click below
click below
Normal Size Small Size show me how
H2O&Hydrologic Cycle
introduction to hydrogeology
Question | Answer |
---|---|
water | |
hydrologic cycle | basic framework for understanding fw resources & their response to climate change and human activities |
gw as a resource | largest source of available fresh water on the planet |
precipitation | warm, moist air rises and cools |
evaporation controls | energy source transport mechanism |
potential evaporation | under unlimited supply of water |
actual evaporation | from soil surface, limited by availability of water |
transpiration | evaporation of water from plants water when they open stomata to take CO2 for photosynthesis. Water flows from roots to leaves (PE) |
evapotranspiration | evaporation + transpiration (ET) |
streamflow | baseflow • steady input of groundwater that sustains streamflow over long time periods stormflow • runoff of rainfall and snow melt that causes high discharge, lasting days to weeks |
discharge(Q) | volume of water that flows past a gauging station in an unit time interval (m3/s) |
watersheds | an area over which water falling on the surface will drain into a river or lake surface water only |
what does water balance rely on? | principle of mass conservation |