Ch16 Flashcards
Channeled movement of water along a valley bottom.
Stream flow
the unchanneled movement of surface water down a slope
Overland flow
That portion of the total terrain in which a drainage system is clearly established.
Valley
The higher land above the valley sides that separates adjacent valleys
Interfluve
An area that contributes overland flow & groundwater to a specific stream (also called a watershed or catchment) terminates at drainage divide
Drainage basin
The line of separation between runoff that descends into two different drainage basins
Drainage divide
When something is transferred to another location and set down
Deposition
- involve running water
- running water is earths most important external agent
- it is ubiquitous (everywhere except Antarctica) frozen glaciers not water.
Impact of
FLUVIAL PROCESSES
- also involves running water & FLUVIAL processes
- CHANNELED movement of watt along valley bottom. Wether tiny creek or enormous river.
Stream flow
UNCHANNELED downslope movement of water along surface water.
Overland flow
This is a drainage system of channeled (stream) flow. The portion of terrain where the drainage system is clearly established. partially or totally occupied by a channel of stream. ““Bottom and ““walls that rise above “” bottom in both sides.
Valley
No clearly established channeled flow. Higher land area between valleys. Overland flow. Higher land above valley walls that separated adjacent valleys. anything in the terrain not part of the valley is an?
Interfluve
Valley bottoms, valley sides, interfluves that drain toward the valley are the divide sub basins of
The drainage basin
Line of separation between runoff that discards in the direction of one drainage basin,
Drainage divides
the hierarchy of smaller tributary sub basins are part of the “”
Main stream basin.
1st order stream is the smallest stream, has no tributaries.
2nd order behind at the confluence of 1st order streams.
3rd order begins at the confluence of the 2nd order streams.
Stream orders.
Divide of main drainage basin.
Load
Types of load
Competence/capacity.
Transportation
Amount of loads water can carry depends on 2 things
Speed/velocity
And volume.
(And slope)
Load
When volume and speed /velocity decreases, this happens
Transportation deposition
This begins when rain falls over the lithosphere
Erosion
- Particles move downhill on slope
2. Across surface as a thin sheet
Splash erosion
Sheet erosion
- Turbulence breaks up into tiny channels.
2. fewer larger gullies. Goes from land flow to stream flow.
Rills erosion
Gully erosion
Bed load
Saltation
Traction
Dissolved (pushing)& suspended (bouncing/jumping)load.
Types of load
- Minerals mostly salts, dissolved -load
- Fine particles of clay & silt carried in suspension very slow settling speed-suspended load
- sand/gravel & large rocks- bed load.
Types of loads defined
