Table 6.

Parameters of recurrence relationships for all area sources.

Zone No.	Zone Name	No. of events	α	β	λ	Mmin	Mmax	б Mmax	Mmax (obs)
1	Sheba Ridge	205	11.96	2.29	6.12	4.0	6.9	0.25	6.7
2	East Sheba Ridge	469	14.53	2.84	7.56	4.0	6.9	0.25	6.6
3	Gulf of Aden	775	15.3	2.94	10.55	4.0	6.9	0.25	6.6
4	East Rub al Khali Arabian Shield	5	-	-	-	4.0	5.2	0.25	4.9
5	North Rub Al-Khali Arabian Shield	-	-	-	-	4.0	-	0.25	-
6	Yemen Southern Arabian Shield	1	-	-	-	4.0	4.6	0.25	4.4
7	Yemen North western Arabian Shield	59	10.50	2.18	2.48	4.0	6.6	0.25	6.4
8	Yemen Southwestern Arabian Shield	8	9.73	2.43	0.38	4.0	5.9	0.25	5.7
9	Red Sea-Al Darb	147	15.22	3.21	3.01	4.0	6.6	0.25	6.3
10	African Southwestern Red Sea	264	13.72	2.64	7.88	4.0	6.8	0.25	6.5
11	East African Rift	52	6.04	1.33	1.17	4.0	6.6	0.25	6.4