title: High-resolution surface-wave tomography from ambient seismic noise.
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.
authors.affiliation: Center for Imaging the Earth's Interior, Department of Physics, University of Colorado at Boulder, Boulder, CO, USA. nshapiro@ciei.colorado.edu
authors.forename: Nikolai M
authors.initials: NM
authors.lastname: Shapiro
authors.forename: Michel
authors.initials: M
authors.lastname: Campillo
authors.forename: Laurent
authors.initials: L
authors.lastname: Stehly
authors.forename: Michael H
authors.initials: MH
authors.lastname: Ritzwoller