B928 bamfld928bbc2007 Latitude 48.8337 Longitude -125.1345 Elevation 9.5 m Install Date 2007-11-28 Contents Of Tar files for year YYYY File Contents B928.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B928.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B928.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B928.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B928.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B928.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B928.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B928.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B928.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B928.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 = 284.1 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 -82.200 112.760 -0.00432 -0.04515 8.751 0.00059 CH1 149.710 -256.930 -0.00421 0.01048 -0.000 0.00000 CH2 -94.140 92.417 -0.00064 -0.01085 0.000 0.00000 CH3 -23.610 37.201 -0.00170 -0.01321 -74.967 -0.00493 Detrend reference date 2007-11-28T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -2.3 CH1 -2.8 CH2 -4.1 CH3 -2.5 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -167.495 96.712 CH0 O1 56.399 28.213 CH0 P1 50.760 13.964 CH0 K1 47.396 45.135 CH0 N2 -145.541 20.118 CH0 S2 165.733 29.523 CH1 M2 -162.238 70.818 CH1 O1 68.672 20.069 CH1 P1 64.967 9.731 CH1 K1 59.262 30.732 CH1 N2 -139.939 15.684 CH1 S2 170.592 19.173 CH2 M2 -169.183 101.628 CH2 O1 93.481 25.113 CH2 P1 82.819 11.687 CH2 K1 72.132 37.188 CH2 N2 -146.125 21.160 CH2 S2 161.375 31.305 CH3 M2 -166.969 72.563 CH3 O1 63.852 20.693 CH3 P1 57.246 10.482 CH3 K1 53.001 33.764 CH3 N2 -142.717 14.980 CH3 S2 161.493 22.183 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 = 284.1 ISOTROPIC 0.29629664 0.51851815 0.29629620 0.22222233 ISOTROPIC 0.38703733 -0.01163618 -0.38238206 0.00698090 ISOTROPIC -0.06194517 0.37018770 -0.08612966 -0.22211286 Fri May 19 19:47:35 MDT 2017