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Hugtakasafn : Eitt hugtak
ÍSLENSKA
bergmálsmæling
ENSKA
acoustic survey
DANSKA
akustisk undersøgelse, akustisk opmåling
Svið
sjávarútvegur
Dæmi
[is] væntanlegt
[en] Herring acoustic survey
Skilgreining
[en] acoustic survey in fishing is one of the research methods that can detect the abundance of target species using acoustic detectors. For example, many pelagic fisheries are generally very scattered over a broad ocean and difficult to detect. Hence survey vessel with acoustic detector emits sound waves to estimate the density of plankton and fish shoal. Generally, the transducer is put under water, which is linked to an echo sounder in the vessel which records the shoals of fish as "marks" on a screen or paper trace. Then the density and number of marks are converted into biomass (Wikipedia)

Rit
[is] Reglugerð framkvæmdastjórnarinnar (EB) nr. 1639/2001 frá 25. júlí 2001 um lágmarksáætlanir og útvíkkaðar áætlanir Bandalagsins vegna gagnaöflunar í sjávarútvegi og um ítarlegar reglur vegna beitingar reglugerðar ráðsins (EB) nr. 1543/2000

[en] Commission Regulation (EC) No 1639/2001 of 25 July 2001 establishing the minimum and extended Community programmes for the collection of data in the fisheries sector and laying down detailed rules for the application of Council Regulation (EC)

Skjal nr.
32001R1639
Orðflokkur
no.
Kyn
kvk.