1.24 Bragato & Slejko (2005)

1)      Reference

P. L. Bragato and D. Slejko, 2005, Empirical Ground-Motion Attenuation Relations for the Eastern Alps in the Magnitude Range 2.5-6.3, Bulletin of Seismological Society of America, Vol. 95, No. 1, 252-276.

 

2)      Estimated physical parameter

- Peak ground acceleration, Peak ground velocity (Horizontal, Vertical)

- Acceleration response spectrum, Fourier amplitudes, Ia (Arias, 1970[1])

 

3)      Used strong motion data

- Area: Eastern Alps

- Type of earthquake:

- Period: 1976-2002 years

- Number of events: 240

- Number of records: vertical -3168  horizontal -1402

- Magnitude: ML2.5-6.3

- Epicentral distance: 0-130km

 

4)      Style of faulting

Not specified

 

5)      Ground condition

Not specified

 

6)      Definition of magnitude

Local magnitude

 

7)      Definition of source distance

Epicentral distance or closest horizontal distance to the vertical projection of the rupture (JB distance; Abrahamson and Shedlock, 1977[2])

 

8)      Definition of horizontal components

 

9)      Applicability written in the paper

ML2.5-6.3, epicentral and JB distances < 130km

 

10)  Empirical attenuation formula

Y: ground-motion quantity

              M: local magnitude

              d: distance on the surface between the source (or rupture) and recording station

 

 

Table 1.24-1 Regression Coefficients for PHA, PHA, PHV, PVV, Ia, SA, and FA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Table 1.24-2 Continued

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


[1] Arias, A. (1970). A Measure of Earthquake Intensity, in Seismic Design for Nuclear Power Plants, R J. Hansen

(editor), MIT.Press, Cambridge, Mass., 438-483.

[2] Abrahamson, N. A., and W. J. Silva (1977). Empirical response spectral attenuation relations for shallow crustal

earthquakes, Seism. Res. Letter 68, 94-125.