Title :
Hydroacoustical experiments for determination of sediment parameters
Author :
Ivansson, S. ; Morén, P. ; Parastates, E. ; Westerlin, V.
Author_Institution :
Hydroacoustics and Seismology, Nat. Defence Res. Establ., Stockholm, Sweden
Abstract :
Three different kinds of hydroacoustical experiments conducted in Kalmarsund in the Baltic are described: (1) excitation with a slowly moving monofrequency source for transmission loss measurements and modal structure analysis, (2) excitation of transient waves using explosive charges, (3) excitation with a frequency sweep for analysis of transmission loss as function of frequency. The experiments are analysed within the framework of a laterally homogeneous model, treating the seabed as a layered elastic solid. Geoacoustic modeling and inversion for medium parameters is performed using genetic algorithms
Keywords :
oceanographic techniques; sediments; underwater sound; Baltic Sea; Kalmarsund; Sweden; explosive charges; frequency sweep; geoacoustic inversion; geoacoustic modelling; hydroacoustical experiments; laterally homogeneous model; layered elastic solid; modal structure analysis; seabed; sediment parameter determination; slowly moving monofrequency source; transient wave excitation; transmission loss measurements; Explosives; Frequency; Genetic algorithms; Geologic measurements; Loss measurement; Propagation losses; Reflection; Sediments; Solid modeling; Velocity measurement;
Conference_Titel :
OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings
Conference_Location :
Brest
Print_ISBN :
0-7803-2056-5
DOI :
10.1109/OCEANS.1994.364198
