B084 pinyon084bcs2006 Latitude 33.61157 Longitude -116.4564 Elevation 1271 m Install Date 2006-06-18 Contents Of Tar files for year YYYY File Contents B084.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B084.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B084.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B084.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B084.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B084.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B084.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B084.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B084.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B084.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 (Kilo Pascals) 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 = 197 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 -24.290 33.309 -0.00215 -0.00214 0.000 0.00000 CH1 -27.560 33.993 -0.00174 -0.00060 0.000 0.00000 CH2 -26.570 35.351 -0.00210 -0.00280 0.000 0.00000 CH3 -36.510 40.503 -0.00133 0.00019 0.000 0.00000 Detrend reference date 2006-09-15T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -2.5 CH1 -1.9 CH2 -2.4 CH3 -2.9 Tidal Constituants Gauge Tide Amp(ns) Phase CH0 M2 53.8 3.2 CH0 K1 38.9 3.8 CH0 N2 157.8 0.6 CH0 O1 25.1 4.6 CH0 P1 21.1 2.1 CH0 S2 49.2 2.6 CH1 M2 -5.5 17.7 CH1 K1 16.1 3.4 CH1 N2 -6.2 4.0 CH1 O1 6.7 2.9 CH1 P1 12.1 1.6 CH1 S2 -0.7 8.9 CH2 M2 26.9 4.5 CH2 K1 -25.4 6.9 CH2 N2 38.6 1.1 CH2 O1 -20.7 5.6 CH2 P1 -19.4 2.8 CH2 S2 18.9 1.4 CH3 M2 126.6 5.3 CH3 K1 -13.6 6.2 CH3 N2 147.5 1.7 CH3 O1 -3.6 5.8 CH3 P1 -7.1 2.7 CH3 S2 132.0 2.4 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 = 197 0.29629630 0.51851852 0.29629630 0.22222222 -0.37880270 -0.02583057 0.38913493 0.01549834 0.10075632 -0.36945409 0.04702532 0.22167245 Roeloffs 2010 Tidal Calibration Calculated CH0 orientation = 221.7 degrees east of north 0.51663025 1.08181520 0.54100292 0.35056713 -0.13374735 -0.29881825 0.36424623 0.29744215 0.58605708 -0.31364431 -0.36590297 0.32969964 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. Hodgkinson et al (2012) Tidal Calibration 0.45303296 0.99851798 0.65351653 0.40592123 -0.14878761 -0.30513166 0.35854544 0.31469472 0.65743413 -0.32857504 -0.39645077 0.29346678 Reference: Hodgkinson, K. M., J. Langbein, B. Henderson, D. Mencin, and A. A. Borsa (2012), Tidal calibration of plate boundary observatory borehole strainmeters, J. Geophys. Res., doi:10.1029/2012JB009651 Thu Feb 7 11:03:47 MST 2013