GEO 330 Lecture Notes - Lecture 9: Water Table, Global Issue, Fossil Water
Document Summary
Water: hydrologic cycle, flow of water b/w 5 natural resources a. i. Groundwater: . 6: water spends different amounts of time in each reservoirs b. i. Groundwater: 100"s to 10,000"s of years: groundwater and aquifers a. Approximately 50% of u. s relies on it: aquifers b. i. Can be described in terms of water budget b. iv. Can be simple or complex b. v. reserve: amount of water in aquifers b. vi. Recharge: any inflow that increase the amount of water in aquifers b. vii. Mostly used in agriculture: problem in arid regions d. i. Salt water intrusions: china, india, and u. s are major group producers, 2 types of aquifers involved f. i. May or may not equal rate of discharge f. ii. Non- replenishable (fossil) reserve can only be discharged: aquifers in india and north china plain are replenishable, dry land farming: crops rely on natural rainfall, case studies, north china plain water table a. i. Area produces over of country"s wheat and 1/3 of corn a. iii.
