Discussion
Which one of the following is the 'Areal' aspect of the basin as per the Morphometric analysis ?
(1) Drainage density
(2) Bifurcation ratio
(3) Stream frequency
(4) Circularity ratio
Answer: D
The areal aspects are (1), (3) and (4), so the answer is (1), (3) and (4).
Morphometric analysis of a drainage basin is divided into linear, areal and relief aspects. Areal aspects relate to the basin's area and shape: drainage density (total stream length per unit area), stream frequency (number of streams per unit area) and circularity ratio (basin area relative to a circle of the same perimeter).
The bifurcation ratio, the ratio of the number of streams of one order to the number of the next higher order, is a linear aspect, so every option containing (2) is wrong.
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