- journal_title：Geophysics
- Contributor：Gang Tian ; Don W. Steeples ; Jianghai Xia ; Kyle T. Spikes
- Publisher：Society of Exploration Geophysicists
- Date：2003-
- Format：text/html
- Language：en
- Identifier：10.1190/1.1635043
- journal_abbrev：Geophysics
- issn：0016-8033
- volume：68
- issue：6
- firstpage：1906
- section：ENGINEERING AND ENVIRONMENTAL GEOPHYSICS
The multichannel analysis of surface wave (MASW) method (Park et al., 1999; Xia et al., 1999, 2002a,b) is a relatively new technique. This technique consists (1) acquiring wide-band (∼2 to ∼100 Hz), high-frequency ground roll using a multichannel recording system; (2) creating efficient and accurate algorithms designed to extract and analyze 1D multimodal Rayleigh-wave dispersion curves from ground roll using a basic, robust, and pseudoautomated processing sequence; (3) developing stable and efficient algorithms (Xia et al., 1999) incorporating the minimum number of assumptions necessary to obtain 1D near-surface S-wave velocity profiles using the generalized linear inversion (GLI) method (Xia et al., 1999; Tian and Goulty, 1997); and (4) combining a standard common midpoint (CMP) roll-along acquisition format (Mayne, 1962) with surface-wave inversion of each shot gather to generate a cross-section of S-wave velocity (Xia et al., 1998; Miller et al., 1999). Based on published results (Xia et al., 2002a,b), when calculated with high accuracy, the fundamental mode phase velocities generally can provide reliable S-wave velocities with ±15% relative error.