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For example, the Antarctic ice sheet can be divided into basins, [1] and most of Libya is included in the Mediterranean Sea basin even though almost no water from the interior actually reaches the sea.
A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the drainage divide, [1] made up of a succession of elevated features, such as ridges and hills.
1. Pacific Northwest Basin; 2. California River Basin; 3. Great Basin; 4. Lower Colorado River Basin; 5. Upper Colorado River Basin; 6. Rio Grande River Basin
A structural basin is a large-scale structural formation of rock strata formed by tectonic warping of previously flat-lying strata into a syncline fold. They are geological depressions , the inverse of domes .
The Pacific Basin is bounded by the Continental divide to the east and Pacific Ocean to the west; the basin excludes the endorheic Great Basin in the west. The Great Basin has a closed loop boundary encompassing substantially all of Nevada, the western half of Utah and parts of Oregon, California, Idaho, and Wyoming.
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.
A false-colour satellite photo of Australia's Lake Eyre Image credit: NASA's Earth Observatory Lake Eyre Basin (Queensland, New South Wales, Northern Territory, South Australia), which drains into the highly variable Lake Eyre and includes Lake Frome.
The Pacific Ocean is also an active, shrinking oceanic basin, even though it has both spreading ridge and oceanic trenches. Perhaps the best example of an inactive oceanic basin is the Gulf of Mexico, which formed in Jurassic times and has been doing nothing but collecting sediments since then. [15]