Table 2 Surface temperatures and frozen depths of the grounds.

From: An investigation into the effects of soil and fastener-freezing on ground vibrations induced by high-speed train in frozen regions

Grounds

1

2

3

4

Surface temperature / T0 (℃ )

 ≥ 0

− 5

− 10

− 20

Frozen depth / hfrozen (m)

0

0.5

1.5

2.5

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