This page shows the calibration history for the SLU station HAIL. 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 Feb 21 13:25

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  HAIL ** BNE    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0  90.0         50 RESP.NM.HAIL..BNE SAC_PZs_NM_HAIL_BNE__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** BNN    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0   0.0         50 RESP.NM.HAIL..BNN SAC_PZs_NM_HAIL_BNN__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** BNZ    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0 -90.0   0.0         50 RESP.NM.HAIL..BNZ SAC_PZs_NM_HAIL_BNZ__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** ENE    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0  90.0        200 RESP.NM.HAIL..ENE SAC_PZs_NM_HAIL_ENE__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** ENN    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0   0.0        200 RESP.NM.HAIL..ENN SAC_PZs_NM_HAIL_ENN__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** ENZ    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0 -90.0   0.0        200 RESP.NM.HAIL..ENZ SAC_PZs_NM_HAIL_ENZ__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** HNE    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0  90.0        100 RESP.NM.HAIL..HNE SAC_PZs_NM_HAIL_HNE__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** HNN    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0   0.0   0.0        100 RESP.NM.HAIL..HNN SAC_PZs_NM_HAIL_HNN__2002.261.00.00.00.0000_2599.365.23.59.59.99999 
 NM  HAIL ** HNZ    2002,261,00:00:00.0000         2599,365,23:59:59  37.752700  -88.437300   123.0 -90.0   0.0        100 RESP.NM.HAIL..HNZ SAC_PZs_NM_HAIL_HNZ__2002.261.00.00.00.0000_2599.365.23.59.59.99999 

Created Fri Feb 21 19:25:32 UTC 2014