drainage pattern的意思|示意

English Word Drainage Pattern: Usage Explanation

Drainage pattern is a term used to refer to the morphology of river networks, including the shape and spacing of streams and drainage basins. It is used in physical geography to describe the patterns of streams, rivers, and lakes in a particular drainage basin.

The main types of drainage pattern in physical geography are:

1. Dendritic drainage pattern

Dendritic drainage patterns are the most common, and they resemble tree branches. These patterns can be found in areas that have homogenous rocks and relatively unconstrained topography.

2. Trellis drainage pattern

Trellis drainage patterns are also common in areas where streams follow relatively straight routes. The streams often follow a rectilinear pattern of drainage, resembling the pattern of a garden trellis.

3. Radial drainage pattern

Radial drainage patterns are typically found in areas of rugged topography, such as mountains and volcanoes. Streams in a radial pattern originate from a central peak or ridge and diverge in multiple directions.

4. Centripetal drainage pattern

Centripetal drainage patterns are also called annular or ring-shaped patterns, as streams in this pattern originate from a common centre and diverge outward. These types of patterns are often found in areas of low relief, such as in glacial plains.

5. Deranged drainage pattern

Deranged drainage patterns are the least common and are usually found in areas of extreme topography, such as El Niño and La Niña events. The streams in this pattern usually lack a coherent pattern.

In physical geography, drainage patterns provide important insights into the evolution of a drainage basin. They can also provide information about the underlying geology of the area, such as the type of rock and the age of the landscape.