Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [image-making processes and techniques]
6. [photography and photographic processes and techniques]
7. photographic techniques
8. picture-taking techniques
9. [picture-taking techniques by radiation type]
10. radiography
11. tomography

Anotations

Scope note:

A geophysical technique of surveying involving the measurement of lateral and vertical variations in resistivity of the earth to an electric current passing between metal electrodes; used in archaeology for 3D reconstruction of the subsurface.