منابع مشابه
Hydroacoustic Characterisation of the AMC Cavitation Tunnel
This paper presents recent results from an Industry-University-Defence collaborative project whose aim is to characterise the hydroacoustic environment of the Australian Maritime College Cavitation Tunnel. After summarising the operation of the tunnel, a methodology for measuring and processing the hydroacoustic measurements is presented that includes a technique for reducing the level of turbu...
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Observational studies have revealed a rich low-frequency structure in the atmosphere. A review of the theories, observations, and model studies of this low-frequency atmospheric variability is presented. On time scales of weeks or longer the atmosphere appears to possess distinct oscillatory behavior in welldefined and persistent "centers of action." This behavior is also an endemic feature of ...
متن کاملhydrOacOuStic mONitOriNg Of OceaNic SpreadiNg ceNterS
USAGE Permission is granted to copy this article for use in teaching and research. Republication, systematic reproduction, or collective redistribution of any portion of this article by photocopy machine, reposting, or other means is permitted only with the approval of The Oceanography Society. Send all correspondence to: [email protected] or The Oceanography Society, PO Box 1931, Rockville, MD 2084...
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Submarine landslides are an important process in volcano growth yet are rarely observed and poorly understood. We show that landslides occur frequently in association with the eruption of West Mata volcano in the NE Lau Basin. These events are identifiable in hydroacoustic data recorded between ~5 and 20 km from the volcano and may be recognized in spectrograms by the weak and strong powers at ...
متن کاملThe Application of Hydroacoustic Methods for Aquatic Biomass Measurements
PREFACE 1.0 INTRODUCTION 2.0 BASIC CONCEPTS 2. I ECHO SIGNAL SINGLE TARGET 2.2 ECHO SIGNAL MULTIPLE TARGETS 2.3 CORRELATION 2.4 TIME AVERAGING 3.0 ABUNDANCE ESTIMATION 3.1 THICK SCATTERING LAYER 3.2 ENVELOPE SAMPLING 3.3 ENVELOPE INTEGRATION 3.4 THIN SCATTERING LAYER 3.5 VARIANCE ERROR THICK SCATTERING LAYER 3.6 VARIANCE ERROR THIN SCATTERING LAYER 4.0 SUMMARY 5.0 CONCLUSION APPENDIX A DISTRIBU...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1979
ISSN: 0001-4966
DOI: 10.1121/1.2017029