Report

High-Resolution Surface-Wave Tomography from Ambient Seismic Noise

Science  11 Mar 2005:
Vol. 307, Issue 5715, pp. 1615-1618
DOI: 10.1126/science.1108339

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Abstract

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.

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