Life of earth is linked to availability of water and rivers provides water to sustain the human civilization. Ganga river is one of the longest river in India and  is associated with sediment transport and meandering. Ganga river originate in the Himalayas, and it carries lot of sediments. Sediment deposition prevent  any river from flowing straight and cause meander. Gandak Continue Reading »

Since the 1960s the Central Asian lake that used to be known as the Aral Sea has almost completely dried out, due to human activity. This environmental disaster has created a new desert known as the Aralkum (the “Aral Desert”), which now has a size of 255 km × 255 km across that has appeared since 1960 on the seabed Continue Reading »

On the bucket list of several of us to might be to move towards the poles at least once in a life time to witness the breath-taking Northern or Southern lights on our planet. On Earth we don’t have global Auroras but move to Mars and we may witness one! In fact Mars can have global or regional auroras. That’s Continue Reading »

In optical sensors, the features can be seen in the raw data with some radiometric and geometric distortions but SAR raw data are unfocused images where no feature can be seen in the image. Unlike optical sensors, signal processing algorithms are required to focus the SAR raw data. The processing of SAR raw data is always a challenge because it Continue Reading »

In March 2018, a large fissure suddenly appeared across the Nairobi-Narok highway near Mai Mahiu town in the southwestern part of Kenya. The alignment of the fissure closely along the eastern branch of the East African Rift (EAR) system led to a debate regarding its linkage with the rifting process, which is believed to split the African continent slowly. Widening Continue Reading »