B032 hergrt032bor2007 Latitude 43.668 Longitude -123.3923 Elevation 63.8 m Install Date 2007-12-02 Contents Of Tar files for year YYYY File Contents B032.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B032.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B032.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B032.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B032.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B032.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B032.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B032.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B032.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B032.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 = 215.8 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 -78.010 82.824 -0.00078 -0.00958 0.000 0.00000 CH1 -53.930 71.875 -0.00068 -0.01311 0.000 0.00000 CH2 16.650 -28.345 -0.00946 0.00242 0.000 0.00000 CH3 93.390 -93.457 -0.00283 -0.00856 0.000 0.00000 Detrend reference date 2007-12-02T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -6.1 CH1 -4.9 CH2 -5.8 CH3 -5.7 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 46.333 8.131 CH0 O1 -74.965 6.336 CH0 P1 -105.936 2.687 CH0 K1 -89.356 8.279 CH0 N2 81.741 2.905 CH0 S2 -150.812 1.578 CH1 M2 -116.730 11.758 CH1 O1 63.942 8.713 CH1 P1 71.429 4.046 CH1 K1 64.307 12.738 CH1 N2 -102.370 3.517 CH1 S2 -65.791 1.706 CH2 M2 46.460 11.428 CH2 O1 -118.525 4.286 CH2 P1 -147.190 2.045 CH2 K1 -126.087 4.921 CH2 N2 44.437 2.478 CH2 S2 58.187 5.757 CH3 M2 44.829 22.059 CH3 O1 -90.064 10.657 CH3 P1 -106.611 4.659 CH3 K1 -100.206 14.307 CH3 N2 63.165 5.636 CH3 S2 54.259 4.381 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 = 215.8 ISOTROPIC 0.29629714 0.51851772 0.29629602 0.22222246 ISOTROPIC -0.23864921 -0.24589721 0.33700737 0.14753905 ISOTROPIC 0.31093621 -0.27696351 -0.20015080 0.16617811 Hodgkinson et al. (2013) Tidal Calibration KH2013 0.697 2.999 0.334 1.768 KH2013 0.455 0.153 -0.239 0.275 KH2013 0.089 -0.116 -0.417 -0.433 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