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1. A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels

   –1) 10.4 19.2 27.8 Two-way beam angle (dB) –20.6 –21.0 –21.0 Transducer gain (dB) 23.75 26.65 26.87 ... (m 2 ) R P 5 4 3 30 Wang et al. Figure 7: Frequency distribution of mean Sv (a) and variation of MVBS (b) for 20 ... Science, Vol. 23 (2016): 17–30 17 A post-processing method to remove interference noise from acoustic ... ) in the Southern Ocean (Greene et al., 1991). To date, only two large-scale multiship sci- entific acoustic ... data has been recognised as an important way to estimate the distribution and relative abundance of ... degraded by interference noise due to the lack of synchronisation of the acoustic instruments found on some ... of the vessels. A simple method to remove significant interference noise was introduced based on ... the utility of fishing-vessel-based acoustic data for a range of objectives. File:  Wang et al.pdf ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao

2. Status of the FIBEX acoustic data from the West Atlantic

   . As it is now more than 12 years since the FIBEX data were collected and more than nine years since the Post ... of survey area - one for each cruise (Figure 1); frequency distributions of Mean Volume Backscattering ... Strength (MVBS) - one for each cruise (Figure 2); and krill density distributions (gm-2) - one for each ... to be appropriate. Odissey (USSR) Cruise - Data Collected at 120 kHz Odissey covered two adjoining areas within ... Herwig. While there is an error factor due to the combination of data collected at 50 kHz (Walther Herwig ... are consistent with the other surveys. The authors can find no explanation for this difference. File ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Author(s): Trathan, P.N. and I. Everson

3. Surface areas of seabed within the 500 m isobath regions within the South Shetland Islands (Subarea 48.1)

   Islands (Subarea 48.1) Abstract / Description:  Bathymetric maps of two major areas within the South ... Bathymetric maps of two major areas within the South Shetland Islands were generated using several ... . 92038, USA Abstract Bathymetric maps of two major areas within the South Shetland Islands were ... (61'30's-63'12'S, 56'30'W- 62'36'W). The region around Elephant Island (60'48's-61°36'S, 53"54'W-57"00 ... to produce two large datasets for the study areas. Data used specifically for bathymetry consisted ... (UTM zone 20). To compute surface areas, the fine-scale gridded data were converted by GIS software ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 133–140 : Author(s): Jones, C.D., S.N. Sexton and R.E. Cosgrove III

4. Attribtuion of acoustic echoes to squid in the south Atlantic

   100 02:25 130 01:45 80 00:30 20 01:55 150 01:30 60 00:45 20 02:OO 70 - 100 02 ... -32.3" -42.4 -30.0" -51.35 -54.60 -45.66 -46.53 -48.04 -47.62 -41" -53.20 -40.70 -69.5 ... candidate echo-types was reduced to two; one of the potential echo-types that may have been caused ... @ ~ o H T ~ ~ ~ H o R 30He no~pai ioaa AHTKOMa 48.3, 3a OAHO TpaneHIle ~ ~ ~ H O ~ J I Y ~ I I H H ~ I M TpaJIOM 6brno ... order to characterise an acoustic signature that may be used to identify this species of squid ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Author(s): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley

5. A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey

   A QuAntified BAyesiAn MAxiMuM entropy estiMAte of AntArctic Krill ABundAnce Across the scotiA seA ... and longitude, and hence the data space is two-dimensional. A set of point values on a two-dimensional grid ... 1 000 g m–2, and two-thirds were under 10 g m–2 (see Figure 2). Methods What is Maximum Entropy ... are becoming Bayesians). This paper presents just one relatively non-mathematical argument for the use ... area. Density values for the unsurveyed off-transect portions of the survey area were inferred, and ... thus values for total biomass across the survey area, and within individual small-scale management ... estimated due to the sparseness of data in these regions. The MaxEnt formalism allows an objective choice of ... the parameters of the estimation method, and hence an objective choice of the most probable ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Author(s): Heywood, B.G., A.S. Brierley and S.F. Gull

