Translations:Dictionary:ABC method/2/en

$t_{v}=kt_{w}={\frac {(t_{w}V_{1})}{({\sqrt {V_{1}^{2}-V_{2}^{2}}})}}$

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  FIG. A-1. ABC weathering method. Weathering time t_W below B is t_w=(t_AB+t_BC–t_AC)/2 where t_AB=surface-to-surface time from A to B (obtained by adding the uphole time to the first-break time), etc.