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Improvements to the multiple-frequency method for in situ target strength measurements
% of multiple targets while allowing 90% of the resolvable single-targets to be measured Author(s ... synchronized signals from two or more adjacent split-beam transducers of different frequencies which are not ... range resolution of one or more of the frequencies. These improvements are demonstrated through ... transducer. Tolerances for matching target positions at two or more frequencies were determined to be ±0.5 m ...
Meeting Document : WG-EMM-99/38 : Autor(es): D.A. Demer (USA) and M.A. Soule (South Africa)
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Detection and quantitative estimation of krill concentrations by hydroacoustic instruments
2.107 L 1----. .1- _______ . __ .... __ . ___ _ 30 35 'ID so Figure 1 60 70 80 90 tDO ·120 ISO ... transmitter frequency. Thus, echo sounders operating at comparatively low frequencies (20-30 kHz) are much ... . Investigations over many years have proved that krill disperses extremely non-uniformly over vast areas in the ... different years and seasons. In the same area at different times, krill can form large concentrations in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Autor(es): Yudanov, K.I.
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
–60 –40 –20 Sv (dB) 0 5 10 15 20 -100 -90 -80 ... -70 -60 -50 Ping number M VB S /d B re 1m b –50 –60 –70 –80 –90 –100 M V B S (d B ... ed d at a at 1 20 k H z. S ta tis tic al v al ue s ar e re pr es en te d by 2 ... (d) 38 kHz (e) 70 kHz (f) 120 kHz -80 -74 -68 -62 -56 -50 -44 S v/d B re 1 m –1 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Autor(es): Wang, X., J. Zhang and X. Zhao
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Fishery Report: Champsocephalus gunnari (ANI) Heard Island (Division 58.5.2)
% of the level that would occur in the absence of fishing within the two years following an abundance ... 80 0 50 <1 50 <1 50 2002 3 150 <1 80 <1 50 <1 50 <1 50 2003 21 150 <1 80 <1 465 20 120 5 50 ... over recent years. Due to their low abundance observed in the current year, no assessment has been ... selectivity vector was used for C. gunnari, starting at 2.5 years and fully selected at age 3. ANI ...
Document : Site Section: Publications
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Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18
and acoustic techniques. The proposed research is pertinent to issues raised by the Scientific ... South Africa. In future years the aim is to expand the investigation and involve additional ... collaborating members. In 2018 a new Norwegian fishing vessel will be available, equipped with advanced ... coherent research plan as described in in this rev.1 proposal. Author(s): Delegation of Norway Title ...
Meeting Document : WG-FSA-17/61 Rev. 1 : Autor(es): Delegation of Norway
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Products for human consumption from krill (Euphausia superba)
months at-30°C and one month at-20°C. Dried krill of good quality could be prepared by blanching krill in ... fish burger, it gave a bitter after taste at 10% level and bitter taste at 20% level or above. The ... swelling property of the fish wafer was affected by the incorporation of krill mince. Author(s): J. Joseph ...
Meeting Document : WG-EMM-98/41 : Autor(es): J. Joseph, V. Muraleedharan, R. Thankamma and C.N. Ravishankar (India)
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e-cc-xxxi-a6.pdf
... observation in krill fisheries by two years, increase the scheme’s coverage to 80% of vessels and change the ... an analysis for the past two years of landings by toothfish vessels and port inspection frequency ... Chile advised that the reason for the absence of some information for one of its vessels was that the ... 5842E), 1 tonne (SSRU 5841E) and 123 tonnes (SSRUs 881B, C and G). 2.18 Members raised the question
application/pdf attached to:SCIC-12Meeting Report : SCIC-12
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The foraging range of Adelie penguins – implications for CEMP and interactions with the krill fishery
continental shelf. Observations at Casey and Dumont D'Urville from one season suggest such an overlap may ... not occur at these sites in normal ice years. It is suggested that an understanding of the potential ... a decision is taken to establish new CEMP sites. Author(s): Rodary, D., Thomson, R., Tremont, R ... ., Lawless, R., Gardner, H., Wienecke, B., Clarke, J.R., Kerry, K.R., Corsolini, S., Eberhard, S. Title: The ...
Meeting Document : WG-EMM-96/69 : Autor(es): Rodary, D., Thomson, R., Tremont, R., Lawless, R., Gardner, H., Wienecke, B., Clarke, J.R., Kerry, K.R., Corsolini, S., Eberhard, S.
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CCAMLR-XXIV
Full Name: Twenty-fourth Meeting of the Commission Location: Hobart, Australia Date(s): Monday ... Dissostichus spp. Delegation of Australia CCAMLR-XXIV/20 Notification of Australia’s intention to conduct an ... Statistical Division 58.4.1 Delegation of Uruguay CCAMLR-XXIV/30 Notification of an exploratory fishery in ... Celebrating twenty-five years of CCAMLR Secretariat CCAMLR-XXIV/38 CCAMLR Symposium Delegations of Australia ...
Meeting
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
distributions from surveys. ‘Two-level’ models of krill distribution are considered. These achieve overall ... concentrations; these concentrations are then located at random within the survey area. These ‘two-level’ models ... essential difficulty is that the data are collected along one-dimensional transects, whereas it is a two ... distributions from surveys. "Two-level" models of krill distribution are considered. These achieve overall ... concentrations; these concentrations are then located at random within the survey area. These "two-level" models ... density trend. Substitution of a fully random survey design by a systematic one would be a satisfactory ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Autor(es): Butterworth, D.S., D.L. Borchers and D.G.M. Miller