B093 trippf093bcs2007 Latitude 33.5937 Longitude -116.7638 Elevation 1244 m Install Date 2007-09-20 Contents Of Tar files for year YYYY File Contents B093.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B093.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B093.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B093.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B093.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B093.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B093.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B093.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B093.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B093.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 = 339 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 22.130 -22.513 -0.00071 0.00099 0.000 0.00000 CH1 -70.490 133.410 -0.00333 -0.00125 0.000 0.00000 CH2 82.640 -350.210 -0.00619 -0.00814 0.000 0.00000 CH3 64.010 -3297.900 -0.01036 -0.01305 0.000 0.00000 Detrend reference date 2007-09-20T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -4.2 CH1 -4.2 CH2 -4.8 CH3 -3.9 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -77.066 3.495 CH0 O1 -173.634 3.206 CH0 P1 173.239 1.444 CH0 K1 172.138 3.485 CH0 N2 -37.222 1.130 CH0 S2 -114.382 0.933 CH1 M2 45.107 4.825 CH1 O1 -14.841 7.487 CH1 P1 -8.933 3.663 CH1 K1 -24.601 8.277 CH1 N2 74.802 1.001 CH1 S2 50.325 1.544 CH2 M2 167.556 5.998 CH2 O1 147.854 1.745 CH2 P1 109.276 0.621 CH2 K1 176.836 2.807 CH2 N2 177.388 1.935 CH2 S2 148.025 2.683 CH3 M2 -16.016 4.024 CH3 O1 130.789 0.922 CH3 P1 95.759 0.870 CH3 K1 146.001 1.852 CH3 N2 -29.739 0.875 CH3 S2 17.703 1.843 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 = 339 ISOTROPIC 0.29629677 0.51851759 0.29629635 0.22222263 ISOTROPIC -0.18938683 0.35224401 0.04848927 -0.21134644 ISOTROPIC -0.34317325 -0.11444757 0.38895144 0.06866939 Hodgkinson et al. (2013) Tidal Calibration KH2013 -1.605 0.565 -1.512 2.433 KH2013 0.306 0.44 0.405 -0.946 KH2013 -1.101 -0.139 0.834 -0.078 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