[SAC-HELP] How to remove the instrument response?

[Onur Tan]

Dear Mohammed,

You must also calculate the CONSTANT from the Guralp's A0 value .
Read this: 
www.le.ac.uk/seis-uk/downloads/seisuk_data_manage.pdf

best regards
Onur Tan

 Dr. Onur TAN |------------------------------------------------------------
 -------------                                                             |
| TÜBİTAK Marmara Araştırma Merkezi  | TUBITAK Marmara Research Center     |
| Yer ve Deniz Bilimleri Enstitüsü   | Earth and Marine Sciences Institute |
| Gebze - Kocaeli                    | Gebze - Kocaeli - TURKEY            |
 --------------------------------------------------------------------------


-----Original Message-----
From: sac-help-bounces at iris.washington.edu [mailto:sac-help-bounces at iris.washington.edu] On Behalf Of Sheila Peacock
Sent: Monday, February 16, 2009 12:13 PM
To: Mohamed Kamaleldin Abdel Galeil Salah
Cc: sac-help at iris.washington.edu
Subject: Re: [SAC-HELP] How to remove the instrument response?

Dear Mohammed,

Guralp data sheets list the poles and zeros in units of Hz, not radians, and usually for velocity or acceleration as appropriate for the instrument (see the details on the actual data sheet).
For use in SAC you have to convert them to displacement in radians i.e. x2pi, then add one zero at (0,0) if they are in velocity or two if they are in acceleration.

Regards,
Sheila


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