GEOG 101 Lecture Notes - Lecture 14: Hydrograph, Bed Load, Surface Tension
28 Sep 2018
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Document Summary
Colors separate the stream by which an area drains. Stream carries moving water through one or more channels. Amount of water varies with time and is measured in volume per time=discharge. The plot of discharge versus time creates a hydrograph. Runoff from steep drainage basin is fast & water arrives downstream at once. Runoff from basin with gentle slopes is spread out over time has less peak flow. More complex the basin shape water shows up at different times. More complex the hydrograph reflects something about basin shape or precipitation event. Smaller subsidiary channels are tributaries: they spread out discharge over time. Types of drainage patterns: dendritic parts join in corner, radial parts join to create big dome in center, structurally controlled parts in between valleys. Viscosity (resistance to flow) and surface tension act to keep water smooth as in slow moving water. Moving water has inertia (tries to keep moving with the same speed and direction)
