| 摘要 |
<p>A method of geophysically prospecting a polarizable medium by measuring induced polarization effects wherein the medium is inductively polarized by a time varying current in an induction coil that varies with respect to time unidirectionally to maintain a unidirectional current flow in the medium for a first period and then does not vary with respect to time for a second period and wherein the induced polarization effects caused by the unidirectional current flow in the first period are measured during the second period.</p> |
