GGR217H5 Lecture Notes - Lecture 7: Effective Porosity, Sorption, Desorption
Document Summary
Delta s term in water balance: soil moisture, groundwater, snow and ice. Change in storage: when inflow and outflow are not equal. Stored freshwater: oceans, seas and bays, ice caps, glaciers, permanent snow. Water in this zone is considered soil moisture. Soil water is key in controlling evapotranspiration. Infiltration: movement of water from soil surface into the soil. Redistribution: subsequent movement of infiltrated water in vadose zone. Exfiltration: evap from upper layers of soil. Recharge: movement of percolating water from unsaturated zone into saturated zone (ground water) Capillary rise: movement of water from saturated zone upward into unsaturated zone due to surface tension. Water table: level below which the ground is saturated (denoted by an upside-down triangle. Soils commonly described and classified according to their type and texture. Soil particles <2. 00mm divided into 3 soil textural groups: clay, silt, sand. Soil surface layers of fragmented and weathered rocks broken down by physical and chemical processes.
