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Table 2. Maximum Likelihood parameters (with relative errors) of the Double Branching model (see Eq. (1)) for the events of the JMA catalog above 30 km of depth (Mc = 5.0; Jan 1 1965-Dec 31 2008, 1935 events).

From: The double branching model for earthquake forecast applied to the Japanese seismicity

Parameter

Value

v

11 ± 1 year-1

K

1.1 ±0.1 · 10-2 yearp-1

p

1.16 ± 0.01

c

6.0 ± 1.0 · 10-5 year

a 1

1.20 ± 0.04

d

4.6 ± 0.2 km

q

≡ 1.5

Îł

0.53 ± 0.03

K 2

0.09 ± 0.01

t

8 ± 1 year

a 2

~0.0

d 2

24 ± 4 km

q 2

2.0 ± 0.2