part of exam 4-geo

part of exam 4-geo - Chapter 18: Stream Transport and...

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Chapter 18: •Stream Transport and Landscapes •Streams and rivers are major geological agents of change in landscapes –Transport sediment delivered to channel by mass wasting, to the ocean •Stream flow is related to the interaction of plate tectonic and climate systems •The three basic parts of a stream Valley - sloping area around the stream Channel - trough in which water flows, eroded or carved by stream Floodplain - flat area in valley level with top of channel, built of sediment deposited by stream when it overflows banks ......... but first, we need to understand a little about river hydrology…… •Water Budget of a River Surface Runoff = excess water flowing across ground surface supplies river for period of hours following rainfall or snowmelt Base Flow = groundwater discharge into stream stream flow sustained between periods of surface runoff by base flow •Stream flow & groundwater Permanent or “gaining” stream Water table intersects ground surface at stream level Stream fed by groundwater discharge = Base Flow Averaged over year, volume of runoff ≈ volume of base flow
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This note was uploaded on 10/19/2011 for the course GEO 1050 taught by Professor Staff during the Spring '10 term at UConn.

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part of exam 4-geo - Chapter 18: Stream Transport and...

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