Influence of Waves Against Behaviour of the Double Drift Net in the Waters

Nomura, Masatsune; Mori, Keishiro; Taketomi, Hajime

doi:10.2331/suisan.26.570

NIPPON SUISAN GAKKAISHI

1960

DOI: 10.2331/suisan.26.570

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Influence of Waves Against Behaviour of the Double Drift Net in the Waters

Masatsune Nomura¹,

Keishiro Mori²,

Hajime Taketomi³

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1991

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“…[1][2][3] When considering the enmeshing and entangling efficiency of gillnets, the shape of gilinets suspended vertically under water is a principally important factor. Hamuro1) made a series of field experiments with a drift gillnet and found out that its catching efficiency is closely related to the deformation of the meshes.…”

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confidence: 99%

Changes in the Mesh Shape of Framed Plane Net Exposed to Regular Waves.

Yamane¹,

Nishinokubi²

1991

NIPPON SUISAN GAKKAISHI

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We studied the changes in mesh shapes, using simple models made of knotted and knotless nettings, to present basic data for mesh deformation.The models, the framed plane nets, were submerged parallel to the waves in a channel device. At one end of the upper corners of the model, two small load cells connected to a data recorded were used to measure the fluid force actting on the model.The motion of the framed plane nets was recorded by a video camera at 30 frames/sec. The vertical and horizontal displacements of the models were measured with a digitizer.The displacements of the models were affected by the fluid force, but the changes in the mesh openings were not proportional to the extent of displacement of the model. The results suggest that the changes in mesh opending are not affected by the kind of knot under the experimental conditions used here.

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mentioning

confidence: 99%

Changes in the Mesh Shape of Framed Plane Net Exposed to Regular Waves.

Yamane¹,

Nishinokubi²

1991

NIPPON SUISAN GAKKAISHI

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Influence of Waves Against Behaviour of the Double Drift Net in the Waters

Cited by 1 publication

References 0 publications

Changes in the Mesh Shape of Framed Plane Net Exposed to Regular Waves.

Changes in the Mesh Shape of Framed Plane Net Exposed to Regular Waves.

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