Hi,
for O (Origin time) you can do:
sac> ch O gmt 2014 106 10 50 00
This is an example you must use the origin time of your event.
format year juilan_day hour minute sec [msec]
where ch = Change Header command,
i recommend you see the help
sac> help ch
For B, B in sac is the Beginning value of the independent variable.
Perhaps, you need the synchronize command.
HTH,
Milton P. Plasencia Linares
mpplasencia<at>gmail.com
On May 24, 2014, at 9:04 PM, kian rady <kianrady<at>yahoo.com> wrote:
Hello Sac users
I am a sac beginner. I have a sac seismogram. The header of file is:
……….
NPTS = 1326
B = 3.735695e+02
E = 1.698569e+03
IFTYPE = TIME SERIES FILE
LEVEN = TRUE
DELTA = 1.000000e+00
IDEP = UNKNOWN
DEPMIN = -1.549182e-03
DEPMAX = 1.978065e-02
DEPMEN = 1.464839e-05
OMARKER = 0
AMARKER = 509.66
T0MARKER = 920.7
T1MARKER = 920.7
KZDATE = APR 16 (106), 2013
KZTIME = 10:44:20.750
IZTYPE = EVENT ORIGIN TIME
………..
I should fill the header such that the O and B markers are filled RELATIVE to KZTIME. So how should I do that?
TanX
Kian
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Kian Rady
Milton Plasencia
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