Title
Seismic sensing of extremely-low-frequency sounds in coastal waters
Abstract
A very compact, but quite lightweight digital, triaxial ocean-bottom seismometer has been developed to study ELF-acoustics (1 to 100 Hz) in shallow water by mounting three active, non orientation-privileged 1-Hz geophones in a flat container together with a compass, two tilt-meters, a thermistor, and the pertinent A/D electronics. Each geo-acoustic channel is sampled at 600 Hz and the floating-point conversion is performed with 12 + 2 bits, giving the large dynamic range of 120 dB needed to cope simultaneously with ambient noise and signals from nearby cw or explosive sources. The signals are then transmitted by a radio buoy to the shipboard acquisition and pre-processing systems. These sensor stations have been deployed to investigate infrasound propagation in coastal waters. Signals from small charges and LF-sources are analyzed, together with records of the noise background.
Year
DOI
Venue
1982
10.1109/ICASSP.1982.1171828
Acoustics, Speech, and Signal Processing, IEEE International Conference ICASSP '82.
Keywords
Field
DocType
acoustic noise,dynamic range,floating point,thermistors,multiplexing,shallow water,ocean temperature,ambient noise,extremely low frequency
Noise,Buoy,Dynamic range,Pattern recognition,Computer science,Infrasound,Ambient noise level,Geophone,Remote sensing,Communication channel,Seismometer,Artificial intelligence
Conference
Volume
Citations 
PageRank 
7
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Barbagelata, A.100.34
Michelozzi, E.200.34
Dieter Rauch300.68
Bernd Schmalfeldt400.34