High-Resolution Surface-Wave Tomography from Ambient Seismic Noise.
Shapiro, Nikolai M. 1*; Campillo, Michael 2; Stehly, Laurent 2; Ritzwoller, Michael H. 1
[Report] Science. Mars Express: Mapping With OMEGA. 307(5715):1615-1618, March 11, 2005.

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Cross-correlation of 1 month of ambient seismic noise recorded at USArray stations in California yields hundreds of short-period surface-wave group-speed measurements on interstation paths. We used these measurements to construct tomographic images of the principal geological units of California, with low-speed anomalies corresponding to the main sedimentary basins and high-speed anomalies corresponding to the igneous cores of the major mountain ranges. This method can improve the resolution and fidelity of crustal images obtained from surface-wave analyses.

Copyright (C) 2005 by the American Association for the Advancement of Science