https://ir.vidyasagar.ac.in/jspui/handle/123456789/6750 Mon, 27 Apr 2026 10:38:24 GMT 2026-04-27T10:38:24Z https://ir.vidyasagar.ac.in/jspui/handle/123456789/6802 Title: Status of Land Conversion and Urban Sprawling Over Coastal Tract of West Bengal: a Study on Haldia Municipality Area Authors: Mondal, Dipankar; Jana, Subrata; Paul, Ashis Kr. Abstract: The fragile coastal areas are facing tremendous challenges in response to the recent trend of population growth and urbanization in the context of global and regional climate change and related events. The Haldia municipality area is imposed to coastal inundation and associated vulnerability as it is situated in the low-lying fragile littoral deposition of a soft sedimentary surface. The accelerated rate of flourishing urban infrastructural development ensures over the muddy surface, low-lying areas, wetland, coupled with the degradation of agricultural land and natural vegetation in conjunction with the magnitude of population growth. The haphazard urban infrastructural development leads to tidal inundation and storm rainwater logging, which also creates drainage problems in most of the urban areas. The land use and land cover (LULC) changes and landscape alteration has produced the environmental problems associated with ecosystem destruction. The six major types of LULC classifications have been done using the geospatial techniques in the four different Landsat images of 1991, 2001, 2011 and 2018. The LULC conversion has also been analyzed during 1991–2018 for the entire study area. After the establishment of the port-industry based urban centre in 1967, the urban infrastructural development concentrated over the elevated levee landscape in the IOC, Durgachack and Township areas during 1991. Afterwards, the built-up areas significantly increased in the low-lying areas of the central and western part through land-filling. The built-up area has tremendously grown from 4.72 km² to 29.36 km² during the study period, mostly occupying the agricultural land, muddy fields and vegetation areas. Description: PP:01-14 Sat, 01 Jan 2022 00:00:00 GMT https://ir.vidyasagar.ac.in/jspui/handle/123456789/6802 2022-01-01T00:00:00Z https://ir.vidyasagar.ac.in/jspui/handle/123456789/6801 Title: Dual Impacts of the COVID-19 Pandemic and Amphan Supercyclone on the Smallholding Betel Leaf Cultivation and Trade in West Bengal Authors: Hudait, Manas; Patel, Priyank Pravin Abstract: The COVID-19 pandemic induced lockdown has severely affected farm sustainability and brought hardships to farmers, agricultural labourers and market intermediaries. Here we examine its impact on betel leaf cultivation and trade in West Bengal. Data for this study was perforce gathered via telephonic interviews and from secondary sources due to travel restrictions. With this perishable crop being entirely dependent on its supply chain linkages to cater to its various markets, the lockdown has stymied the entire process. Moreover, the occurrence of the Amphan super-cyclone in the region has physically damaged many farms. Therefore, even with markets partially reopening, meeting demands from impaired/destroyed plantations and poor storage facilities is difficult. Bereft of crop insurance, farmers have suffered substantial losses. While some have resorted to selling one-third of their crop locally, the price obtained seldom covers the overheads. Meanwhile traders have been hampered in marketing the leaves due to continuing transportation restrictions. Description: PP:15-31 Sat, 01 Jan 2022 00:00:00 GMT https://ir.vidyasagar.ac.in/jspui/handle/123456789/6801 2022-01-01T00:00:00Z https://ir.vidyasagar.ac.in/jspui/handle/123456789/6800 Title: Preliminary Assessment of Oceanic Chlorophyll Concentration using MODIS-Aqua Ocean Color Satellite Data Authors: Majumdar, Ankit; Yogeswaran, Nithiyanandam Abstract: Ocean chlorophyll concentration is a crucial element in marine biology. The concentration is determined by the ocean current, nutrient levels, and temperature. Satellites like MODIS-Aqua, MODIS-Terra, Ocean sat, and VIIRS-SNPP is commonly used to measure ocean chlorophyll. This study examines the change in chlorophyll concentration from 2014 to 2019 globally and in India. A seasonal shift in India’s fishing potential was also studied in 2018. The study used MODIS-Aqua satellite Level 3 Ocean Colour data from NASA Ocean Colour. The data from the Giovanni portal is retrieved to analyse the monthly and seasonal mean chlorophyll concentrations globally and in India. Calculating zoning numbers revealed possible fishing spots. The results of the temporal study show that August (0.35 mg/m3) and September (0.34 mg/m3) have the highest average concentration of chlorophyll in the World. In India, the same months have the highest average concentrations of 0.80 mg/m3 and 0.73 mg/m3, respectively. Gujarat and West Bengal offer the best fishing possibilities all year. An extensive analysis can help define daily fishing potential based on chlorophyll, SST, and winds. Description: PP:32-44 Sat, 01 Jan 2022 00:00:00 GMT https://ir.vidyasagar.ac.in/jspui/handle/123456789/6800 2022-01-01T00:00:00Z https://ir.vidyasagar.ac.in/jspui/handle/123456789/6799 Title: Assessment of Physicochemical Characteristics of Water Quality along Balua Ghat, Yamuna River in Prayagraj Metropolitan City, India Authors: Sharma, Vishwa Raj; Bisht, Kamal; Sanu, Shubham Kumar Abstract: Water is one of the most precious resources on the earth and with the increasing population and reckless use it’s becoming scarce day by day. Most of the populous cities of India are facing this problem with a higher to a lesser degree of its intensity. Allahabad the ancient historical city of India situated on the confluence of the Ganga and its tributary the Yamuna also facing the problem of clean and potable water. To examine the water quality and its various features analysed the physicochemical characteristics of the Yamuna river at Balua Ghat, Allahabad. For this purpose Landsat satellite images of the year, 2009 and 2019 were used and analysed through Arc GIS. Parameters like BOD, COD, pH and temperature were analysed to understand the plight of water quality, which is also substantiated with the inputs of the local people of the study area. The study shows that along the course of the river Yamuna built-up area is increasing at an unprecedented rate and open space is shrinking very rapidly. Various parameters of water show that the water quality is under great stress. Dumping of drainage waste in the river and unplanned slum settlements along the river are basically responsible for deteriorating water quality. Description: PP:45-54 Sat, 01 Jan 2022 00:00:00 GMT https://ir.vidyasagar.ac.in/jspui/handle/123456789/6799 2022-01-01T00:00:00Z