Bøger af Sanat Kumar Guchhait

This book discusses the issue of riverbank erosion and its associated causes, risks and social challenges in the Bengal Delta. The book covers the physical processes and indicators of riverbank erosion such as sediment flux and channel morphology, the anthropogenic and natural causes of erosion, the social consequences that afflict vulnerable communities who depend on the delta for their livelihoods, and potential solutions to harmful erosion processes such as bioengineering methods and increased community governance through a socio-hydrological approach. Though the Bengal Delta is one of the most populated regions in the world, few publications exist that discuss riverbank erosion as a major threat to environmental and livelihood sustainability in a comprehensive manner. The book will fill this gap in research for students and researchers in geography and environmental sciences, and will engage regional planners, decision makers and policy makers to further their understanding of the complex social and environmental aspects of the Bengal Delta associated with persistent and worsening riverbank erosion.

This Brief analyses and discusses the laterites in the Bengal Basin. The book highlights: (1) the definition, identification and classification of ferruginous materials, (2) the mode of laterite formation and its other horizons, (3) processes and theories of lateritisation, (4) determination of laterite ages, (5) recognition of palaeogeomorphic and palaeoclimatic significance and (6) geo-chronology and reconstruction of former lateritized landscapes. The chapters cover the tectono-climatic evolution of north-south laterite profiles of the north-western Bengal Basin on the Rajmahal Basalt Traps, Archean Granite-Gneiss, Gondwana Sandstones, Palaeogene Gravels and Older Palaeo-Deltaic Alluvium. The book uses advanced field-based studies, quantitative analysis and thematic mapping to cover various areas of palaeogeography and regolith geology of the Bengal Basin in connection with laterite genesis, palaeoweathering, tectonic geomorphology, Quaternary geomorphology and pedogeomorphology.It introduces laterites as a potential stratigraphic marker in Indian geology by explaining their palaeogeomorphic and palaeoclimatic significance.This Brief is a comprehensive resource to researchers, students and academicians of geography, geomorphology and geology working on laterites.