HMS-620
Portable Low-Frequency Acoustic Seismic Profiler
Low-frequency acoustic signals provide superior sub-bottom signal penetration through coarse sand, gravel tills, and other difficult-to-penetrate sediments. Small component size and portability make this a valuable tool for any survey platform.
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FEATURES/BENEFITS
• Narrow-band 400 Hz acoustic pulse provides bottom penetration through many sediment types
• Rugged, lightweight transducer platform provides stable operation in adverse sea-state conditions
• Flexible portable transceiver unit optimizes system for a wide range of sediments
- User-selectable trigger or external trigger
- Low-noise pre-amp with high/low pass filters and gain control
• Portable power supply operates from 110 or 220 VAC
• Oil-filled hydrophone streamer cable incorporates
a 7-meter multi-element active section
• 35-meter deactivation switch
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| (click image to enlarge) |
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| HMS-620 Bubble Pulser provided over 150 meters of penetration in this survey off of Gould Island (scale in msec). Courtesy of University of Rhode Island Graduate School of Oceanography |
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