Re: Geography
i got excited when i saw geography, as i am pretty good at geography especially for an ignorant american, but river discharge...maybe U.S. and britain have different terms, but in the U.S. geography means the location of the countries of the world, and geoLOGY would mean river discharge and other "earth"-"dirt"-"rock"-"river" stuff. but probably its different in britain.
so anyways...i don't know to much about river discharge....not even sure exactly what u mean by river discharge...hmm....discharge...hmm..
well obviously rain creates rivers. either first creating a lake or ice ( on mountains) which than produces a river from it or the rain just directly collects into a river due to gravity and the slope of the surrounding area/earth. more rain more water in the rivers (duh).
so if less water is evaporating from the ocean, than u have less rain, and less rivers.
but also, if it's too hot, after evaporating, the water moister in the air can't condense, forming clouds, and become cold and big enough to form rain droplets and rain as well. so if it's too hot water will "forever" stay stuck in the air and not come back down to earth. less water has obvious dire implications.
temperature of the earth and salinity of ocean water (effected by the fresh water glaciers melting and mixing with the ocean salt water, which is caused by global warming) effects the deep currents of the ocean, which act as regulating cooling agents and as heat/energy distrubution'ers for planet earth. if this contrinues to be messed up, at some point the entire earth will undergo a catastrpohic change, which would include humanity.
water/rivers is affected by gravity (duh) and causes the water to run from a higher elevation (height) to a lower elevation (height) AND folows a path of least resistance (as everything does). this is what creates its "snake'y" shape.
of course natural things or man-made things can block (dam) up a river. so if this build up gets past or breaks through, u have a major torent/flood of water. before this happens u have little water/drought in the below area.
the warmer the temperature the greater the evaporation of course.
the dirt that get's carried by the water down and piles up in the "flood plains" below is called silt and it's very good for farming and crops.
is any of this what u were looking for or no ?