B007 ShoresSO3BWA2005 Latitude 48.057577 Longitude -123.504113 Elevation 293.0 m Install Date 2005-07-23 Contents Of Tar files for year YYYY File Contents B007.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B007.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B007.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B007.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B007.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B007.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B007.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B007.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B007.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B007.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 = 193.0 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 -29.390 30.077 -0.00078 -0.00460 0.000 0.00000 CH1 19.840 -18.335 -0.00412 -0.00089 0.000 0.00000 CH2 -41.620 26.669 -0.00151 -0.01439 9.450 0.00029 CH3 -18.020 23.828 -0.00026 -0.00414 0.000 0.00000 Detrend reference date 2005-07-23T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -5.3 CH1 -6.6 CH2 -5.8 CH3 -4.5 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -78.081 16.476 CH0 O1 -140.070 3.552 CH0 P1 173.277 3.342 CH0 K1 -177.509 11.439 CH0 N2 -72.222 4.520 CH0 S2 -40.846 5.302 CH1 M2 91.032 15.821 CH1 O1 12.878 6.759 CH1 P1 25.922 3.988 CH1 K1 17.026 12.024 CH1 N2 86.392 2.088 CH1 S2 76.716 9.678 CH2 M2 1.913 5.653 CH2 O1 -7.001 2.017 CH2 P1 4.624 0.722 CH2 K1 -22.095 3.765 CH2 N2 76.929 1.809 CH2 S2 -105.329 3.903 CH3 M2 -68.862 12.899 CH3 O1 -146.309 2.757 CH3 P1 -170.209 2.302 CH3 K1 -164.326 7.349 CH3 N2 -64.195 1.893 CH3 S2 -84.742 6.445 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 = 193.0 ISOTROPIC 0.29630000 0.51850000 0.29630000 0.22220000 ISOTROPIC -0.38910000 0.02580000 0.37880000 -0.01550000 ISOTROPIC 0.04700000 -0.36950000 0.10070000 0.22170000 Roeloffs 2010 Tidal Calibration Calculated CH0 orientation = 214.2 degrees east of north ER2010 1.94238337 1.86109551 1.51739478 0.74855474 ER2010 -0.90466007 0.23951384 1.07851058 0.53125397 ER2010 1.35901017 0.20210269 -0.17046409 0.09480568 Reference: Roeloffs, E. (2010), Tidal calibration of Plate Boundary Observatory borehole strainmeters: Roles of vertical and shear coupling, J. Geophys. Res., 115, B06405, doi:10.1029/2009JB006407. Tue May 30 19:02:03 MDT 2017