Consider a farm, 1000 m square, on a day with high atmospher ie pressure of 103 kN/m'. Below this farm is an aquifer containing 5 million eubie meters of water.

Over the next few days, a low pressure system rolls in and the atmospherie pressure drops to 99 kN/m. At the prevailing temperature of 10°C, water has a bulk modulus of E-2.10x10 kN/m. Draw a sketch of this situation, When the pressure drops, will the water compress or expand? What will be the change in the volume of water in the aquifer in m'?