Paleotsunami history of Hachinohe, northern Japan: a multiproxy analysis and numerical modeling approach

Progress in Earth and Planetary Science

Table 5 Probabilistic recurrence between sand units

	Mean recurrence (years, 95% confidence interval)	Sigma	Coefficient of variation (CV = σ/µ)
Unit S1–Unit S2	784	323	0.66
Unit S2–Unit S4	559	263	0.57
Unit S4–Unit S5	346	151	0.68
Unit S5–Unit S6	395	169	0.80
Unit S6–Unit S7	418	179	0.74
Unit S7–Unit S8	450	192	0.77
Unit S8–Unit S9	320	147	0.99
Unit S9–Unit S10	378	177	0.71
Recurrence interval from S1 to S10	456	200	0.74
Recurrence interval from S4 to S10 (tsunami sands)	384	169	0.78