Explain the following : (i) The Himalayan rivers are typical examples of antecedent drainage. -Geography

Explain the following : (i) The Himalayan rivers are typical examples of antecedent drainage.  -Geography
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(i) Antecedent drainage is a river system originating before a period of uplift and folding of the land as a result of earth movements. The Himalayan rivers like Indus, Satluj and the Brahmaputra continue to cut down their valley at approximately the same rate as the uplift of the land and so maintain the general pattern and direction. So these rivers are known as Antecedent drainage. (ii) The Aravali’s alignment is parallel to the rain-bearing SW monsoon winds, so Jaisalmer does not receive any rain from the Arabian Sea branch of SW monsoon. It is also located in the rain shadow region of the Bay of Bengal branch of SW monsoon. So it does not receive any rain from the Bay of Bengal branch too.
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