Receiving Seismic Signals From Seismic Signal Sources

A method for receiving seismic signals, comprising:

• installing a first plurality of seismic signal sources at a terranean surface grouped to define respective perimeters of a first plurality of geographic zones on the terranean surface;
• installing a second plurality of seismic signal sources at the terranean surface grouped to define respective perimeters of a second plurality of geographic zones on the terranean surface, one of the first plurality of geographic zones adjacent one of the second plurality of geographic zones;
• installing a plurality of seismic signal receivers at the terranean surface within the first plurality of geographic zones;
• and
• installing a plurality of seismic signal receivers at the terranean surface within the second plurality of geographic zones, the installed seismic signal receivers within the first plurality of geographic zones are less than the installed seismic signal receivers within the second plurality of geographic zones.

A seismic exploration system, comprising:

• a seismic survey area on a terranean surface defined by a perimeter and comprising a first plurality of sub-areas and a second plurality of sub-areas adjacent the first plurality of sub-areas;
• two or more seismic energy sources installed at the terranean surface within the perimeter of the seismic survey area;
• a first plurality of groups of seismic energy receivers installed at the terranean surface in the first plurality of sub-areas, each of the groups of seismic energy receivers in the first plurality of groups comprising two or more seismic energy receivers per wavelength of seismic energy generated by the two or more seismic energy sources;
• and
• a second plurality of groups of seismic energy receivers installed at the terranean surface in the second plurality of sub-areas, each of the groups of seismic energy receivers in the second plurality of groups comprising less than two seismic energy receivers per wavelength of seismic energy generated by the two or more seismic energy sources.

A method for receiving seismic signals, comprising:

• defining, within a perimeter, a seismic survey area on a terranean surface, the seismic survey area comprising a first plurality of sub-areas and a second plurality of sub-areas adjacent the first plurality of sub-areas;
• installing two or more seismic energy sources at the terranean surface within the perimeter of the seismic survey area;
• installing a first plurality of groups of seismic energy receivers at the terranean surface in the first plurality of sub-areas, each of the groups of seismic energy receivers in the first plurality of groups comprising two or more seismic energy receivers per wavelength of seismic energy generated by the two or more seismic energy sources;
• and
• installing a second plurality of groups of seismic energy receivers at the terranean surface in the second plurality of sub-areas, each of the groups of seismic energy receivers in the second plurality of groups comprising less than two seismic energy receivers per wavelength of seismic energy generated by the two or more seismic energy sources.