Page 219 - Acquisition and Processing of Marine Seismic Data

FIG. 3.40 (A) Noise from marine mammals (blue arrows) on two filtered shot gathers, and (B) amplitude spectrum of the noise.

FIG. 3.41 Three shot gatherscontaminated byreverse V-shaped noise fromstreamer ballastattached atthe locationofchannel
148. Inset shows different size ballasts used to trim streamer in order to maintain the streamer stability. Photo courtesy Seamap Inc.