Scale Factor

03-Unexpected behaviour/errors
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huffte
Posts: 919
Joined: 22 Jul 2011, 10:19
Location: Cookeville, Tennessee, USA
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Scale Factor

Post by huffte »

The program appears to ignore the specified scale factor in Step 3. Regardless of the specified scale factor, the matching appears to be performed to the specified target spectrum, not the specified target multiplied by the scale factor.

The scale factors specified in the Settings appears to be ignored as well, regardless of which algorithm is selected.

Great program!!!
Tim Huff
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seismosoft
Posts: 1000
Joined: 06 Jul 2007, 04:55

Re: Scale Factor

Post by seismosoft »

Indeed Tim, you are right.
We will fix this in the new release.
Many thanks for the continuous support.
Seismosoft Support
ppaudel
Posts: 1
Joined: 27 Aug 2021, 19:26

Re: Scale Factor

Post by ppaudel »

Also, do the the seed eqs we obtain from the website the software directs need to be scaled before using them for spectral matching? or is it already scaled and ready to use. If not, how do we scale them? Appreciate your answer.
huffte
Posts: 919
Joined: 22 Jul 2011, 10:19
Location: Cookeville, Tennessee, USA
Contact:

Re: Scale Factor

Post by huffte »

Most web sites for ground motion data provide unscaled accelerograms (certainly, PEER is explicit in stating that downloaded records are unscaled). There are several methods in the literature used for ground motion scaling. The online PEER database provides a means of computing appropriate scale factors given a period range of interest, as does one of the companion programs to SeismoMatch, SeismoSelect.
Tim Huff
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