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Table 3 Conditions for the 3-D SEM calculation

From: Directionally dependent horizontal-to-vertical spectral ratios of microtremors at Onahama, Fukushima, Japan

Parameter  
Model size Length × width × depth
840 m × 840 m × 840 m
Minimum element size 4 m
Total elements 494,429
Order of polynomial’s shape function 4
Maximum frequency 20 Hz
Minimal number of GLL nodes at 20 Hz 5
Time increment 0.000035 s
Time step 142,858
Total duration 5.0 s