPERSION RELATIONS; GEOLOGIC FAULTS |
| Description/Abstract | A wavelet analysis is performed on seismic waveforms of elastic interface waves that propagate along a fracture. The wavelet analysis provides a direct quantitative measure of spectral content as a function of arrival time. The authors find that the spectral content of the interface wave signals is not stationary, but exhibits increasing frequency content for later arrival times, representing negative velocity dispersion. The dispersion increase from {minus}11 m/sec/MHz to {minus}116 m/sec/MHz as the stress on the fracture is increased from 3.5 kPa to 33 MPa. The negative velocity dispersion agrees with predictions from the displacement-discontinuity theory of the seismic response of fractures, and can be used to fit fracture stiffness. 16 refs., 3 figs., 1 tab. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: pp. 1329-1332 |
| System Entry Date | 2008 Feb 04 |
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Last Updated: 11/19/2009