Table 1 The 2011 Tohoku-Oki tsunami deposits
| Â | Number of cores | Grain size | Sediment thickness (cm) | Maximum inundation distance from coast (m) |
|---|---|---|---|---|
Idagawa Lowland | 16 | Medium to coarse sand | 4–36 | 1920 |
Sendai Plain | 41 | Medium to coarse sand |  ~ 34 | 4020 |
Numanohama Marsh | 20 | Pebbles | 4–23 | 990 |