1.19 Midorikawa & Ohtake (2004)

1)      Reference

Saburoh Midorikawa and Yu Ohtake, 2004, Variance of Peak Ground Acceleration and Velocity in Attenuation Relationship, 13th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, Paper No. 325.

 

2)      Estimated physical parameter

- Peak ground acceleration (Horizontal)

- Peak ground velocity (Horizontal)

 

3)      Used strong motion data

- Area: Japan

- Type of earthquake:

- Period: 1968-2001 years

- Number of events: 33

- Number of records: PGA -3335, PGV-1980

- Magnitude: 5.5-8.3

- Epicentral distance:

 

4)      Style of faulting

a)      Crustal

b)      Inter-plate

c)      Intra-plate

 

5)      Ground condition

Stiff site (AVS30 is about 600 m/s)

 

6)      Definition of magnitude

Moment magnitude

 

7)      Definition of source distance

Fault distance

 

8)      Definition of horizontal component

The larger one of the two horizontal components

 

9)      Applicability written in the paper

Not specified

 

10)  Empirical attenuation formula

                                       (D≦30km)

   (D>30km)

 (for PGA)

 (for PGV)

A: peak ground motion

              X: fault distance (km)

              D: focal depth (km)

              Mw: moment magnitude

              Si: dummy variable for fault type

 

Table 1.19-1 Coefficients from regression analysis