LINE L 



Z2Sw 



SEA FLOOR 



ACt)US : 



STIC HORIZON 



Figure 12. Acoustic records produced by the three types of seismic 



reflection equipment used in this study-- [a) Acoustipulse 

 (multiple transducers) record, (b) 3 .5-kilohertz (single 

 transducer) record, and (c) engineering sparker records. 



37 



