Acoustic classification of zooplankton

Traykovski, Martin; Linda, V

doi:10.1575/1912/5351

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have made great progress in recent years in the classification of live individual zooplankton with broadband signals [3,5,[12][13][14][15], and very recently with live individual fish [6]. Following are examples: 1) Classification according to anatomical group.…”

Section: Examplesmentioning

confidence: 99%

Broadband Acoustic Classification of Individual Zooplankton and Fish: A Review of Recent Work

STANTON,

CHU,

MARTIN TRAYKOVSKI

et al. 2023

Acoustical Oceanography 2001

View full text Add to dashboard Cite

Echoes resulting from broadband insonification of marine life such as zooplanktan and fish are rich with information. The challenge lies in developing an optimal approach toward extracting meaningful biological informationfrorn the data. Because ofthe complexity of the acoustic scattering by the organisms, we have studied the scattering through a combination of theoretical modeling and extensive laboratory measurements of broadband acoustic scattering by a variety of live individual animals. Speci cally, we have recorded echoesfram three major anatomical groups of zooplankton: 1) fluid-like (shrimp and euphausiids), 2) elastic shelled (pteropods and (benthic) periwinkles), and 3) gas-bearing (siphanophores), as well as a bladder bearing fish species (alewife). The frequencies were continuously distributed over about an octave of bandwidth: 350 -650 kHz for the zooplankton and 40 100 kHz for the fish. Some of the animals were rotated over all angles of orientation in one or two planes and in one-degree steps. The echoes were examined in both the frequency and time domains. In the time domain, pulse-compression processing was applied in order to resolve individual features of the animals. The data were classified using both physics-based and statistics-based algorithms. Size, gross anatomical group, and sometimes orientation information could be inferredfrom the data.

show abstract

Section: Examplesmentioning

confidence: 99%

Broadband Acoustic Classification of Individual Zooplankton and Fish: A Review of Recent Work

STANTON,

CHU,

MARTIN TRAYKOVSKI

et al. 2023

Acoustical Oceanography 2001

View full text Add to dashboard Cite

show abstract

Hydroacoustic measurement of detritus from the Delaware Bay estuary

Massa

Bosma²

OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158)

View full text Add to dashboard Cite

During spring run-off there is a significant quantity of detrital material in the water of the Delaware Bay estuary. Collected samples show that the detritus is comprised of approximately 88% grass, primarily phrugmites austruZis and spartinu alfernifloru.Detrital material was measured hydroacoustically using a 420kHz digital echosounder, first in a controlled laboratory test and then on site. Controlled tests on both small matted masses and individual grass strands produced signals clearly visible (6-15 dB) above background noise. Field tests were performed using a ship-mounted downward looking sonar and echo integration software to characterize and quantify the detrital biomass by depth strata. A vertical series of plankton nets, slightly downstream of the echosounder, and flow velocity measurements by a 1200kHz acoustic doppler current profiler (ADCP) slightly upstream provided groundtruth information of local concentrations.

show abstract

Acoustic classification of zooplankton

Cited by 2 publications

References 9 publications

Broadband Acoustic Classification of Individual Zooplankton and Fish: A Review of Recent Work

Broadband Acoustic Classification of Individual Zooplankton and Fish: A Review of Recent Work

Hydroacoustic measurement of detritus from the Delaware Bay estuary

Contact Info

Product

Resources

About