B054 sibley054bcn2008 Latitude 37.8602 Longitude -122.1995 Elevation 405.6 m Install Date 2008-08-21 Contents Of Tar files for year YYYY File Contents B054.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B054.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B054.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B054.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B054.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B054.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B054.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B054.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B054.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B054.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 = 325 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 34.830 0.000 0.00000 0.02594 0.000 0.00000 CH1 111.680 -4880.100 -0.00352 -0.00085 448.290 -0.00118 CH2 48.560 0.000 0.00000 0.00260 0.000 0.00000 CH3 56.930 0.000 0.00000 0.00314 0.000 0.00000 Detrend reference date /detrend_ref Barometric Response Gauge Response(ns/millibar) CH0 -6.3 CH1 -6.6 CH2 -6.4 CH3 -7.7 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -173.851 0.655 CH0 O1 -175.714 0.205 CH0 P1 -151.348 0.157 CH0 K1 93.226 0.143 CH0 N2 -100.896 0.109 CH0 S2 119.645 0.569 CH1 M2 29.700 3.629 CH1 O1 -25.516 2.310 CH1 P1 -31.369 0.603 CH1 K1 -31.945 2.377 CH1 N2 52.594 0.630 CH1 S2 32.691 1.454 CH2 M2 -139.784 5.202 CH2 O1 158.200 3.052 CH2 P1 158.111 1.492 CH2 K1 147.525 3.710 CH2 N2 -122.903 1.091 CH2 S2 -173.245 1.843 CH3 M2 -140.728 7.004 CH3 O1 161.249 3.723 CH3 P1 160.868 1.712 CH3 K1 147.881 4.297 CH3 N2 -119.042 1.400 CH3 S2 -171.606 2.647 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 = 325 ISOTROPIC 0.29629665 0.51851812 0.29629618 0.22222238 ISOTROPIC -0.00610870 0.36474335 -0.13978836 -0.21884629 ISOTROPIC -0.39191574 0.06431703 0.36618819 -0.03858948 Tue Sep 26 16:25:33 MDT 2017