Abstract:
The Indus-Ganga-Brahmaputra are the largest river systems in South Asia, which
originate in the Himalaya and support a large number of population. The landscape
of these river systems evolved due to several phases of aggradation and incision;
varying climatic and tectonic perturbations. Therefore, it is important to understand
these processes and their forcing factors in both, time and space. Rivers like the
Satluj, Yamuna, Bhagirathi, Alaknanda, Gandaki and others that drain
orthogonally to the southern front of Himalaya, the factors governing aggradation
and incision, and their relationship to climate and tectonics are reasonably well
understood. However, the Indus River that flow through the arid and semiarid
regions of NW- Himalaya has recieved less attention.
The hydrological budget of the Indus River is determined from glacial melt,
precipitation from the westerlies and Indian summer monsoon (ISM). The whole
region are controlled by tectonics surrounding the Indus-Tsangpo Suture zone
(ITSZ), western syntaxis and Karakoram fault.
