- journal_title：The Leading Edge
- Contributor：Jianghai Xia ; Chao Shen ; Yixian Xu
- Publisher：Society of Exploration Geophysicists
- Date：2013-06-01
- Format：text/html
- Language：en
- Identifier：10.1190/tle32060612.1
- journal_abbrev：The Leading Edge
- issn：1070-485X
- volume：32
- issue：6
- firstpage：612
- section：Special section: Nonreflection seismic and inversion of surface and guided waves
Shear (S)-wave velocities of near-surface materials can be derived from inverting the dispersive phase velocity of high-frequency (≥ 2 Hz) surface (Rayleigh and/or Love) waves (e.g., Song et al., 1989). Multichannel analysis of surface waves (MASW) uses phase information of high-frequency Rayleigh waves recorded on vertical component geophones to determine S-wave velocities (Miller et al., 1999). Multichannel analysis of Love waves (MALW) uses phase information of high-frequency Love waves recorded on horizontal (perpendicular to the direction of wave propagation) component geophones to determine S-wave velocities (Xia, 2012b). Both MASW and MALW possess stable and efficient inversion algorithms to invert phase velocities of surface waves but MALW has some attractive advantages: (1) Love-wave dispersion curves are simpler than those of Rayleigh waves; (2) dispersion images of Love-wave energy have a higher signal-to-noise ratio and are more focused than those generated from Rayleigh waves; and (3) inversion of Love-wave dispersion curves is less dependent on initial models and more stable than from Rayleigh waves.