Dynamic Planet B/C

crazy77
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Re: Dynamic Planet B/C

Postby crazy77 » March 2nd, 2011, 1:02 pm

For 2, just look at the map, find the river and estimate the area of the basin. For 5, look at the flood graph, divide it into 30 year chunks and read the height of the tallest bar in each chunk. Average that, and that's the 30 year flood.
As for the diagram in A, I'm guessing a little here but I believe the location of the letters represents a map view of their geographical position. The number is the hydraulic head, and the lines are isolines for hydraulic head. The arrow indicates the hydraulic gradient.

but for number two when i do that i get much larger numbers than 80 and 60 km

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Re: Dynamic Planet B/C

Postby ramyar » March 2nd, 2011, 5:31 pm

What equations do we need to know for Division B?
Also, does anyone know a good site to learn about identifying water feature on a map?

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Re: Dynamic Planet B/C

Postby personasaurus rex » March 2nd, 2011, 5:39 pm

What equations do we need to know for Division B?
Also, does anyone know a good site to learn about identifying water feature on a map?
there's not really anything you need to/can learn, just memorize or have the list of topo map features on your notes. check the USGS site for the official topo map symbols
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The Eviscerator
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Re: Dynamic Planet B/C

Postby The Eviscerator » March 2nd, 2011, 5:56 pm

What equations do we need to know for Division B?
I'm not sure about Division B, but in Division C you need to learn the Chezy and Manning equations.

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Re: Dynamic Planet B/C

Postby Mr. Cool » March 2nd, 2011, 6:15 pm

What equations do we need to know for Division B?
I'm not sure about Division B, but in Division C you need to learn the Chezy and Manning equations.
Yeah there's no equations for B because as far as I know the rules are the same and Chezy and Manning says C only.
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Re: Dynamic Planet B/C

Postby ramyar » March 3rd, 2011, 4:22 pm

whats thermal stratification?

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Re: Dynamic Planet B/C

Postby personasaurus rex » March 3rd, 2011, 4:25 pm

whats thermal stratification?
thermal - heat
stratification - layering
thermal stratification - heat layering (in a lake)
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Re: Dynamic Planet B/C

Postby The Eviscerator » March 3rd, 2011, 4:38 pm

whats thermal stratification?
thermal - heat
stratification - layering
thermal stratification - heat layering (in a lake)
The layers are the epilimnion, thermocline, and hypolimnion.

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Re: Dynamic Planet B/C

Postby personasaurus rex » March 3rd, 2011, 4:40 pm

whats thermal stratification?
thermal - heat
stratification - layering
thermal stratification - heat layering (in a lake)
The layers are the epilimnion, thermocline, and hypolimnion.
thermocline aka metalimnion: that is the correct term thermal stratification-wise, although they are the same thing.
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Re: Dynamic Planet B/C

Postby FueL » March 3rd, 2011, 7:12 pm

What equations do we need to know for Division B?
Also, does anyone know a good site to learn about identifying water feature on a map?
We might need to know how to calculate stream discharge.

Here's the pdf for USGS map symbols: http://egsc.usgs.gov/isb/pubs/booklets/ ... ymbols.pdf

Thermal stratification is the unequal heating of the water column. In summer the top layer is the hottest portion of the lake, and in winter it's coolest. At middle latitudes you have "turnovers" twice a year when the top layer cools (fall) or warms (spring), making the water temperature the same throughout the lake. This allows the water to be mixed very easily by winds, so you don't see stratification.
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