Calibration History

This page shows the calibration history for the SLU station OHIN. 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:

      491520 Oct 31 11:59

Response Plots

Peak Responses

NET STATION LOC COMP START END PEAK
NM OHIN BNE 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.2748e+05 Counts/METER/S**2 at 21.94 Hz
NM OHIN BNN 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.2858e+05 Counts/METER/S**2 at 21.93 Hz
NM OHIN BNZ 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.2966e+05 Counts/METER/S**2 at 21.93 Hz
NM OHIN ENE 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.2921e+05 Counts/METER/S/S at 50.02 Hz
NM OHIN ENN 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.3033e+05 Counts/METER/S/S at 49.95 Hz
NM OHIN ENZ 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.3142e+05 Counts/METER/S/S at 49.98 Hz
NM OHIN HNE 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.2906e+05 Counts/METER/S**2 at 43.88 Hz
NM OHIN 01 HNE 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2818e+05 Counts/METER/S**2 at 10.87 Hz
NM OHIN 02 HNE 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2811e+05 Counts/METER/S**2 at 15.44 Hz
NM OHIN HNN 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.3018e+05 Counts/METER/S**2 at 43.88 Hz
NM OHIN 01 HNN 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2839e+05 Counts/METER/S**2 at 10.88 Hz
NM OHIN 02 HNN 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2831e+05 Counts/METER/S**2 at 15.43 Hz
NM OHIN HNZ 2011,001,00:00:00.0000 2019,295,20:41:00.0000 Peak Sensitivity 1.3127e+05 Counts/METER/S**2 at 43.88 Hz
NM OHIN 01 HNZ 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2788e+05 Counts/METER/S**2 at 10.86 Hz
NM OHIN 02 HNZ 2019,295,20:41:00.0000 2599,365,23:59:59 Peak Sensitivity 4.2781e+05 Counts/METER/S**2 at 15.45 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  OHIN ** BNE    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0  90.0         50 RESP.NM.OHIN..BNE SAC_PZs_NM_OHIN_BNE__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** BNN    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0   0.0         50 RESP.NM.OHIN..BNN SAC_PZs_NM_OHIN_BNN__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** BNZ    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4 -90.0   0.0         50 RESP.NM.OHIN..BNZ SAC_PZs_NM_OHIN_BNZ__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** ENE    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0  90.0        200 RESP.NM.OHIN..ENE SAC_PZs_NM_OHIN_ENE__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** ENN    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0   0.0        200 RESP.NM.OHIN..ENN SAC_PZs_NM_OHIN_ENN__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** ENZ    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4 -90.0   0.0        200 RESP.NM.OHIN..ENZ SAC_PZs_NM_OHIN_ENZ__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** HNE    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0  90.0        100 RESP.NM.OHIN..HNE SAC_PZs_NM_OHIN_HNE__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** HNN    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4   0.0   0.0        100 RESP.NM.OHIN..HNN SAC_PZs_NM_OHIN_HNN__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN ** HNZ    2011,001,00:00:00.0000    2019,295,20:41:00.0000  38.048500  -87.511400   120.4 -90.0   0.0        100 RESP.NM.OHIN..HNZ SAC_PZs_NM_OHIN_HNZ__2011.001.00.00.00.0000_2019.295.20.41.60.99999 
 NM  OHIN 01 HNE    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4   0.0  90.0        100 RESP.NM.OHIN.01.HNE SAC_PZs_NM_OHIN_HNE_01_2019.295.20.41.00.0000_2599.365.23.59.59.99999 
 NM  OHIN 01 HNN    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4   0.0   0.0        100 RESP.NM.OHIN.01.HNN SAC_PZs_NM_OHIN_HNN_01_2019.295.20.41.00.0000_2599.365.23.59.59.99999 
 NM  OHIN 01 HNZ    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4 -90.0   0.0        100 RESP.NM.OHIN.01.HNZ SAC_PZs_NM_OHIN_HNZ_01_2019.295.20.41.00.0000_2599.365.23.59.59.99999 
 NM  OHIN 02 HNE    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4   0.0  90.0        200 RESP.NM.OHIN.02.HNE SAC_PZs_NM_OHIN_HNE_02_2019.295.20.41.00.0000_2599.365.23.59.59.99999 
 NM  OHIN 02 HNN    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4   0.0   0.0        200 RESP.NM.OHIN.02.HNN SAC_PZs_NM_OHIN_HNN_02_2019.295.20.41.00.0000_2599.365.23.59.59.99999 
 NM  OHIN 02 HNZ    2019,295,20:41:00.0000         2599,365,23:59:59  38.048500  -87.511400   120.4 -90.0   0.0        200 RESP.NM.OHIN.02.HNZ SAC_PZs_NM_OHIN_HNZ_02_2019.295.20.41.00.0000_2599.365.23.59.59.99999 

Created Mon Jan 27 19:31:20 UTC 2020