Calibration History

This page shows the calibration history for the SLU station SCMO. For each date and component, the amplitude and phase spectrum of the velocity sensitivity are presented as well as a simulated system response to an step in the INPUT units using the response obtained from the RESP file (obtained using the command rdseed -f dataless -R) together with evalresp are given in the first three figures in a row. The last two figures provide a plot of the sensitivity and simulated step response using the polezero file obtained using the command rdseed -f dataless -p. The purpose of the step response is to verify the polarity of the system.

Since modern broadband sensors have a flat response to ground velocity in the passband and since accelerometers have a flat response to acceleration, the plots give velocity and accelerations sensitivity, respectively, for the two types of instruments. In using the pole-zero files we carefully examine the input units to create the proper plot.

As distributed in the SEED response files available by ftp, ground motion up, to the north and to the east corresponds to positive numbers.

The time-date stamp for the seed file is the following: 

      458752 2010-11-29 13:18 /seis/dataless/QC/DATALESS/DATALESS/SCMO.dataless.seed

Response Plots

Peak Responses

NET STATION LOC COMP START END PEAK
NM SCMO BNE 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.2935e+05 Counts/METER/S/S at 21.94 Hz
NM SCMO BNN 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.2993e+05 Counts/METER/S/S at 21.93 Hz
NM SCMO BNZ 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.2905e+05 Counts/METER/S/S at 21.94 Hz
NM SCMO ENE 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3110e+05 Counts/METER/S/S at 49.98 Hz
NM SCMO ENN 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3170e+05 Counts/METER/S/S at 49.93 Hz
NM SCMO ENZ 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3080e+05 Counts/METER/S/S at 49.95 Hz
NM SCMO HNE 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3095e+05 Counts/METER/S/S at 43.88 Hz
NM SCMO HNN 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3155e+05 Counts/METER/S/S at 43.89 Hz
NM SCMO HNZ 2003,222,00:00:00.0000 99999,9999,00:00:00.0000 Peak Sensitivity 1.3065e+05 Counts/METER/S/S at 43.88 Hz

Station Information from Computer Programs in Seismology 3.30 annotated rdseed

NET  STA  LC CMP       ON_DATE                   OFF_DATE               LAT         LON        ELV    DIP    AZ       RATE  RESPONSE_FILE         POLE_ZERO_FILE
 NM  SCMO ** BNE    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0  90.0         50 RESP.NM.SCMO..BNE SAC_PZs_NM_SCMO_BNE__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** BNN    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0   0.0         50 RESP.NM.SCMO..BNN SAC_PZs_NM_SCMO_BNN__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** BNZ    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4 -90.0   0.0         50 RESP.NM.SCMO..BNZ SAC_PZs_NM_SCMO_BNZ__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** ENE    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0  90.0        200 RESP.NM.SCMO..ENE SAC_PZs_NM_SCMO_ENE__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** ENN    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0   0.0        200 RESP.NM.SCMO..ENN SAC_PZs_NM_SCMO_ENN__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** ENZ    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4 -90.0   0.0        200 RESP.NM.SCMO..ENZ SAC_PZs_NM_SCMO_ENZ__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** HNE    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0  90.0        100 RESP.NM.SCMO..HNE SAC_PZs_NM_SCMO_HNE__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** HNN    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4   0.0   0.0        100 RESP.NM.SCMO..HNN SAC_PZs_NM_SCMO_HNN__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 
 NM  SCMO ** HNZ    2003,222,00:00:00.0000  99999,9999,00:00:00.0000  38.761800  -90.641300   152.4 -90.0   0.0        100 RESP.NM.SCMO..HNZ SAC_PZs_NM_SCMO_HNZ__2003.222.00.00.00.0000_99999.9999.24.60.60.99999 



Created Fri Jan  7 19:33:25 UTC 2011