B206 canyon206bwy2008 Latitude 44.7177 Longitude -110.5117 Elevation 2399.5 m Install Date 2008-06-27 Contents Of Tar files for year YYYY File Contents B206.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B206.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B206.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B206.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B206.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B206.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B206.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B206.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B206.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B206.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 = 181 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 -2.980 124.660 -0.00690 0.00160 -100.590 -0.00397 CH1 -7.520 0.000 0.00000 0.03030 0.000 0.00000 CH2 2.900 0.000 0.00000 0.01440 0.000 0.00000 CH3 5.960 0.000 0.00000 0.03890 0.000 0.00000 Detrend reference date 2008-06-27T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -4.3 CH1 -2.4 CH2 -5.0 CH3 -5.3 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 8.332 12.555 CH0 O1 2.255 3.045 CH0 P1 2.294 1.273 CH0 K1 7.342 2.965 CH0 N2 6.502 2.285 CH0 S2 6.520 6.302 CH1 M2 18.727 13.104 CH1 O1 -20.850 9.538 CH1 P1 -19.801 2.732 CH1 K1 -17.618 10.848 CH1 N2 21.505 2.473 CH1 S2 17.031 5.711 CH2 M2 -143.576 9.426 CH2 O1 63.536 3.058 CH2 P1 95.405 1.619 CH2 K1 60.916 4.959 CH2 N2 -140.968 1.864 CH2 S2 -145.811 3.922 CH3 M2 -98.111 3.749 CH3 O1 101.483 3.293 CH3 P1 105.155 1.819 CH3 K1 97.412 4.807 CH3 N2 -100.367 0.884 CH3 S2 -73.613 1.444 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 = 181 ISOTROPIC 0.29629662 0.51851831 0.29629622 0.22222218 ISOTROPIC -0.37462192 0.17387976 0.30506940 -0.10432725 ISOTROPIC -0.11529704 -0.32701684 0.24610307 0.19621081 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.456 1.052 0.689 0.314 KH2013 -0.632 0.329 0.524 -0.295 KH2013 0.444 -0.082 0.69 0.792 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