International Federation of Digital Seismograph Networks

1J (1996-2016): Long Valley Caldera Full Waveform Tomography

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FDSN Network Information

FDSN code 1J (1996-2016) Operated by
  • USGS Menlo Park
Network name Long Valley Caldera Full Waveform Tomography (LVCFWI) Deployment region United States of America
Start year 1996 End year 2016
Short description

Data described here was used in Flinders et al. 2018 as source data for a full waveform ambient noise tomography project centered around the Long Valley Caldera, California. Source seismograms were Rayleigh-wave ambient noise cross-correlations, derived from all seismic stations within 150 km of the caldera over the past 26 years, supplemented with Rayleigh-wave records from eleven large regional earthquakes (Figure 1, Data Table 1/2). The compiled data set includes Empirical Green’s Functions (EGF) from the ambient noise cross-correlations and earthquake seismograms. Earthquake records have had their instrument responses removed and bandpass filtered over the range 1-40s. Only waveforms used in at least one iteration for at least one tomographic frequency band are included; 2396 EGFs and 141 earthquake seismograms.

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