GEOL 1001 Study Guide - Final Guide: Flow Velocity, River Source, Indian Subcontinent
Document Summary
***streams remove excess water from the landscape and carry it eventually to the sea. ***stream flow begins as moving sheetwash(thin surface layer of water. ***water in streams come from standing bodies splitting through outlets, sheetwash on the surface, and groundwater. ***stream channels form by downcutting and lengthen by headward erosion. ***stream discharge indicates the amount of water passing through a cross section of the stream at a given time. ***discharge depends on factors such as drainage area and climate. ***water in streams tends to be turbulent, complicating calculation of average velocity. ***streams erode by scouring, breaking, and lifting, abrasion, and dissolution. ***sediments are then transported and dissolved load, suspended load, or bed load. ***the character of stream changes with flow distance. ***near the headwater source gradient is steep, discharge is low, sediments are coarse, and channels are straight and rocky. ***toward the mouth gradient flattens, discharge increases, grain sizes are smaller, and channels describe broad meander belts.
