aquifer的示例

• Then the water composition approximately oscillates at each point of the aquifer in phase with the water velocity.

• The efficiency of the mechanism may be one of the selection factors at some stages of the chemical evolution in the aquifer.

• The alternating water flow produces temperature and water composition oscillations in the aquifer.

• A watershed development program aiming at recharging aquifers, facilitating sustainable groundwater use, is the focus of this study.

• According to the mechanism, the particles in an aquifer are moved by an alternating flow of ground water.

• The proposed mechanism permits the concentration of particles in some regions of the aquifer (in so-called attractors).

• Starting in the late nineteenth century, farmers began using groundwater from this extensive aquifer to supplement the highly variable surface supplies.

• Let us assume that over a semiperiod the particles travel a small distance compared with the size of the aquifer.

• Geothermometry and chemical and isotopic compositions can be used to assess changes in aquifer status during production.

• An important example is the extraction (appropriation) of resource units from a renewable resource stock such as fish, rangelands, groundwater aquifers, or forests.

• The topography and chaotic terrain may favor a hydrothermal aquifer as the original setting where hematite formed.

• Under such conditions, nitrate can be leached and can contaminate the shallow aquifer which is also a source of drinking water.

• Irrigators can also get ground water or contingent water rights, which can be used to fill dams or recharge aquifers.

• These values, however, do not measure the other non-timber benefits of the forest, only its contribution to aquifer recharge.

• The data may suggest that growing lowland rice during the wet season could reduce the amount of nitrate leached to the shallow aquifer.