B079 jackcn079bcs2006 Latitude 35.7157 Longitude -120.2057 Elevation 437 m Install Date 2006-10-13 Contents Of Tar files for year YYYY File Contents B079.YYYY.xml.gauge0.txt.gz Processed data from gauge 0 (CH0) B079.YYYY.xml.gauge1.txt.gz Processed data from gauge 1 (CH1) B079.YYYY.xml.gauge2.txt.gz Processed data from gauge 2 (CH2) B079.YYYY.xml.gauge3.txt.gz Processed data from gauge 3 (CH3) B079.YYYY.xml.Eee+Enn.txt.gz Processed areal strain, manufacturer's calibration B079.YYYY.xml.Eee-Enn.txt.gz Processed differential strain, manufacturer's calibration B079.YYYY.xml.2Ene.txt.gz Processed engineering shear strain, manufacturer's calibration some tars may contain the additional files B079.YYYY.xml.Eee+Enn.ER2010.txt.gz Processed areal strain, Roeloffs [2010], calibration B079.YYYY.xml.Eee-Enn.ER2010.txt.gz Processed differential strain, Roeloffs [2010], calibration B079.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 = 353.7 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 -59.830 0.000 0.00000 -0.00500 91.968 -0.00035 CH1 -37.690 37.639 0.00024 -0.03252 0.000 0.00000 CH2 -14.740 33.264 0.00017 -0.02280 0.000 0.00000 CH3 79.570 -83.078 -0.00507 -0.01404 0.000 0.00000 Detrend reference date 2006-10-13T00:00:00 Barometric Response Gauge Response(ns/millibar) CH0 -4.3 CH1 -5.2 CH2 -4.2 CH3 -4.1 Tidal Constituents Gauge Tide Phase Amp(ns) CH0 M2 12.094 6.497 CH0 O1 16.633 0.908 CH0 P1 27.522 0.607 CH0 K1 30.844 0.972 CH0 N2 -0.360 1.242 CH0 S2 23.924 3.947 CH1 M2 39.508 4.606 CH1 O1 -44.179 2.948 CH1 P1 -36.907 1.397 CH1 K1 -42.244 3.901 CH1 N2 42.472 1.170 CH1 S2 48.312 1.616 CH2 M2 -150.005 3.822 CH2 O1 89.029 1.281 CH2 P1 65.615 1.114 CH2 K1 90.908 1.325 CH2 N2 -158.559 1.069 CH2 S2 -149.634 1.992 CH3 M2 -113.150 2.188 CH3 O1 108.159 2.102 CH3 P1 105.779 0.989 CH3 K1 114.544 2.777 CH3 N2 -124.069 0.736 CH3 S2 -70.891 0.236 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 = 353.7 ISOTROPIC 0.00000000 0.66666667 0.00000000 0.66666667 ISOTROPIC -0.56664780 0.36728727 0.00000000 0.19936053 ISOTROPIC -0.52105936 -0.11510085 0.00000000 0.63616022 Hodgkinson et al. (2013) Tidal Calibration KH2013 2.941 4.421 4.107 1.402 KH2013 -0.318 0.927 1.048 -0.027 KH2013 0.145 0.496 1.618 0.746 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