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Outline Of Hydrology
The following outline is provided as an overview of and topical guide to hydrology: Hydrology – study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability. What ''type'' of thing is hydrology? Hydrology can be described as all of the following: * a branch of science ** a branch of natural science *** a branch of physical science **** a branch of Earth science ** a branch of geography *** a branch of physical geography Essence of hydrology *Water *Hydrologic cycle *Cryosphere *Origin of water on Earth * Water distribution on Earth Branches of hydrology * Hydrometry – the measurement of the different components of the hydrologic cycle * Chemical hydrology – the study of the chemical characteristics of water * Ecohydrology – the study of interactions between organisms and the hydrologic cycle * Hydrogeology – the study of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Distribution On Earth
Most water in Earth's atmosphere and on its crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is ''saline'' or ''salt water'', with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land. In all, water from oceans and marginal seas, saline groundwater and water from saline closed lakes amount to over 97% of the water on Earth, though no closed lake stores a globally significant amount of water. ''Saline'' groundwater is seldom considered except when evaluating water quality in arid regions. THERE IS MORE LAND UNDER THE WATER. The remainder of Earth's water constitutes the planet's ''fresh water'' resource. Typically, fresh water is defined as water with a salinity of ''less than 1 percent that of the oceans'' - i.e. below around 0.35‰. Water with a salinity bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
