B088  skyoks088bcs200 

Latitude  33.37495	Longitude  -116.62052  Elevation  1404  m
 
Install Date 2007-01-27 

Contents Of Tar files for year YYYY 
File                              Contents  
B088.YYYY.xml.gauge0.txt.gz       Processed data from gauge 0 (CH0) 
B088.YYYY.xml.gauge1.txt.gz       Processed data from gauge 1 (CH1) 
B088.YYYY.xml.gauge2.txt.gz       Processed data from gauge 2 (CH2) 
B088.YYYY.xml.gauge3.txt.gz       Processed data from gauge 3 (CH3) 
B088.YYYY.xml.Eee+Enn.txt.gz      Processed areal strain, manufacturer's calibration
B088.YYYY.xml.Eee-Enn.txt.gz      Processed differential strain, manufacturer's calibration
B088.YYYY.xml.2Ene.txt.gz         Processed engineering shear strain, manufacturer's calibration
some tars may contain the additional files
B088.YYYY.xml.Eee+Enn.ER2010.txt.gz      Processed areal strain, Roeloffs [2010], calibration
B088.YYYY.xml.Eee-Enn.ER2010.txt.gz      Processed differential strain, Roeloffs [2010], calibration
B088.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 =  216.2  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	-165.629   123.790   -0.00110 -0.00100    0.000    0.00000
CH1	-345.180   314.240   -0.00063  0.03340    0.000    0.00000
CH2	  -6.860     0.000    0.00000 -0.00950    0.000    0.00000
CH3	 -32.930    32.404   -0.00089  0.00874    0.000   -0.00000
 
Barometric Response
Gauge	Response(ns/millibar) 
CH0	-1.1
CH1	-2.6
CH2	-3.2
CH3	-2.1
  
Tidal Constituants
Gauge	Tide	Amp(ns)	Phase
CH0	M2	5.8	21.0
CH0	K1	35.0	9.6
CH0	N2	-2.9	3.5
CH0	O1	28.0	8.6
CH0	P1	22.7	3.4
CH0	S2	12.1	11.7
CH1	M2	-5.6	14.4
CH1	K1	-4.5	5.6
CH1	N2	-3.4	3.3
CH1	O1	-11.6	4.5
CH1	P1	-18.8	1.9
CH1	S2	-0.7	6.6
CH2	M2	165.4	7.1
CH2	K1	-76.9	2.5
CH2	N2	158.2	1.6
CH2	O1	-76.4	1.7
CH2	P1	-96.5	1.1
CH2	S2	168.5	4.4
CH3	M2	148.1	4.5
CH3	K1	81.9	1.2
CH3	N2	164.2	1.3
CH3	O1	68.8	1.1
CH3	P1	170.2	0.3
CH3	S2	135.8	2.8
 
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 =  216.2
    0.29629682    0.51851799    0.29629614    0.22222238
   -0.23428492   -0.24974042    0.33418031    0.14984504
    0.31423878   -0.27350363   -0.20483703    0.16410189
 
 
 
Fri Nov 16 12:00:29 MST 2012