This page shows the calibration history for the SLU station CGMO. 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 Aug 12 2011

Response Plots

• BNE
• BNN
• BNZ
• ENE
• ENN
• ENZ
• HNE
• HNN
• HNZ

Peak Responses

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  CGMO ** BNE    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0  90.0         50 RESP.NM.CGMO..BNE SAC_PZs_NM_CGMO_BNE__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** BNN    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0   0.0         50 RESP.NM.CGMO..BNN SAC_PZs_NM_CGMO_BNN__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** BNZ    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0 -90.0   0.0         50 RESP.NM.CGMO..BNZ SAC_PZs_NM_CGMO_BNZ__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** ENE    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0  90.0        200 RESP.NM.CGMO..ENE SAC_PZs_NM_CGMO_ENE__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** ENN    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0   0.0        200 RESP.NM.CGMO..ENN SAC_PZs_NM_CGMO_ENN__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** ENZ    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0 -90.0   0.0        200 RESP.NM.CGMO..ENZ SAC_PZs_NM_CGMO_ENZ__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** HNE    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0  90.0        100 RESP.NM.CGMO..HNE SAC_PZs_NM_CGMO_HNE__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** HNN    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0   0.0   0.0        100 RESP.NM.CGMO..HNN SAC_PZs_NM_CGMO_HNN__2011.001.00.00.00.0000_2011.174.24.60.60.99999 
 NM  CGMO ** HNZ    2011,001,00:00:00.0000    2011,174,00:00:00.0000  37.316700  -89.533300   108.0 -90.0   0.0        100 RESP.NM.CGMO..HNZ SAC_PZs_NM_CGMO_HNZ__2011.001.00.00.00.0000_2011.174.24.60.60.99999 

Created Mon Jan 27 19:24:07 UTC 2020