Patent ID: 8712694

Claim:
A method of noise attenuation for land-based seismic surveying, comprising: deploying a sensor assembly at a ground surface, wherein the sensor assembly has a seismic sensor to measure seismic waves reflected from a subterranean structure in response to seismic waves transmitted due to activation of at least one seismic source, and a divergence sensor comprising a pressure sensor to measure ground-roll noise, wherein the divergence sensor includes a container containing a material and the pressure sensor immersed in the material, and the divergence sensor is insensitive to a direction of wave propagation, and wherein the divergence sensor is buried below the ground surface and a portion of the sensor assembly including the divergence sensor is in contact with an earth medium underneath the ground surface; receiving first data representing the reflected seismic waves from the seismic sensor and second data representing the ground-roll noise from the divergence sensor, the first data representing measurements along two or more axes, and the second data comprising measurements insensitive to a direction of wave propagation; and combining the first data and the second data to attenuate ground-roll noise in the first data.