IDENTIFICATION OF METROPOLITAN CORE USING GEO-SPATIAL DATA FOR KOLKATA, INDIA

Sk. Mafizul HAQUE, Sumana BANDYOPADHYAY

Abstract


Metropolitan centers usually do not reveal iso-diametric spatial configurations, as they have evolved with gradual non-homogeneous transformation of land. The spatio-temporal distribution of urban functions reveals centrality towards a particular area. The preferred centre usually identifies itself with accessibility and diversity in urban activities, which is usually synonymous with the urban core. Location of urban core is a product of both horizontal and vertical zonation of urban functions. Due to its complex and dynamic character, delineation of the urban core is a challenging subject of research. Effective and uniform techniques for delineating the core area of an urban center have been developed over time as, undeniably, it is of utmost importance to the urban planners, ecologists, architects, environmentalists, economists for the study of urban dynamics. This paper attempts to use geo-spatial data and use a composite of three important criteria for identification of the urban core, i.e., Normalized Difference Vegetative Index (NDVI), Mid-wave Infra-Red (MIR) & Thermal Infra-Red (TIR) band, DN variation analysis. Further, data for two different time periods have been used to show decadal changes in the direction and extent of the dynamic nature of the core(s) vis a vis the changes in the peripheral domains as well.


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DOI: http://dx.doi.org/10.15551/scigeo.v58i2.190

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ISSN: 1223-5334; eISSN: 2284-6379. Published in Romania

 

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