4.118 Matsumoto et al. (2004)

• Ground-motion model is (for r_rup):

  Ground-motion model is (for r_q):

  

  H_c = h for h < 100km and H_c = 100km for h > 100km.

• Response parameter is acceleration for 5% damping.
• Data from at 91 dam sites with rock foundations. Most instruments in inspection gallery at lowest elevation (for concrete dams) and in bottom inspection gallery (for embankment dams). Note that 1.8 ≤ V _p ≤ 4.5km∕s for bedrock of many concrete dams and 1.5 ≤ V _p ≤ 3.0km∕s for bedrock of embankment dams, which convert to 0.7 ≤ V _s ≤ 1.5km∕s.
• Select data from M > 5, d_e < 200km and focal depth h < 130km.
• Most records from h < 60km.
• Most records from d < 100km.
• Classify earthquakes into three types:

  Shallow crustal

  Epicentres located inland at shallow depths. 175 records⁹.

  Inter-plate

  Epicentres located in ocean with h < 60km. 55 records.

  Deepintra-slab

  Epicentres located inland with h > 60km. 63 records.

• Know fault source mechanism for 12 earthquakes.
• Adopt 0.334exp(0.653M) from earlier Japanese study.
• Derive coefficients regardless of earthquake type. Then derive correction factors for each earthquake type.
• Do not report coefficients only graphs of coefficients against period.
• Find good agreement between predicted spectra and observed spectra for two stations that recorded the magnitude 8.0 Tokati-oki 2003 earthquake.