B086 santar086bcs2006 Latitude 33.5575 Longitude -116.5310 Elevation 1392 m Install Date 2006-06-10 Contents Of Tar files for year YYYY File Contents B086.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B086.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B086.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B086.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B086.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B086.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B086.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B086.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B086.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B086.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: 0.1 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 = 316.5 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 -25.160 33.270 -0.00196 -0.00219 0.000 0.00000 CH1 -29.820 38.903 -0.00164 0.00094 0.000 0.00000 CH2 -16.330 20.740 -0.00185 -0.00180 0.000 0.00000 CH3 9.120 -21.132 -0.00125 -0.00220 0.000 0.00000 Detrend reference date 2006-06-17T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -2.2 CH1 -2.8 CH2 -2.1 CH3 -3.2 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -3.173 26.057 CH0 O1 -14.429 6.565 CH0 P1 -5.042 1.492 CH0 K1 1.448 7.058 CH0 N2 -3.134 6.327 CH0 S2 -4.480 11.174 CH1 M2 119.182 5.080 CH1 O1 -14.916 6.037 CH1 P1 -36.421 0.598 CH1 K1 -2.168 5.952 CH1 N2 133.732 1.592 CH1 S2 149.960 3.184 CH2 M2 5.477 7.150 CH2 O1 67.121 3.682 CH2 P1 130.899 2.402 CH2 K1 101.521 6.535 CH2 N2 -26.419 0.785 CH2 S2 24.413 4.318 CH3 M2 -14.250 16.770 CH3 O1 131.682 2.672 CH3 P1 151.477 3.267 CH3 K1 121.850 6.190 CH3 N2 -18.992 4.182 CH3 S2 -5.183 7.696 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 = 316.5 ISOTROPIC 0.29629630 0.51851852 0.29629630 0.22222222 ISOTROPIC 0.10875497 0.33001153 -0.24075958 -0.19800692 ISOTROPIC -0.37659637 0.16812796 0.30934518 -0.10087678 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.738 0.753 0.599 -0.085 KH2013 0.051 0.292 -0.113 -0.279 KH2013 -0.291 0.33 0.544 -0.167 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