GEOG 1350 Chapter 8: River Flooding

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ambermallard485

10 Jan 2012

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8. 1 intro to rivers: surface flow is known as run off, runoff ratio : output/input. Streams are tributaries of larger streams or rivers. Drainage basin is the region drained by a single stream. Is also known as, watershed, river basin, or catchment. Longitude profile is a graph showing downstream changes in a rivers elevation load. Caused by chemical weathering of rock and sediment. Hydrologists combine measurement of: flow velocity (v, cross-sectional area of flow (a, discharge (q) (m cubed /s) Is the volume of water that moves through a cross- section of a river per unit of time, calculated by: As cross-sectional area decreases the flow velocity increases, to maintain a constant discharge. Delta is a triangular or irregularly shaped deposit in water. Channel patterns: braided large number of intersecting active channels. Wide and shallow compared to meandering channels (cid:149) (cid:149) (cid:149) Occurs when a lot of coarse bed load is present.

Related Questions

Suppose a power plant delivers energy at 867 MW using steamturbines. The steam goes into the turbines superheated at 649 K anddeposits its unused heat in river water at 283 K. Assume that theturbine operates as an ideal Carnot engine. If the river flow rateis 39.2 m3/s, calculate the average temperature increase (inCelsius) of the river water downstream from the power plant.

b)What is the entropy increase per kilogram of the downstream riverwater?

Final question in my physics course...pls help :/

Suppose a power plant delivers energy at 835 MW using steamturbines. The steam goes into the turbines superheated at 566 K anddeposits its unused heat in river water at 284 K. Assume that theturbine operates as an ideal Carnot engine.
a. If the river flow rate is 35.2 m3/s, calculate the averagetemperature increase (in Celsius) of the river water downstreamfrom the power plant.
b. What is the entropy increase per kilogram of the downstreamriver water?

A fisherman sets out upstream on a river. His small boat,powered by an outboard motor, travels at a constant speed v instill water. The water flows at a lower constant speed vw. Thefisherman has traveled upstream for 2.37 km when his ice chestfalls out of the boat. He notices that the chest is missing onlyafter he has gone upstream for another 17.6 minutes. At that point,he turns around and heads back downstream, all the time travelingat the same speed relative to the water. He catches up with thefloating ice chest just as he returns to his starting point. Howfast is the river flowing? Solve this problem in two ways.
(a) First, use the Earth as a reference frame. With respect to theEarth, the boat travels upstream at speed v - vw and downstream atv + vw.
___ km/h

(b) A second much simpler and more elegant solution is obtained byusing the water as the reference frame. This approach has importantapplications in many more complicated problems, such as calculatingthe motion of rockets and satellites and analyzing the scatteringof subatomic particles from massive targets.
___ km/h

GEOG 1350 Chapter 8: River Flooding

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