An analysis of the earths surface covered by water and the oceans and is too salty to drink

The water cycle known scientifically as the hydrologic cycle refers to the continuous exchange of water within the hydrospherebetween the atmospheresoil water, surface watergroundwaterand plants. Water moves perpetually through each of these regions in the water cycle consisting of following transfer processes: Precipitation, at a rate of Tt per year over land, has several forms:

An analysis of the earths surface covered by water and the oceans and is too salty to drink

The major ions are conservative. This means that they have constant ratios, to one another and to salinity, in almost all ocean water. Another way of saying this is that sea salts have constant composition. The main exception is where freshwater is mixing with seawater.

River water has a different composition than seawater, for example, it contains more calcium ion. Sea salts mostly came from the weathering of rocks on land the cations and from the interior of the earth anions. The weathering of rock on land is a slow process of breakdown by water, with dissolved carbon dioxide, and that makes it slightly acidic.

Igneous volcanic rocks do not contain enough anions to be the source of mineral-laden water to the oceans.

An analysis of the earths surface covered by water and the oceans and is too salty to drink

Now, sedimentary rocks are the source. In the past, volcanoes and, probably, an initial rapid release when the earth melted were the source.

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Rivers carry the dissolved ions to the ocean. Weathering may have been somewhat faster on the early earth, but even at the present rate it would take only about 8 to million years to replace all the salts in seawater with those in the river inflow.

Since this is much less than the age of the Earth and the oceans, some processes must remove the salts from seawater to keep them from building up to even higher concentration.

Ocean salt composition and concentration is in "steady state". This means that it does not change significantly over time. Evidence indicates that sea salt concentration and composition has been about the same for 1. The tolerances of bacteria that probably lived 3. The "steady state" results from the removal rate of salts from the ocean being equal to the input rate.

This balance holds because the removal rate of salts is related to their concentration, and increases when their concentration increases.Oceans hold 97% of surface water, glaciers and polar ice Humans and other animals have developed senses which enable them to evaluate the potability of water by avoiding water that is too salty or putrid.

Most of this is ingested through foods or beverages other than drinking straight water.

Where Does My Water Come From? - Water Education Foundation

it is rather difficult to drink too much. Planet Earth, also known as the blue planet, has oceans covering three quarters of the Earth’s surface. Oceans have a Words | 2 Pages Analysis of Land Surface Temperature for Temporal and Spatial Variability Model for Climate Change -a Case Study of Bangladesh- Why Sea Water Is Salty; The Effects of Global Warming - Words.

Why is the ocean salty? the USGS Water Science School. USGS Home Contact USGS Search USGS. If you get into folk stories and mythology you will see that almost every culture has a story explaining how the oceans became salty. The answer is really very simple. Salt in the ocean comes from rocks on land.

too. Rivers and surface runoff . Pour water into the "ocean" basin until about one-fourth of the mountain slope is covered (as shown). to a solid (ice), to a gas (water vapor). Water in oceans and lakes is typically liquid; but it is solid ice in glaciers, and often water vapor in the atmosphere.

Water at the surface of the ocean.

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Ocean in the Earth System. What is the Earth system and more fundamentally, what evaporation make the water hot and salty. This surface water is then transported northward in the Gulf Stream Laurentide ice sheet covered much of Canada and the northern tier .

Ocean water is very salty, much too salty for us to drink, so in the oceans it stays. That leaves only about 3% for all other water on Earth, which is all freshwater. But even most of that is not.

Water Temperature - Environmental Measurement Systems