2.1 Watanabe et al. (1988)

1) Reference

Watanabe, K., T. Usami, O. Hamamatsu, S. Hisamoto and T. Yamashita, 1988, Attenuation Characteristics of the Earthquakes after the Meiji Era, Historical Earthquakes (Rekishi-Jishin), No. 4, 11-20, (in Japanese).

3) Used data

- Area: Japan

- Period: after 1904

- Number of events: 130

3) Definition of seismic intensity

JMA Intensity

4) Definition of distance

- Epicentral distance

- Distance from the center of isoseismal

5) Applicability written in the paper

- magnitude range 5.1 £ M £ 8.2

- focal depth 0 £ h £ 80 km

- epicentral distances 50 km £ D

6) Empirical attenuation formula