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Comparison between empirical formula and SW4 simulation results #225

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Zzzzsxb opened this issue Nov 1, 2024 · 3 comments
Open

Comparison between empirical formula and SW4 simulation results #225

Zzzzsxb opened this issue Nov 1, 2024 · 3 comments

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@Zzzzsxb
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Zzzzsxb commented Nov 1, 2024

Under poor computing conditions, I divided the computational grid into 1000m and resolved the seismic wave frequency to 0.05hz, but the calculated PGA is much higher than the result obtained by GMMS. What is the reason? It stands to reason that low-frequency seismic waves will not produce such a large result.
@andersp
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andersp commented Nov 14, 2024

What is the source time function? When choosing the source frequency, did you follow the instructions in section 4.4 of the user's guide?

@Zzzzsxb
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Zzzzsxb commented Nov 15, 2024

I used the SRF file generated by Song's Rupture Model Generator

@andersp
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andersp commented Nov 15, 2024

Whenever using sources from a SRF file you must use the prefilter command to limit the frequency content.

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