Question

c) Show that when ga >g the Penman-Monteith equation simplifies to d) Use the approximation in part c) to estimate the transpiration rate. e) What would be the transpiration rate if the canopy offered no stomatal resistance ie ge >ga. Could forests survive if they had to support such transpiration rates? 8. (15 marks - 5 points cach) A confined aquifer has a source of recharge. The saturated hydraulic conductivity K of the aquifer is 50 m/day, and the effective porosity n is 0.2. The piezometric head in two wells located 1km apart is 55 m and 50 m respectively, from a common datum. The average thickness of the aquifer is 30 m, and the average width of aquifer is 5 km Compute: a) The specific flux of water through the aquifer (flux per unit area) in meters per day b) The flux of water through the aquifer's total cross sectional area in litres per day c The average travel time from the recharge zone to a point located 4 km downstream Recharge 1000 m 30 m

Answer 1

= 0,2 5 s AH CSF) Aus er water 33500 oId seeba η, = 0.25 xi03 3200