B014 quinlt014bwa2008 Latitude 47.5133 Longitude -123.8125 Elevation 64.7 m Install Date 2008-03-04 Contents Of Tar files for year YYYY File Contents B014.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B014.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B014.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B014.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B014.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B014.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B014.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B014.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B014.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B014.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 = 256.3 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 7.450 -87.541 -0.00598 -0.00596 75.590 -0.00368 CH1 49.830 -53.721 -0.00363 -0.00577 0.000 0.00000 CH2 5.100 -22.715 -0.00976 -0.02324 11.352 0.00042 CH3 -0.060 -18.095 -0.01385 -0.02540 13.117 0.00040 Detrend reference date /detrend_ref Barometric Response Gauge Response(ns/millibar) CH0 -5.2 CH1 -4.3 CH2 -4.5 CH3 -3.8 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 -5.755 15.010 CH0 O1 -65.737 5.322 CH0 P1 -91.029 2.020 CH0 K1 -90.019 7.244 CH0 N2 39.528 2.996 CH0 S2 -62.227 5.361 CH1 M2 -96.392 4.248 CH1 O1 76.416 2.283 CH1 P1 99.410 1.443 CH1 K1 93.286 3.997 CH1 N2 -88.502 1.853 CH1 S2 15.525 2.159 CH2 M2 94.188 8.243 CH2 O1 8.779 6.663 CH2 P1 17.878 3.283 CH2 K1 13.622 10.041 CH2 N2 78.848 0.879 CH2 S2 77.779 5.957 CH3 M2 21.132 28.924 CH3 O1 -18.354 17.084 CH3 P1 -19.683 7.050 CH3 K1 -22.833 19.810 CH3 N2 41.697 6.365 CH3 S2 5.551 8.321 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 = 256.3 ISOTROPIC 0.29629686 0.51851781 0.29629618 0.22222249 ISOTROPIC 0.26977542 -0.31202056 -0.14496706 0.18721220 ISOTROPIC 0.28435281 0.19954287 -0.36416915 -0.11972653 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.04 1.113 0.014 0.636 KH2013 0.416 -0.621 -0.168 0.176 KH2013 0.353 0.512 -0.45 0.075 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