B087  fordra087bcs2006 

Latitude  33.4955	Longitude  -116.60267  Elevation  1139  m
 
Install Date 2006-06-13 

Contents Of Tar files for year YYYY 
File                              Contents  
B087.YYYY.xml.gauge0.txt.gz       Processed data from gauge 0 (CH0) 
B087.YYYY.xml.gauge1.txt.gz       Processed data from gauge 1 (CH1) 
B087.YYYY.xml.gauge2.txt.gz       Processed data from gauge 2 (CH2) 
B087.YYYY.xml.gauge3.txt.gz       Processed data from gauge 3 (CH3) 
B087.YYYY.xml.Eee+Enn.txt.gz      Processed areal strain, manufacturer's calibration
B087.YYYY.xml.Eee-Enn.txt.gz      Processed differential strain, manufacturer's calibration
B087.YYYY.xml.2Ene.txt.gz         Processed engineering shear strain, manufacturer's calibration
some tars may contain the additional files
B087.YYYY.xml.Eee+Enn.ER2010.txt.gz      Processed areal strain, Roeloffs [2010], calibration
B087.YYYY.xml.Eee-Enn.ER2010.txt.gz      Processed differential strain, Roeloffs [2010], calibration
B087.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:	0.1 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 =  340.7  degrees east of north 
  
Borehole Trend Models, y=F+A1*exp(T1*t)+M*t+A2*exp(T2*t) 
Gauge		F	A1	T1	M	A2	T2
CH0	   8.070     0.000    0.00000  0.00368  -12.713   -0.00120
CH1	 -17.180    28.608   -0.00303 -0.00200    0.000    0.00000
CH2	 -23.460    43.166   -0.00350 -0.00477    0.000    0.00000
CH3	 -13.780    19.821   -0.00214  0.00117    0.000    0.00000
 
Barometric Response
Gauge	Response(ns/millibar) 
CH0	-4.2
CH1	-2.7
CH2	-4.0
CH3	-5.2
  
Tidal Constituants
Gauge	Tide	Amp(ns)	Phase
CH0	M2	58.3	2.7
CH0	K1	-21.7	3.9
CH0	N2	57.5	0.9
CH0	O1	-26.4	3.0
CH0	P1	-37.7	1.3
CH0	S2	93.3	0.8
CH1	M2	30.6	7.1
CH1	K1	3.5	6.7
CH1	N2	49.4	0.8
CH1	O1	6.5	6.4
CH1	P1	5.3	2.7
CH1	S2	32.1	3.9
CH2	M2	-24.4	11.4
CH2	K1	134.0	1.8
CH2	N2	-21.1	3.0
CH2	O1	160.0	2.1
CH2	P1	113.5	0.9
CH2	S2	-5.7	5.5
CH3	M2	-126.1	3.9
CH3	K1	-177.6	5.0
CH3	N2	-67.4	0.6
CH3	O1	179.9	5.5
CH3	P1	167.6	1.6
CH3	S2	-151.9	1.4
 
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 =  340.7
    0.29629655    0.51851809    0.29629644    0.22222225
   -0.20940582    0.34483678    0.07147128   -0.20690225
   -0.33133703   -0.13513642    0.38539079    0.08108265
 
 
 
Fri Nov 16 12:16:51 MST 2012