[지구과학] 지진파의 감쇠 [지구과학] 지진파의 감쇠 ‥of the seismic demand (PGA or spectral acceleration (SA) in units of g) M is the moment magnitude of the earthquake r is the horizontal distance, in km, from the site to the closest point on the surface projection of fault rupture BSA is a factor converting spectral velocity (cm/sec) to spectral acc. (g) aSS, aRS are coefficients for strike-slip an 자연과학  |  7page  |  1,000 원

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