Systems and methods for asynchronously acquiring seismic data are
described, one system comprising one or more seismic sources, a plurality
of sensor modules each comprising a seismic sensor, an A/D converter for
generating digitized seismic data, a digital signal processor (DSP), and
a sensor module clock; a seismic data recording station; and a seismic
data transmission sub-system comprising a high precision clock, the
sub-system allowing transmission of at least some of the digitized
seismic data to the recording station, wherein each sensor module is
configured to periodically receive from the sub-system an amount of the
drift of its clock relative to the high precision clock.