A map showing variation of Rayleigh wave group

A map showing variation of Rayleigh wave group

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Credit:
M.P. Moschetti, M.H. Ritzwoller, and N.M. Shapiro/IRIS Consortium

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The cumulative volume of seismic data archived at the IRIS Data Management Center, 2008

Description

A map showing variation of Rayleigh wave (a type of seismic surface wave) group velocity for 8 sec period vibrations derived from more than 60,000 measurements. By cross correlating up to three years of continuous data from 512 western U.S. stations, including the EarthScope USArray Transportable Array and regional seismic networks, inter-station propagation velocities for all available station pairs were recovered and inverted for regional velocity structure. Thick black lines define major tectonic province boundaries. (Image courtesy of M.P. Moschetti, M.H. Ritzwoller, and N.M. Shapiro.)

Date Taken: February 18, 2009
Photographer / Contributor: M.P. Moschetti, M.H. Ritzwoller, and N.M. Shapiro

This photo has been tagged with

Seismological_Grand_Challenges, Long_Range_Science_Plan,

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