Dynamic gain adjustments in seismic surveys

A seismic data acquisition system, comprising:

• means for determining an arrival time at a seismic receiver of a downgoing seismic wavefield associated with a seismic source based at least in part on an estimated position of the seismic source, an estimated position of the seismic receiver, or combinations thereof;
• and
• means for adjusting a gain of the seismic receiver based at least in part on the determined arrival time of the downgoing seismic wavefield.

A method for acquiring a seismic survey, comprising:

• operating a seismic receiver during operation of a seismic source transmitting a downgoing seismic wavefield, a position of the seismic source being constant during operation relative to the seismic receiver;
• and
• using a gain at the seismic receiver based at least in part on a proximity of the seismic receiver to the seismic source.