Table 1 Statistical analysis of recurrence times for the referred records.

Paleoseismic
record of (19)
Paleoseismic
record of (21)
PGA ≥ 0.13g (MMI
≥ VI½) events (this
study)
PGA ≥ 0.34g (MMI
≥ VIII) events (this
study)
Integrated Mw
7.0 record (this
study)
Lower-bound magnitude (Mmin)7.08.05.37.07.0
Time periodPast 60 kaPast 185 kaPast 220 kaPast 220 kaPast 220 ka
Number of events1326413139151
SD (year)4800460090022002000
SEM (year)1500100040190160
Mean return time (year)4600 ± 15006900 ± 1000530 ± 401500 ± 1901400 ± 160
COV1.050.671.651.491.43
Fitting of return time
distribution (R2)
Weibull0.97
Exponential0.010.850.720.630.66
Power-law0.140.590.930.880.89
The best fit to the distribution– (Fig. 5A)Weibull (Fig. 5B);
y = 0.18x0.7e(−0.03*x^1.7)
Power-law (Fig. 4B);
y = 0.03x−1.5
Power-law (Fig. 4C);
y = 0.14x−1.2
Power-law (Fig. 5C);
y = 0.15x−1.3
Earthquake recurrence patternRandomQuasi-periodicClustered
Fault behavior modelThe group-fault temporal clustering model