Thread: ppk?

Hi,

First, see the tutorial of Zhigang Peng (Other Basic tools - Phase Pick item)

http://geophysics.eas.gatech.edu/classes/SAC/

Then, try this commands:

Generate a file for the picks, use the command: touch picks

sac % run SAC
funcgen % generate impulse function, (here read your time series).
oapf picks % Open the file where will be written the picks
ppk % Pick the signal of your interest, use the commands of the
Peng tutorial, x and left click for zoom, p and s,
and then q
on the window for quit of the ppk.
capf picks % close the picks file. (important)

In the file picks will be written the information of the picking
including the amplitude.
Read the man pages for PPK. (help ppk)

You can extract the amplitude of the file picks using awk command.

Cheers,

**********************************
Milton P. PLASENCIA LINARES

Dipartimento Centro di Ricerche Sismologiche
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS

Borgo Grotta Gigante 42/C
(34010) Sgonico - TRIESTE - ITALIA
Tel: +39-040-2140305
Fax: +39-040-327307

E-mail: mplasencia<at>ogs.trieste.it

ASAIN (Antarctic Seismographic Argentinean Italian Network)
*********************************


Quoting "Nicolas Houlie" <N.Houlie<at>leeds.ac.uk>:

Hello,

I am looking for some help to pick up times on SAC waveforms. I saw you
can use PPK but I do not find any help on your webpage (nothing in
graphics capabilities).

is this possible to save the times/amplitudes in a file ?

Thanks,

nicolas

Nicolas Houlie
School of Earth and Environment
15-19 Hyde Terrace,
Email: n.houlie<at>leeds.ac.uk
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