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Table 2 Radiocarbon dating results

From: Paleo-tsunami history along the northern Japan Trench: evidence from Noda Village, northern Sanriku coast, Japan

Sample number Core Depth (cm) Material Conventional radiocarbon age (yrBP) Calibrated age (2σ) cal BP δ13C (‰)
1 NM2 30–32 Organic sediment 1910 ± 30 1920–1815 − 27.2
2 NM8 25–27 Organic sediment 2100 ± 30 2150–1995 − 27.0
3 NM-D 35–37 Organic sediment 1740 ± 30 1715–1565 − 27.6
4 NM12 30–32 Organic sediment 2030 ± 30 2055–1900 − 24.4
5 NM-F 17–19 Organic sediment 1910 ± 30 1920–1815 − 26.9
6 NM13 48–50 Organic sediment 2610 ± 30 2765–2730 − 24.1
7 NM-H 21–23 Organic sediment 1940 ± 30 1945–1825 − 27.6
8 NM15 48–50 Organic sediment 2170 ± 30 2305–2070 − 27.6
9 NM-I 41–43 Organic sediment 2000 ± 30 2000–1885 − 27.3
10 NM16 42–44 Organic sediment 2070 ± 30 2120–1950 − 26.8
11 NM17 50–52 Organic sediment 2000 ± 30 2000–1885 − 26.8
12 NM-K 18–20 Organic sediment 1300 ± 30 1290–1180 − 27.4
13 NM-K 30–32 Organic sediment 2050 ± 30 2115–1930 − 26.6
14 NM-K 34–36 Organic sediment 2100 ± 30 2150–1995 − 26.5
15 NM-K 40–42 Organic sediment 2170 ± 30 2305–2070 − 26.2
16 NM-K 44–45 Organic sediment 2190 ± 30 2310–2120 − 24.3
17 NM-K 51–53 Organic sediment 2480 ± 30 2720–2385 − 25.2
18 NM-K 54–55 Organic sediment 2570 ± 30 2750–2710 − 26.6
19 NM18 25–27 Organic sediment 2150 ± 30 2300–2055 − 26.9
20 NM19 41–43 Organic sediment 2160 ± 30 2305–2065 − 24.7
  1. All data were obtained by accelerator mass spectroscopy (AMS). Sample numbers correspond to those in Figs. 4 and 5