Thread: Re: Help with cutting seismic record within 15s window

Hi,

OK, you have border effect, so you can do:

1) first apply the rmean sac command and eventually save the file and then
apply
the procedure.

2) after the procedure use the taper sac command.

HTH,

M.

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

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

Borgo Grotta Gigante 42/C
(34010) Sgonico - Trieste - Italia
Tel: +39 040 2140 156 (Udine)
Tel: +39 040 2140 256 (Trieste)
Cel.: +39 331 6481 935

E-mail: mplasencia<at>inogs.it

GPG Key: 22FCFFA8

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

On 26 June 2018 at 15:34, sampath <srathnayakam<at>geo.umass.edu> wrote:

Hi,

Thank you for your reply. I used this method but when I look new sac file,
I saw some artificial wave form at the beginning which was not in the real
recording (original sac file that I used before cut). Do you know how to
remove it? I did try different taper but couldn't remove it. Thank you.

Sampath

On 6/26/18 2:28 PM, Milton Plasencia wrote:

Hi,

Follow:

sac> cut 14000 14015
sac> read file.sac
sac> plot
sac> w new_name_file.sac

HTH,

milton

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

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

Borgo Grotta Gigante 42
https://maps.google.com/?q=Borgo+Grotta+Gigante+42&entry=gmail&source=g>
/C
(34010) Sgonico - Trieste - Italia
Tel: +39 040 2140 156 (Udine)
Tel: +39 040 2140 256 (Trieste)
Cel.: +39 331 6481 935

E-mail: mplasencia<at>inogs.it

GPG Key: 22FCFFA8

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

On 26 June 2018 at 15:25, sampath <srathnayakam<at>geo.umass.edu> wrote:

Hi,

I need to cut a sac file within selected time window (e.g:15s time
length between 14000-14015 s) and need to save as a separate sac file.
Any help? Thank you.

Sampath

----------------------
SAC Help
Topic home: http://ds.iris.edu/message-center/topic/sac-help/ |
Unsubscribe: sac-help-unsubscribe<at>lists.ds.iris.edu

Sent from the IRIS Message Center (http://ds.iris.edu/message-center/)
Update subscription preferences at http://ds.iris.edu/account/profile/