http://localhost:80/xmlui/handle/123456789/101 2026-05-07T18:44:35Z http://localhost:80/xmlui/handle/123456789/1292 Title: Tidal Behaviour and its Relation to Suspended Sediment Concentration in Selected Zones along the Hugli River, South 24 Parganas, West Bengal Authors: Chaudhuri, Subhamita Abstract: Suspended sediment concentration (SSC) of the Hugli is the key factor behind smooth operation of riverside brick kilns which thrive both solely and partly on supply of riverine sediments. The process of sedimentation depends on tidal behaviour of the river. On the left bank of the Hugli, two 72-km apart stations Kulpi in the south and Akra in the north - were selected on the basis of concentration of brick kilns. The study aims at understanding the disposition of tidal asymmetry and SSC induced by it, reflecting on the relation between availability of sediment and brick making. Monitoring of tide, analysis of SSC in water samples and dumpy level survey inside the selected brick kilns at the two stations were conducted in pre-monsoon and monsoon seasons from 2017 to 2019. The pattern of rise and fall of the tides remained unchanged for the studied period at the two stations. Asymmetry in terms of duration and velocity of tides was responsible for spatial difference in sedimentation. In this flood dominated channel flood tide travels at a faster velocity and flood phase is shorter than ebb. The sediments travel upstream with tide, recording high SSC at high tide at Kulpi but the load is unable to reach 72 km upstream at Akra. The riverine flow is much effective around the northern station causing high SSC at low tide. Mean SSC was higher in monsoon at Akra and higher in pre monsoon at Kulpi. Kulpi had higher mean SSC in both seasons and higher rate of sedimentation. Steeper incoming water gradient during incoming tide at Kulpi in both seasons brought in huge sediment load causing higher mean SSC at Kulpi. Sedimentation process was controlled by tide around the southern station but tidal effect was dampened by riverine flow around the northern station. 2025-06-01T00:00:00Z http://localhost:80/xmlui/handle/123456789/1265 Title: “The Inter-Generational Changing Socio-Cultural Scenario of Munda Tribal Population: A Geographical Analysis of a Part of Indian Sundarban Region Authors: Ranajit Sardar, Guided by Prof. Sukla Basu 2021-01-01T00:00:00Z