SDN:L22::NETT0036
English umbrella net
English umbrella net
English umbrella net - Macaulay and Daly (1987)
accepted
A rectangular net 200 cm on a side and 300 cm long made from 0.22 mm nylon mesh is designed to fit through a hole in an ice flow closed, and open once underneath. A messenger is used to close the mouth opening at a specific depth prior to retrieval though the ice [Wiebe and Benfield 2003 Plate 11 C].