Write a short notes on the following:a. Rectangular and trellis drainage patterns.b. Parallel and annular drainage patterns.c. Radial and centripetal drainage patterns.d. Dendrite and annular drainage patterns.
The rectangular pattern shows some degree of
resemblance to trellised drainage pattern as tributary streams in both the
patterns join their master streams almost at the right angle but the confluence angle in the trellised pattern is guided
by the strikes and dip angle of the rock beds while it is determined by the
lines of weaknesses (e.g. faults and fractures and joints) of the rocks in the
rectangular pattern.
Parallel drainage pattern comprises numerous
rivers which are parallel to each other and follow the regional slope. This
pattern is more frequently developed on uniformly sloping and dipping rock
beds such as cuestas or newly emerged coastal plains.
Annular pattern, also known as ‘circular
pattern’ is formed when the tributaries of the master consequent streams are
developed in the form of a circle.
Radial drainage pattern, also known as
centrifugal pattern, is formed by the streams which diverge from a central
higher point in all directions.
Centripetal or inland drainage pattern is opposite to the radial drainage pattern
because it is characterized by the streams which converge at a point which is
generally a depression or a basin.
The dendritic pattern on the ground is such that the network of tributaries of various
orders and magnitudes of the trunk or master stream resemble the branches and
roots and rootlets of a tree.
Annular pattern, also known as ‘circular
pattern’ is formed when the tributaries of the master consequent streams are
developed in the form of a circle.
The rectangular pattern shows some degree of resemblance to trellised drainage pattern as tributary streams in both the patterns join their master streams almost at the right angle but the confluence angle in the trellised pattern is guided by the strikes and dip angle of the rock beds while it is determined by the lines of weaknesses (e.g. faults and fractures and joints) of the rocks in the rectangular pattern.
Parallel drainage pattern comprises numerous rivers which are parallel to each other and follow the regional slope. This pattern is more frequently developed on uniformly sloping and dipping rock beds such as cuestas or newly emerged coastal plains.
Annular pattern, also known as ‘circular pattern’ is formed when the tributaries of the master consequent streams are developed in the form of a circle.
Radial drainage pattern, also known as centrifugal pattern, is formed by the streams which diverge from a central higher point in all directions.
Centripetal or inland drainage pattern is opposite to the radial drainage pattern because it is characterized by the streams which converge at a point which is generally a depression or a basin.
The dendritic pattern on the ground is such that the network of tributaries of various orders and magnitudes of the trunk or master stream resemble the branches and roots and rootlets of a tree.
Annular pattern, also known as ‘circular pattern’ is formed when the tributaries of the master consequent streams are developed in the form of a circle.
