Table 1 Sampling cores and sedimentary characteristics of each sand layer
From: Three thousand year paleo-tsunami history of the southern part of the Japan Trench
Core | Latitude (N) | Longitude (E) | Sand layer depth (cm) | Grain size | Sedimentary structures (visual observation) | Basal contact | Depth of the whitish layer in the CT images (cm) |
|---|---|---|---|---|---|---|---|
P-14 | 35.70985 | 140.85854 | 80 – 86 | m-f 1) | No | Clear | 155 – 165 |
P-14 | 278 – 287 | m-f | No | Clear | |||
KBT1 | 35.70992 | 140.85861 | 77 – 88 | m-f | No | Clear | 159 – 171 |
KBT1 | 289 – 295 | m-f | No | Clear | |||
KBT2 | 35.70965 | 140.85862 | 78 – 83 | m-f | No | Unclear | 143 – 156 |
KBT2 | 266 – 271 | m-f | No | Clear | |||
KBT3 | 35.70941 | 140.85886 |  –  |  –  |  –  |  –  |  –  |
KBT4 | 35.70936 | 140.85855 | 53 – 62 | m-f | No | Unclear | 113 – 131 |
KBT4 | 175 – 178 | m-f | No | Clear | |||
KBT4 | 219 – 241 | m-f | normal grading and inverse grading | Clear | |||
KBT4 | |||||||
KBT5 | 35.70983 | 140.85947 | 75 – 82 | m-f | No | Clear |  –  |
KBT6 | 35.70949 | 140.85916 | 286 – 292 | m-f | No | Unclear | 109 – 116 |
KBT7 | 35.70930 | 140.85906 |  –  |  –  |  –  |  –  |  –  |
KBT8 | 35.70954 | 140.85868 | 64 – 76 | m-f | No | Clear | 133 – 145 |
KBT8 | 243 – 251 | m-f | No | Unclear | |||
KBT9 | 35.70977 | 140.85818 |  –  |  –  |  –  |  –  |  –  |
KBT10 | 35.70956 | 140.85893 | 221 – 233 | m-f | No | Clear | 131 – 144 |
KBT11 | 35.70935 | 140.85862 | 10 – 28 | m-f | No | Clear | 101 – 113 |