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. [exploring and investigating techniques]
6. surveying (process)

Anotations

Scope note:

Seismic reflection surveying is a form of geophysical surveying based on the principle that acoustic energy imparted into the earth by an impact source (such as a sledgehammer or explosives) will bounce, or "reflect," off subsurface interfaces. Seismographs and acoustic sensors ("geophones") record the reflections. Reflection seismic techniques study the arrival times, amplitude, and shape of the reflected waves.