The high topography in the Himalayas combined with heavy monsoon rain cause massive erosion of the mountains and sediment transport to the Bay of Bengal. Sediment transport measurements in the main rivers of eastern north India indicate that the Ganges carries 262 million tons/year and the Brahmaputra carries 387 million tons/year. 1. Assuming that (i) these sediments represent a uniform erosion of the entire high Himalayas (area of 300,000 km2) and (ii) the sediment density is 2,000 kg/m3, what is the average erosion rate of the high Himalayas? 2. These sediments are deposited in the Ganges-Brahmaputra Delta, located in the northern Bay of Bengal. The delta is 350 km wide and extend about 250 km into the Bay. What is the average deposition rate in the Ganges- Brahmaputra Delta? How can it be verified? 3. When will these sediments completely fill the Bay of Bengal (average depth 700 m)?