Raw strain data will be available in Standard for the Exchange of Earthquake Data (SEED) format. The SEED files will contain the strain measurements and instrument response information. Documentation and software to manipulate SEED files can be found at Northern California Earthquake Data Center (NCEDC) and at the IRIS Data Management Center (DMC)
Processed borehole strainmeter data products are produced by UNAVCO's Borehole Strainmeter Analysis Center in Socorro, New Mexico, while laser strainmeter products are produced at the University of California, San Diego. These products include cleaned and scaled strain time series, correction series, and ancillary information.
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Gladwin Tensor Strainmeters (GTSMs), the instruments that will be used by PBO, have a precision of 1 part per billion over short periods. The GTSM uses differential capacitive plate transducers to measure change in the borehole diameter. As the borehole deforms the plates move relative to each other causing a change in capacitance proportional to the change in distance.
