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Title: River Habitats Survey and Waterways Breeding Bird Survey
Author: J H Marchant
Author: David G Noble
Author: David I Leech
Author: S N Freeman
Author: Environment Agency
Document Type: Monograph
Annotation: Environment Agency Project ID:EAPRJOUT_1639, Representation ID: 608, Object ID: 2746
Abstract:
The relationship between the diameter of ring anodes and their equivalent electrical resistance has been measured for a range of anode designs currently in use by workers in the UK. In addition, equivalent resistance values have been measured for two designs of cathode. Measured values did not correspond well with published methods of calculating equivalent electrode resistance by theoretical means. The empirical relationship between anode ring diameter, water conductivity and equivalent resistance has been modelled. Results from the modelled data are within 1% of the data measured. Knowledge of the equivalent electrode resistance has also enabled a model to be constructed to determine the input power required to energise an electric fishing system for a range of water conductivities and applied anode voltages. Voltage field measurements have also been mapped for a range of anode ring sizes and these too have been modelled over a range of input voltage values. KEYWORDS Electric fishing, equivalent electrode resistance, voltage gradient. R and D TECHNICAL REPORT W2-076/TR iv 1.
Publisher: Environment Agency
Subject Keywords: River; Survey; Habitat; Bird; Rhs; Wbbs; Waterways; Breeding bird
Extent: 41
Permalink: http://www.environmentdata.org/archive/ealit:4866
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