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Benthic Trawls - ELISE MARIE. HANSEN

angļu valoda
2015-04-29
11,48 € 17,66 €

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A benthic trawl is an enormous net dragged across the ocean floor. The net is held aloft with large floats, and kept down with a heavy steel trawl door and weights. The pocket of the net is known as the "codend." The drag marks left behind from the trawl are caused by the rollers, up to five tonnes each, which Bring up a dust cloud from the sea floor that can last for days. Benthic trawling has been used fo ... Pilns apraksts

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Aprašymas

A benthic trawl is an enormous net dragged across the ocean floor. The net is held aloft with large floats, and kept down with a heavy steel trawl door and weights. The pocket of the net is known as the "codend." The drag marks left behind from the trawl are caused by the rollers, up to five tonnes each, which Bring up a dust cloud from the sea floor that can last for days. Benthic trawling has been used for over 500 years.

Vairāk informācijas

Autors ELISE MARIE. HANSEN
Izdevējs CreateSpace Independent Publishing Platform
Izlaides gads 2015
Vāka tips Mīkstais vāks
EAN 9781511968270
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11,48 € 17,66 €