2.252 Hernandez et al. (2006)

• Ground-motion model is:

  where y is in cm∕s2, a = 0.41296, b = 0.0003, c₁ = 0.5120, c₂ = 0.3983, c₃ = 0.2576, c₄ = 0.1962, c₅ = 0.1129 and σ = 0.2331.

• Data from ARM1 and ARM2 vertical borehole arrays of the Hualien LSST array at: surface (use c₁), 5.3m (use c₂), 15.8m (use c₃), 26.3m (use c₄) and 52.6m (use c₅). Surface geology at site is massive unconsolidated poorly bedded Pleistocene conglomerate composed of pebbles varying in diameter from 5 to 20cm, following 5m is mainly composed of fine and medium sand followed by a gravel layer of 35m.
• Apply these criteria to achieve uniform data: M_L > 5, focal depth < 30km and 0.42M_L - log(X + 0.02510^0.42M_L - 0.0033X + 1.22 > log 10 from a previous study.
• Most records from M_L < 6.
• Bandpass filter records with cut-offs at 0.08 and 40Hz.
• Propose M_s = 1.154M_L - 1.34.
• Some comparisons between records and predicted spectra are show for four groups of records and find a good match although for the group M_L6.75 and X = 62km find a slight overestimation, which believe is due to not modelling nonlinear magnitude dependence.
• Coefficients for vertical equations not reported.