Development of a sound reflection system for profiling sediments in shelf and slope depths |
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| Authors: | E J Barnes |
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| Institution: | Department of Scientific and Industrial Research , New Zealand Oceanographic Institute , Wellington |
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| Abstract: | A sound reflection system for obtaining profiles of sedimentary structures in shelf and slope depths to 500 m has been developed, based on an Edgerton 1 kJ boomer as sound source. A logarithmic response receiver allows optimal recording of signals over a wide dynamic range. Penetrations of up to 500 m have been obtained from structures within both unconsolidated sediments and folded lower Tertiary structures. The equipment works reliably at speeds up to 9 knots. |
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| Keywords: | Haliotis rubra legal minimum length inverse logistic spawning stock biomass implementation uncertainty Australia |
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