Limitations of target detection in horizontal acoustic surveys of extremely shallow water bodies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00510131" target="_blank" >RIV/60077344:_____/19:00510131 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/19:43899247 RIV/60076658:12520/19:43899247
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0165783619301201?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0165783619301201?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fishres.2019.05.005" target="_blank" >10.1016/j.fishres.2019.05.005</a>
Alternative languages
Result language
angličtina
Original language name
Limitations of target detection in horizontal acoustic surveys of extremely shallow water bodies
Original language description
The effect of target strength oscillations, generated by surface or bottom-induced sound multi-pathing, can cause serious errors in estimates of fish biomass in horizontal acoustic surveys of extremely shallow inland waters (depth 1.7-2 m). In this study, the oscillations were shown to occur in both windy and calm weather conditions, and depended on the target's depth and range from a transducer. In calm weather the oscillations were more pronounced and targets that were located close to the water surface and further from the transducer were most affected. Errors in target strength reached up to an 8 dB difference from the theoretical value. Fish abundance and size structure estimates are likely to be affected even more than biomass estimates. To avoid boundary-induced errors in target strength, simulations of fish biomass surveys demonstrated that the data-processing range should be limited to 10 m from the transducer for surveys conducted in extremely shallow waters.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
40103 - Fishery
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fisheries Research
ISSN
0165-7836
e-ISSN
—
Volume of the periodical
218
Issue of the periodical within the volume
OCT
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
94-104
UT code for WoS article
000477786600010
EID of the result in the Scopus database
2-s2.0-85065659214