psd (version 0.4-1)

hfsnm: Noise levels found in PBO strainmeter data at seismic frequencies.

Description

These values represent noise levels in high frequency data ($10^{-3} - 10$ Hz) from 2009, averaged over all stations in the Anza cluster of the Plate Boundary Observatory (PBO) borehole strainmeter network, and the UCSD-style longbase laser strainmeters.

source

Barbour, A. J., and Agnew, D. C. (2011), Noise Levels on Plate Boundary Observatory Borehole Strainmeters in Southern California, Bulletin of the Seismological Society of America, 101(5), 2453-2466, doi:10.1785/0120110062

Details

NA values in the series highlight frequency bands where the noise levels are unreliable, due to a instrumental artifact.

See Also

pspectrum, Tohoku, magnet

Examples

data(hfsnm)
str(hfsnm)
FUN <- attr(hfsnm, "generator")
try(dat <- FUN(molten=FALSE)) # may fail without library-access to BSSA
try(all.equal(dat[,1:4], hfsnm[,1:4]))