Blar i Brage IMR på emneord "redskapsforsøk"
Viser treff 1-20 av 154
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1. Kort oppsummering av forsøk med rist i snurrevad. 2. Monteringsbeskrivelse
(Rapport fra senter for marine ressurser;Nr. 8 - 1993, Working paper, 1993-01-05) -
A field intercomparison between a miniature CTD and the Neil Brown serial 1223 CTD- profiler
(ICES CM Documents;1989/C:24, Working paper, 1989)During a survey in Lofoten in may 1989 a new miniature CTD which is being developed at the Inst. of Marine Research was mounted to the ship`s ordinary serial 1223 CTD- profiler on 10 different CTD- stations. Using the ... -
A method to reduce survey bottom trawl variability
(ICES CM Documents;1991/B:39, Working paper, 1991)A technique for limiting the variability of trawl doorspread is described. In addition, modifications of trawling technique which enable the doors to stay upright and maintain constant ground contact under different ... -
A new 3 axis current speed sensor for measurements of microstructure velocities
(ICES CM Documents;1985/C:15, Working paper, 1985) -
A new miniature instrument for in situ measuring, processing, recording and display of oceanographic properties
(ICES CM Documents;1987/C:6, Working paper, 1987)The paper describes the design philosophy and functions of a new general purpose oceanographic instrument which is presently being tested as a prototype. The instrument combines established oceanic sensors with ... -
A new system for automatic STD data acquisition from randomly positioned observers
(ICES CM Documents;1991/C:21, Working paper, 1991)The Inst. of Marine Researche in Bergen has since 1935 on a regulary basis acquired data from fixed hydrographic stations on the Norwegian coast. The data are collected by local residents via water samplers and reversing ... -
A PC-based echo integrator system appliable for school structure analyzis
(ICES CM Documents;1991/B:43, Working paper, 1991)A low cost system for integration of echo signals on a PC has been developed. The system calculates the area backscattering strength in surface and bottom layers, and is designed both for the purpose of conventional ... -
A simple system for recording time series of data from a mobile platform as a function of its position
(ICES CM Documents;1997/EE:8, Working paper, 1997)By installing recording instruments on board, Inst. of Marine Research has since 1935 collected temperature and salinity data from waters being trafficed by passenger ships from Bergen to Kirkenes and and from cargo ships ... -
A stripping method for Atlantic halibut (Hippoglossus hippoglossus L.)
(ICES CM Documents;1987/F:40, Working paper, 1987)A stripping-board was built and tested on a broodstock of halibut ranging from 8 to 150 kg body weight. The smooth surface of the neophrene mattress minimized the loss of mucus and reduced the stripping stress ... -
Acoustic sampling volume for cod
(ICES CM Documents;1989/B:5, Working paper, 1989)This is expressed through the effective equivalent beam angle * for cod as represented by measurements of the tilt angle dependence of target strength. The functional form of * is approximated for each of several behaviour ... -
Advances in Bergen Echo Integrator
(ICES CM Documents;1993/B:28, Working paper, 1993)The Bergen Echo Integrator (BEl) is a software system designed for convenient postprocessing of echo sounder data. BEl is realized in international standards and is essentially machine independent. Development of BEl for ... -
Akustisk styring av motor for å åpne/lukke luke i styrbare tråldører og funksjonstester av nytt rullegear på semipelagisk rigget bunntrål om bord i M/S ”Fangst” i august 2014
(Rapport fra Havforskningen;Nr. 26-2014, Working paper, 2014-10) -
Assessing the effect of intra-haul correlation and variable density on population estimates from marine surveys
(ICES CM Documents;1991/D:14, Working paper, 1991)In a previous paper (Pennington and Vølstad, Biometrics 47, 1991) it was suggested that reducing the size of the sampling unit generally used in marine surveys could increase the precision of abundance estimates. But if ... -
Assigning values of target strength and equivalent beam angle in acoustic surveys of fish
(ICES CM Documents;1991/B:34, Working paper, 1991)Contrary to popular opinion, the equivalent beam angle (~) is not determined solely by the transducer directivity. Rather, like the target strength TS, it also depends on the scattering properties of the target fish, but ... -
Automatic calibration of the sensors used in a miniature STD instrument
(ICES CM Documents;1988/C:13, Working paper, 1988)The paper describes a system for simplified calibration of a new STD instrument. When measuring, the raw data from the instrument conductivity, temperature and pressure sensors are fed into a microprocessor inside the ... -
Behaviour of Norwegian spring spawning herring in relation to underwater light
(ICES CM Documents;1988/B:24, Working paper, 1988)The Norwegian coastal purse seiners, with shallow nets, have experienced difficulties in catching the herring due to their natura! behaviour being located too deep during day time and toe scattered during night time. ... -
Bergen Echo Integrator: An Introduction
(ICES CM Documents;1989/B:9, Working paper, 1989)The design of a new echo integrator system is outlined. The B.E.I. is based on preprocessed data from the new SIMRAD EK500 scientific acoustic measurement system. Raw data are displayed and interpreted on a graphics ... -
Biological and economic implications of a multi-gear fishery for greenland halibut (Reinhardtius hippoglossoides)
(ICES CM Documents;1995/S:5, Working paper, 1995)This paper focuses on the level and distribution of fishing mortality in a multigear fishery, and its effect on biological and economic parameters. The Greenland halibut stock in ICES Sub-areas I and Il is at a historically ... -
Calibration reflector
(ICES CM Documents;1989/B:4, Working paper, 1989)Calibration of scientific echo sounders and integrators entails, inter alia, measurement of the dynamic range. This can be done by repeating on-axis measurements of echoes from each of two different standard targets. ... -
Catch comparison between rockhoppers and bobbins ground gear on the Norwegian bottom sampling trawl
(ICES CM Documents;1988/B:31, Working paper, 1988)In a study aimed at improving the reliability of the Norwegian bottom sampling trawl, comparative fishing between standard bobbins gear and rockhopper ground gear were carried out in the Barents Sea. The catch ratios ...