1. vb. [Geophysics]

To detect and measure energy.

2. n. [Geophysics]

In seismic data, the energy detected and measured by a receiver. Normally, most of the energy is provided by a seismic source. Noise records are obtained in the absence of a seismic source to measure background or ambient noise levels.

See related terms: brute stack,  noise,  receiver,  source