6. Biology and harvesting of Dissostichus eleginoides around the Kerguelen Islands (Division 58.5.1)

   from year to year and highly dependent on the harvestable resources of Champsocephalus gunnari. Vital ... of the stock. Fishing effort and corresponding catches are very variable from year to year and highly dependent ... and corresponding catches are very variable from year to year and highly dependent on the harvestable resources ... statistiques de peche qui prouvent que l'on assiste a un developpement de peche dirigee. 11 est donc utile de ... 100 cm sont ainsi ages d'environ 11 ans et les individus de 160 cm depassent une lecture de 17 ans ... . Les groupes de taille les plus frequemment observes dans les captures au chalut (30-60 a 50-100 cm ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 85–106 : Author(s): Duhamel, G.

7. Status of the Polish FIBEX acoustic data from the West Atlantic

   a period as short as one or two weeks. Given the potential for krill flux in the Bransfield Strait ... la prospecci6n polaca FIBEX realizada en el Atlkntico occidental (SC-CAMLR, 1991a). Este an ... was undertaken on two separate occasions; the first calibration was carried out by Simrad acoustic engineers ... to the formula given in BIOMASS (1986): M V B S = ~ O ~ O ~ L - ~ O ~ O ~ A R - S L - V R + 20 log R. + 2aRo ... variation which has previously been reported for the area and shown to be important. File:  10trathan ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Author(s): Trathan, P.N., J. Kalinowski and I. Everson

8. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   -3910 290-707 15, 20 1293 4.71 1983/84 7 2749-3608 360-550 304 0.30 1991/92 5 3058 ... ) for two year classes: the 1991/92 year class, which showed apparently higher values than those obtained ... recruitment from two year classes were observed between our study and Siegel et al. (1997). In the case ... between environmental factors and krill variability was one of the major issues addressed at CCAMLR's ... general decrease in krill density in the study area were considered as possible reasons for this. On the ... 48.1 (Antarctic Peninsula region) from 1980 to 1996 were calculated based on logbook data from Japanese ... period. The use of different fishing strategies in response to a demand for higher product quality and a ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Author(s): Kawaguchi, S., T. Ichii and M. Naganobu

9. By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)

   ~aHMfi. H M ~ ~ T CMbICJl OIlpeAenPlTb An2 co6apamqax AaHHbIe no npMnoey pb16b1 ... 113.64 18.33 1.23 20.00 0.43 7.50 16.80 0.25 1.00 6.00 0.50 8.20 1.00 50.33 0.00 ... 1.75 1.67 1.67 No./ hour 4.00 1.85 25.35 6.84 20.36 1.90 6.00 22.95 0.85 1.44 ... 12.50 0.63 49.40 2.67 67.11 0.00 196.58 4.79 67.43 1.20 3.59 Start Time 0315 2315 ... amount of krill that was subsampled for making observations on fish by-catch. The by-catch data from the ... size (as a fraction of haul-specific krill catches) for observers collecting data on fish by-catch ... presents a brief re-analysis of the by-catch data collected on board the Chiyo Maru No. 2; means and ... variances are calculated from the delta distribution. In numbers, an average of about 14 fish were caught ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Author(s): Watters, G

10. The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3

    4 November 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... ") [Japanese brand, sizes 7 and 9; width 30 to 35 mm]; • Type III - hooks fully recurving, in one plane ... - 4800 Russian d 20 to 25 mm 120 cm 13500 Russiane 25 to 30 mm 120 cm 3200 Bulgarian 25 to 30 mm 120 ... tonnes was taken by one Bulgarian, five Russian and eight Chilean vessels. The maximum catch taken ... russe; 0,2 dans la flotte bulgare. Les differents types d'hame<;ons utilises expliquent ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Author(s): Agnew, D.J. and C.A. Moreno

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