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- W4311099380 endingPage "699" @default.
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- W4311099380 abstract "SUMMARY Passive seismic methods in highly populated urban areas have gained much attention from the geophysics and civil engineering communities. Linear arrays are usually deployed for passive surface wave investigations because of their high convenience, and passive surface wave imaging methods commonly used for linear arrays can be grouped as non-interferometric methods (e.g. passive multichannel analysis of surface wave, refraction microtremor) and interferometric methods (e.g. multichannel analysis of passive surface waves and spatial autocorrelation). It is well known that the seismic interferometry method is able to retrieve Green’s function between inter-station pairs based on passive seismic data and that is how interferometric methods work. Although non-interferometric methods are also popular and effective in near-surface seismic imaging, particularly in the geotechnical industry, there is no theoretical proof to clarify the accuracy and/or the bias of these methods. In this study, we use numerical derivations and simulations to demonstrate the underlying physics for both non-interferometric and interferometric methods, under two common noise source environments including a homogeneous source distribution and a dominant in-line source distribution. We also prove the strength of interferometric methods for accurate dispersion imaging over the non-interferometric methods, and provide a way to estimate the biases in non-interferometric measurements. Finally, we present comprehensive comparisons between different passive surface wave methods with three typical field examples considering various observation systems." @default.
- W4311099380 created "2022-12-23" @default.
- W4311099380 creator A5006144932 @default.
- W4311099380 creator A5061785448 @default.
- W4311099380 creator A5074813047 @default.
- W4311099380 creator A5083312047 @default.
- W4311099380 date "2022-11-29" @default.
- W4311099380 modified "2023-10-13" @default.
- W4311099380 title "Comparisons between non-interferometric and interferometric passive surface wave imaging methods—towards linear receiver array" @default.
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