uphole time

[′əp‚hōl ‚tīm]

(geophysics)

The time that a seismic pulse requires to travel from an explosion at some depth in a shot hole to the surface of the earth.

References in periodicals archive ?

The used methodology is divided in two main steps: the first one build a shallow elastic model, estimating p-wave velocity from first arrivals or uphole time in seismic records and measuring s-wave velocity from the ground-roll cone in the seismic record.

The first step requires an elastic model of the shallow subsurface, which is created by estimating the p-wave velocity from the first arrivals or uphole times and the s-wave velocity from the ground-roll itself.