Cross‑hole investigation is an in‑situ exploration technology that conducts geophysical or testing measurements between two or more boreholes to obtain inter‑borehole stratigraphic, aquifer and geological parameters.
Cross‑hole high‑density resistivity method performs "CT scanning" on subsurface. Dense electrode probes are deployed in boreholes to "see through" underground, reconstructing 2D images of internal subsurface structures for fine geological investigation.
