Page 193 - Acquisition and Processing of Marine Seismic Data

184 3. NOISE IN MARINE SEISMICS

FIG. 3.13 (A) Two successive raw shot gathers with significant swell noise, and (B) after removal of the swell noise using a
14–180 Hz band-pass filter.

FIG. 3.14 Schematical illustration of the noise level along the streamer. RMS noise significantly increases at channels close
to the bird (B) locations.