GEOL 105 Lecture Notes - Lecture 4: Urban Runoff, Global Warming, Sodium Chloride
Document Summary
4/11/16 7:12 pm (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Global movement of water between different water storage compartments. Distribution in space and over time a problem. * 75-80% of earth is covered in water * Down flow: precipitation and infiltration (groundwater gets recharged) Groundwater flow (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) * most fresh water comes from ice caps and glaciers. Drainage basin or watershed * small streams have a drainage basin * Drainage divide * top of the hill; continental divide * Stream order and size of drainage basin * small to larger to larger; feeds into larger water supplies (creeks, rivers, streams, etc) * Sediment yield in surface runoff * how much sediment ends up in our runoffs * Geological factors: type and structure of soils and rocks. Climatic factors: type, intensity, duration, and distribution of precipitation. Vadose zone (unsaturated zone, zone of aeration)
