GG281 Lecture Notes - Lecture 4: Electric Dipole Moment, Baseflow, Sodium Chloride
Document Summary
Week 4, lecture 1 (week 3, no lectures) The tracer is added to the stream as one unit or in one slug". The cloud of tracer mixes with the stream and moves towards the sample point in the stream. The discharge is calculated by determine the total area under the curve related to changes in the quantity of nacl that is detected from baseflow (pre nacl spike) to baseflow (post nacl spike) The tracer solution is injected into the stream at a constant rate for a period of time for the downstream sampling point tracer concentration reaches a steady equilibrium. The constant injection equation simply tells ius how much the original tracer solution has been diluted relative to its original concentration. More accurate method than the velocity-area method in small rough, irregular channels with high turbulence. Distance between points must be long enough to ensure mixing of tracer occurs. Important to keep tabs on stream flow because .
