B067 stoney067bcn2007 Latitude 36.765000 Longitude -121.5655 Elevation 126.2 m Install Date 2007-06-12 Contents Of Tar files for year YYYY File Contents B067.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B067.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B067.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B067.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B067.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B067.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B067.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B067.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B067.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B067.YYYY.xml.2Ene.ER2010.txt.gz Processed engineering shear strain, Roeloffs [2010], calibration Description of Level 2 Borehole Strainmeter ASCII files. Column 1 Description of data, gauge0, gauge1 etc Column 2 Date, YYYY-MM-DDTHH:mm:ss Column 3 Day of year Column 4 Modified Julian Date Column 5 Strain (microstrain). No offsets, trends, tides or barometric corrections have been applied. Column 6 Running sum of offsets Column 7 Strain data quality flag (g=good, b=bad, m=missing) Column 8 Tidal correction (microstrain) Column 9 Borehole trend correction (microstrain) Column 10 Barometric pressure correction (microstrain) Column 11 Barometric pressure data quality flag (g=good, b=bad, m=missing, i=interpolated) Column 12 Level, quality (2a= rapid processing, 2b=post processed) Column 13 Version, data generation date Column 14 Barometeric pressure (millibars) To produce strain data with offsets, tides, trends, tides and barometric pressure effect removed use Final_Strain=Column5+Column6-Column8-Column9-Column10 Processing Information Manufacturer: GTSM Technologies Manufacturer Gauge Scale Factor: 0.05 nanostrain per digital count Manufacturer Areal Scale Factor: 1.5 Manufacturer Shear Scale Factor: 3.0 Manufacturer Gauge Weightings: CH0=1, CH1=1, CH2=1, CH3=1 CH0 Orientation recorded in field = 311.6 degrees east of north Borehole Trend Models, calculated in days, y=F+A1*exp(T1*t)+M*t+A2*exp(T2*t) Gauge F A1 T1 M A2 T2 CH0 13.270 -136.040 -0.02278 -0.01379 63.861 -0.00126 CH1 -126.378 35.875 -0.00583 -0.00595 122.540 -0.00075 CH2 -137.734 0.000 0.00000 -0.01219 131.910 -0.00117 CH3 -154.362 0.000 0.00000 -0.00126 207.010 -0.00102 Detrend reference date 2007-06-12T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -3.1 CH1 -2.5 CH2 -2.1 CH3 -2.2 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 33.996 17.821 CH0 O1 -45.625 7.512 CH0 P1 -44.716 3.259 CH0 K1 -53.405 9.014 CH0 N2 41.359 3.744 CH0 S2 32.740 7.049 CH1 M2 62.365 2.606 CH1 O1 -13.355 4.327 CH1 P1 -29.877 1.771 CH1 K1 -34.476 4.372 CH1 N2 118.923 1.059 CH1 S2 -59.896 0.187 CH2 M2 -45.639 8.880 CH2 O1 64.338 5.451 CH2 P1 62.720 2.580 CH2 K1 66.780 7.933 CH2 N2 -51.939 2.587 CH2 S2 -6.609 4.760 CH3 M2 -0.094 12.202 CH3 O1 6.414 2.547 CH3 P1 -0.704 1.692 CH3 K1 25.151 3.517 CH3 N2 -15.188 2.514 CH3 S2 13.082 7.310 Strain Matrices To Compute Areal and Shear Strain from Gauge Strain Manufacturer's Isotropic Strain Matrix, C=1.5, D=3.0, Gauge Weights=1, Orientation = 311.6 ISOTROPIC 0.29629697 0.51851820 0.29629591 0.22222226 ISOTROPIC 0.17125361 0.29656541 -0.28987919 -0.17793983 ISOTROPIC -0.35257254 0.22186315 0.26382701 -0.13311762 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.658 1.18 0.702 0.35 KH2013 0.37 0.41 -0.347 -0.201 KH2013 -0.34 0.535 0.369 -0.18 Reference: Table 2. Hodgkinson, K., J. Langbein, B. Henderson, D. Mencin, and A. Borsa (2013), Tidal calibration of plate boundary observatory borehole strainmeters, J. Geophys. Res. Solid Earth, 118, 447–458, doi:10.1029/2012JB009651. Wed Dec 27 11:27:32 UTC-06:00 2023