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From left to right: a field with a source, a field with a sink, a field without either. In the physical sciences, engineering and mathematics, sources and sinks is an analogy used to describe properties of vector fields. It generalizes the idea of fluid sources and sinks (like the faucet and drain of a bathtub) across different scientific ...
Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.. Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population.
A sink/basin in a bathroom Enamel washbowl and jug Sink in Croatian National Theater in Zagreb, Croatia. A sink (also known as basin in the UK) is a bowl-shaped plumbing fixture for washing hands, dishwashing, and other purposes. Sinks have a tap (faucet) that supplies hot and cold water and may include a spray feature
[4] [n 1] It is, however, a useful term since it is quickly understood by English-speakers across the world, whereas more polite terms vary by region. " Lavatory " (from the Latin lavatorium , " wash basin " or "washroom") [ 5 ] was common in the 19th century and is still broadly understood, although it is taken as quite formal in American ...
The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km 2), the Congo (4 million km 2), the Nile (3.4 million km 2), the Mississippi (3.22 million km 2), and the Río de la Plata (3.17 million km 2). The three rivers that drain the most water, from most to least, are the Amazon, Ganges, and Congo ...
Thermohaline circulation determines the relative ages of the water in these basins. Because organic material, such as fecal pellets from copepods , sink from the surface waters into deeper water, deep water masses tend to accumulate dissolved carbon dioxide as they age.
Unvegetated basins can have a large range in drainage densities, from low to high. Drainage density is related to the ease at which channels can form. According to Montgomery and Dietrich’s equation, drainage density is a function of vertical hydraulic conductivity .
Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin.It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.