GEOG 3610 Lecture Notes - Lecture 2: Fluid Mechanics, Throughflow, Stream Gauge
Document Summary
Lecture 2: hydrologic cycle: hydrologic science: science of the waters of the earth including, occurrence-origins, distribution, circulation, physical and chemical properties, reaction with the environment, relationship to life, hydrology: closely related to other natural sciences. The physical, chemical and biological components of the hydrologic cycle occur within all components of the earth system- atmosphere, oceans, solid earth, ice sheets, rivers, lakes, biosphere. Precipitation: cloud that precipitates but never reaches the surface of the earth evaporates before it reaches the ground (virga) Infiltration: the entry of water into the soil. Evaporation: occurs when water is changed from a liquid to a vapor. Transpiration: process by which plants release water vapour to the atmosphere. Evapotranspiration: evaporation and transpiration as one process (difficulty in separating the 2, more than half of the water that enters the soil is returned to the atmosphere through this process (et) Runoff: flow of water over (and through the soils), eventually making its way to surface water systems.