Citation

Mäntyniemi P, Kijko A. Nat. Hazards 1991; 4(4): 421-430.

Copyright

(Copyright © 1991, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/BF00126647

PMID

unavailable

Abstract

Earthquake hazard parameters maximum regional magnitude M max and annual activity rate λ, and the b parameter of the Gutenberg-Richter relation have been evaluated for parts of East Africa. The applied maximum likelihood method permits the combination of both historical and instrumental data available (the catalog used here covers the interval 1880-1979). In addition, the uncertainty involved in magnitude determination and thresholds of completeness were taken into account. The hazard-parameter determination was performed for two study areas corresponding to segments of the eastern and western branches of the East African rift system. The results for these areas show differences that can be partly explained through the characteristics of the data.

Language: en