Thread: S wave picking

Dear Mario,

The second command should be:
sac>oapf picking.txt. # this command open a picking file instead ohpf
that open hypo file.
sac> ppk .....
here, see the manual to understand the plotpktable commands
sac> help plotpktable
to do pickings, when you finish close with Q the ppk instance
sac> capf picking.txt. # close the picking.txt file
and you should to find your pickings in the file.

HTH,

M.





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Milton P. PLASENCIA LINARES

Centro di Ricerche Sismologiche (CRS)
OGS - Istituto Nazionale di Oceanografia e di Geofisica Sperimentale

Borgo Grotta Gigante 42
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On 29 May 2018 at 18:08, Mario La Rocca <mario.larocca<at>unical.it> wrote:

dear sac experts, I have a problem with the picking of S phase in sac. I
follow this procedure to save pickings:
1) r filename.*.sac
2) ohpf pickings.txt
3) ppk p 3 bell off
then I type 'p' and then 'h' at the P wave arrival time, and it works
fine because the pickings.txt file will contain a row in the correct format
for that station (after the file has been closed by chpf).
However, if I type 's' and then 'h' for the S wave arrival time, it does
not work. In fact in the pickings.txt file I find an empty row filled with
1000 blank instead of the expected string.

I am working with sac 2013, version 101.6a on linux debian. I tried also
sac2000, 2005 and 2009, even on ubuntu, but I could never obtain a correct
picking of the S wave.

Can anyone help me? Am I doing something wrong? thank you very much.


--
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Mario La Rocca
Professore Associato di Geofisica
Universita' della Calabria - Cosenza
e-mail: mario.larocca<at>unical.it
tel: +39 0984 493567; 0984 493666
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