why does the river bed of the brahmaputra rise and what are the consequences
Answers
Answer:
Explanation:
This especially increased the amount of silt carried by the river and its tributaries. The silt was deposited on the banks downstream, and on the riverbed. Due to this heavy deposition, the river "frequently changes its course with the main channel flowing into multiple channels" hitting the river bank causing further erosion, a study published in 2014 by the Civil Engineering Department, Royal Group of Institutions explains.
The riverbed area of the Brahmaputra has increased by more than 50 per cent through erosion since the quake. According to a report on climate change published by the government of Assam in September 2015, erosion has destroyed more than 3,800 square kilometres of farmland, which is nearly half the size of Sikkim, since 1954. Due to erosion, the riverbed area has expanded from around 3,870 sq.km. estimated between 1916 and 1928 to 6,080 sq.km. in 2006. Based on the civil engineering report, between 1954 and 2008 about 4,27,000 hectares has been eroded at the rate of 8,000 hectares per year.