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