Synthetic aperture radar (SAR) signals penetrate through the dry snow and cloud providing crucial data over the Himalayan temperate glaciers and complement the optical images. In the present study, RISAT- 1 C band and AWiFS images of winter/ablation period over Samudra Tapu and Gepang Gath moraine dammed lakes (MDLs) in Himachal Pradesh have been analysed.
A recent scientific correspondence in these columns noted with concern that one of the tidal inlets of the Pulicat Lake has been considerably narrowed, which could be detrimental to the lake. But a more recent satellite image of the area, which is presented here, does not indicate any reason for raising such an alarm.
