Evolution of river confluences and associated hydromorphological dynamics: Insights from Babla-Bhagirathi Rivers in India during 1781-2025 - Aznarul Islam; Suman Deb Barman; Balai Chandra Das; Sirina Parvin; Nishith Kumar Maji; Sekh Mohinuddin; Abhijit Hor; Subodh Chandra Pal (Quaternary International, 2026)