B082 pathfin82bcs2006 Latitude 33.59818 Longitude -116.596 Elevation 1374.8 m Install Date 2006-06-10 Contents Of Tar files for year YYYY File Contents B082.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B082.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B082.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B082.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B082.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B082.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B082.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B082.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B082.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B082.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 = 324.8 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 -58.990 92.899 -0.00238 -0.01785 0.000 0.00000 CH1 -49.820 56.756 -0.00102 0.00271 0.000 0.00000 CH2 -68.950 99.961 -0.00212 -0.00768 0.000 0.00000 CH3 -68.360 90.852 -0.00182 -0.00246 0.000 0.00000 Detrend reference date 2006-06-10T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 0.0 CH1 -3.3 CH2 -3.4 CH3 -3.7 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -5.991 26.508 CH0 O1 4.187 5.327 CH0 K1 16.395 6.364 CH0 N2 -9.333 5.676 CH0 S2 -5.732 12.862 CH1 M2 10.830 17.488 CH1 O1 -15.073 12.672 CH1 K1 -16.427 15.689 CH1 N2 15.221 3.867 CH1 S2 7.517 7.149 CH2 M2 139.528 5.570 CH2 O1 32.201 3.102 CH2 K1 37.009 2.180 CH2 N2 159.845 1.995 CH2 S2 129.022 3.231 CH3 M2 -8.249 7.017 CH3 O1 102.074 3.154 CH3 K1 117.890 4.267 CH3 N2 -35.448 1.156 CH3 S2 9.562 4.012 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 = 324.8 ISOTROPIC 0.00000000 0.66666667 0.00000000 0.66666667 ISOTROPIC 0.00000000 0.36259808 -0.13896370 -0.22363438 ISOTROPIC 0.00000000 -0.12911537 0.75715367 -0.62803830 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.338 0.64 0.496 0.265 KH2013 -0.276 0.266 0.156 -0.212 KH2013 -0.284 0.085 0.762 0.28 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