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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Impacts of Electrofishing on Fish <br /> <br />Review I Electric Fields in Water 11 <br /> <br />12000 <br /> <br /> <br />(Water conductivity, c = 500 j.JS/cm) <br /> <br />10000 <br /> <br />e8000 <br />~ <br />~ <br />:::L <br />'geooo <br />a:I <br />N <br />E <br />~ <br />:::L4000 <br /> <br />J = cE <br />P = JE = CE2 <br /> <br />Power density <br />P, j.JW/cm3 <br /> <br />Lower graph <br />/ <br /> <br />Current density <br />J, j.JA/cm2 <br /> <br /> <br />2000 <br /> <br />o <br />o <br /> <br />2 s <br />Voltage Gradient, E, V /cm <br /> <br />4 <br /> <br />5 <br /> <br />2000 <br /> <br /> <br />(Water conductivity, c = 500 pS/cm) <br /> <br />1500 <br /> <br />Lower left corner <br />of. upper graph <br /> <br />Power density <br />P, pW/cm3 <br /> <br />., <br />E <br />(,) <br />~ <br />:::L <br />'g 1000 <br />a:I <br />N <br />E <br />;? <br />:::L <br /> <br />Current density <br />J, pNcm2 <br /> <br />500 <br /> <br />o <br />o <br /> <br />0.5 1 <br />Voltage Gradient, E, V/cm <br /> <br />1.5 <br /> <br />2 <br /> <br />Figure 6. Changes in current density and power density relative to voltage gradient at a water <br />conductivity of 500 J.1S/cm. For other conductivities, adjust the values along the vertical axis in direct <br />proportion to the change in conductivity (e.g., for half the conductivity, 250 J.1S/cm, halve the values <br />along the y axis). <br />