A downhole receiver for gathering seismic and sonic data from inside a
borehole includes a substantially tubular housing adapted for axial
connection to a tool string, and one or more sensors. A damping element
is provided to flexibly couple each sensor to the tubular housing. An
actuator extends the one or more sensors substantially radially with
respect to the tubular housing to clamp the sensors against the wall of
the borehole. In selected embodiments, the sensors may be one or multiple
component geophones, accelerometers, hydrophones, vibrometers, or the
like.