Mike Padgett
2014-04-16 22:43:16
Below is a Pole-Z file for network=CI, Station=PAS, channel=VHZ. It was
output from rdseed.
Questions:
1. Is the appropriate equation from "Pole-Zero Representation for
Analog Stages," page 159, equation 6?
2. Is the CONSTANT in the file In (+1.702831e+13) = Sd*A0?
3. How do INSTGAIN and A0, in the file relate to Sd, A0 and the
CONSTANT value of +1.702831e+13?
Thanks in advance,
Mike Padgett
* **********************************
* NETWORK (KNETWK): CI
* STATION (KSTNM): PAS
* LOCATION (KHOLE):
* CHANNEL (KCMPNM): VHZ
* CREATED : 2014-03-31T16:34:17
* START : 2006-06-06T22:30:00
* END : 2006-10-30T22:18:60
* DESCRIPTION : Pasadena, California, USA
* LATITUDE : 34.148440
* LONGITUDE : -118.171170
* ELEVATION : 314.0
* DEPTH : 0.0
* DIP : 0.0
* AZIMUTH : 0.0
* SAMPLE RATE : 0.1
* INPUT UNIT : M
* OUTPUT UNIT : COUNTS
* INSTTYPE : STS-1
* INSTGAIN : 2.572390e+03 (M/S)
* COMMENT : N/A
* SENSITIVITY : 4.326760e+09 (M/S)
* A0 : 3.935580e+03
* **********************************
ZEROS 3
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
POLES 4
-1.234120e-02 +1.234150e-02
-1.234120e-02 -1.234150e-02
-3.917570e+01 +4.912340e+01
-3.917570e+01 -4.912340e+01
CONSTANT +1.702831e+13
output from rdseed.
Questions:
1. Is the appropriate equation from "Pole-Zero Representation for
Analog Stages," page 159, equation 6?
2. Is the CONSTANT in the file In (+1.702831e+13) = Sd*A0?
3. How do INSTGAIN and A0, in the file relate to Sd, A0 and the
CONSTANT value of +1.702831e+13?
Thanks in advance,
Mike Padgett
* **********************************
* NETWORK (KNETWK): CI
* STATION (KSTNM): PAS
* LOCATION (KHOLE):
* CHANNEL (KCMPNM): VHZ
* CREATED : 2014-03-31T16:34:17
* START : 2006-06-06T22:30:00
* END : 2006-10-30T22:18:60
* DESCRIPTION : Pasadena, California, USA
* LATITUDE : 34.148440
* LONGITUDE : -118.171170
* ELEVATION : 314.0
* DEPTH : 0.0
* DIP : 0.0
* AZIMUTH : 0.0
* SAMPLE RATE : 0.1
* INPUT UNIT : M
* OUTPUT UNIT : COUNTS
* INSTTYPE : STS-1
* INSTGAIN : 2.572390e+03 (M/S)
* COMMENT : N/A
* SENSITIVITY : 4.326760e+09 (M/S)
* A0 : 3.935580e+03
* **********************************
ZEROS 3
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
POLES 4
-1.234120e-02 +1.234150e-02
-1.234120e-02 -1.234150e-02
-3.917570e+01 +4.912340e+01
-3.917570e+01 -4.912340e+01
CONSTANT +1.702831e+13
-
Milton Plasencia
2014-04-17 02:13:29Hi Mike,
Answer your questions:
1) Yes,
2) CONSTANT is: Sensitivity*A0, so (4.326760e+09)*(3.935580e+03)=+1.702831e+13.
3) INSTGAIN :this value is given for the fabricant in the calibration sheet,
so for STS-1 this value is ~2400 V/m/s, called sensor sensitivity or sensor gain.
HTH,
Milton
* * * * * * * * * * * * * * * * * * * * * * *
Milton P. PLASENCIA LINARES
Centro di Ricerche Sismologiche (CRS)
OGS - Istituto Nazionale di Oceanografia e di Geofisica Sperimentale
Borgo Grotta Gigante 42/C
(34010) Sgonico - Trieste - Italia
Tel: +39 040 2140 141 (Udine)
Tel: +39 040 2140 256 (Trieste)
Cel.: +39 331 6481 935
E-mail: mplasencia<at>inogs.it
ASAIN (Antarctic Seismographic Argentinean Italian Network)
*********************************
On Apr 16, 2014, at 10:43 PM, Mike Padgett <mpadgett<at>quantum-earth.com> wrote:
Below is a Pole-Z file for network=CI, Station=PAS, channel=VHZ. It was output from rdseed.
Questions:
1. Is the appropriate equation from “Pole-Zero Representation for Analog Stages,” page 159, equation 6?
2. Is the CONSTANT in the file In (+1.702831e+13) = Sd*A0?
3. How do INSTGAIN and A0, in the file relate to Sd, A0 and the CONSTANT value of +1.702831e+13?
Thanks in advance,
Mike Padgett
* **********************************
* NETWORK (KNETWK): CI
* STATION (KSTNM): PAS
* LOCATION (KHOLE):
* CHANNEL (KCMPNM): VHZ
* CREATED : 2014-03-31T16:34:17
* START : 2006-06-06T22:30:00
* END : 2006-10-30T22:18:60
* DESCRIPTION : Pasadena, California, USA
* LATITUDE : 34.148440
* LONGITUDE : -118.171170
* ELEVATION : 314.0
* DEPTH : 0.0
* DIP : 0.0
* AZIMUTH : 0.0
* SAMPLE RATE : 0.1
* INPUT UNIT : M
* OUTPUT UNIT : COUNTS
* INSTTYPE : STS-1
* INSTGAIN : 2.572390e+03 (M/S)
* COMMENT : N/A
* SENSITIVITY : 4.326760e+09 (M/S)
* A0 : 3.935580e+03
* **********************************
ZEROS 3
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
+0.000000e+00 +0.000000e+00
POLES 4
-1.234120e-02 +1.234150e-02
-1.234120e-02 -1.234150e-02
-3.917570e+01 +4.912340e+01
-3.917570e+01 -4.912340e+01
CONSTANT +1.702831e+13
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