Research Article
Transmitting Characteristics of Seismic Motion in Super-Deep Overburden Layer Ground
Table 1
Maximum damping ratio
and modulus decay (or damping ratio increasing) coefficient
of soils in ground.
| Soils | λmax | k1 |
| Layer ④, modern alluvial deposit sand gravel stratum layer | 0.238 | 17.6 | Layer ③-3, fluvio-lacustrine deposits sand layer containing gravel | 0.278 | 5.5 | Layer ③-2, fluvio-lacustrine deposits silty clay layer | 0.293 | 6.3 | Layer ③-1, fluvio-lacustrine deposits sand layer containing gravel | 0.271 | 5.7 | Layer ②, alluvial-pluvial and stacking sand layer containing crush (or pebble) | 0.245 | 15.2 | Layer ①, moraine and glacial relics stacking crushed-rock layer | 0.240 | 16.0 |
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