Synchronizing seismic networks with ambient noise

Details Synchronizing seismic networks with ambient noise Synchronizing seismic networks with ambient noise

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008geoji.174..966s&link_type=abstract

Geophysical Journal International, Volume 174, Issue 15, pp. 966-970.

Astronomy and Astrophysics

Astronomy

3

Time Series Analysis, Interferometry, Volcano Seismology, Wave Scattering And Diffraction, Volcano Monitoring

Scientific paper

The technique of retrieving Green's functions by pairwise correlation of a random wavefield is used to estimate the stability of the timing system of a seismic network. The method is demonstrated with data from a network consisting of stations with four independent clocks and GPS-receivers. For a two years period, daily measurements of the timing error of each of the four systems are obtained. These measurements can be used to correct the timing of the data in periods without GPS reception. The accuracy of this method can exceed the precision of the internal station clocks already after a single day of uncorrected drift.

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