Description Format Details Source See Also Examples
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.
A dataframe with 141 observations on the following 4 variables:
freq
Frequencies, in Hertz.
P50
The 50th percentile (median) noise levels in decibels relative to 1 ε^2 / Hz.
P10
The 10th percentile noise levels also in decibels.
meter.type
The strainmeter design type.
and 2 attributes:
source.doi
The DOI number of the source publication.
generator
The structure of a function which will refresh the values from the supplemental files of the original publication.
NA
values in the series highlight frequency bands where the noise
levels are unreliable, due to a instrumental artifact.
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
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