Earthquake triangle

Abstract

The dimensions of the earthquake triangle have been studied in detail using relations involving only one measurable quantity called surface wave magnitude. These relations were derived by the elimination of subjective parameters (intensity and frequency) from known standard empirical relationships for the Horn of Africa and Ethiopian earthquakes. The results show that the foal depth lies in the range 16.41 Hy41.79km representing 100% shallow focus earthquakes. This agrees well 99% shallow earthquakes original observations made on macroscopic scale as compared to only 44% (34.28Ho469.83 km) obtained from analysis of teleseismic data carried out by previous investigators.

Keywords: earthquake(s), triangle, magnitude, teleseismic, focus.


(Global Journal of Pure and Applied Sciences: 2002 8(4): 539-542)