ISRO prepares palaeochannel map of River Saraswati
March 28th, 2013
Indian Space Research Organization (ISRO) has
prepared an integrated palaeochannel map of River Saraswati from the
origin in Himalayas to Rann of Kutchch. The origin of the mapped course
of the River Saraswati palaeochannel in North West India was linked to Himalayan perennial source through Sutlej and Yamuna Rivers.
To carry out the study ISRO used Indian Remote Sensing Satellite data
along with digital elevation model. It was observed that major Harappan sites of Kalibangan (Rajasthan), Banawali and Rakhigarhi (Haryana), Dholavira and Lothal (Gujarat) lie along the River Saraswati.
What is a Palaeochannel?
The word Palaeochannel is formed from the words “palaeo” meaning
“old” and “channel”. A palaeochannel is a remnant of an inactive river
or stream channel that has been either filled or buried by younger
sediment. The sediments that the ancient channel is either cut into or
buried by can be unconsolidated, semi-consolidated, consolidated, or
lithified. Paleochannels are formed through aggradation (depositing
sediment on their bed).
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