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Table 1 Minimum, average, and maximum Vp/Vs ratios in different depth ranges

From: Causes of the N–S compressional aftershocks of the E–W compressional 2008 Iwate–Miyagi Nairiku earthquake (M7.2) in the northeastern Japan arc

  Minimum Average Maximum
0.00–1.50 km 1.57 1.66 1.81
0.75–2.25 km 1.51 1.63 1.93
1.50–3.00 km 1.37 1.64 2.03
2.25–3.75 km 1.36 1.64 1.86
3.00–4.50 km 1.31 1.65 1.99
3.75–5.25 km 1.28 1.63 1.93
4.50–6.00 km 1.30 1.61 1.86
5.25–6.75 km 1.39 1.62 1.81
6.00–7.50 km 1.40 1.61 1.82
6.75–8.25 km 1.38 1.61 1.88
7.50–9.00 km 1.33 1.63 1.93
8.25–9.75 km 1.51 1.68 1.93