Mapping and spatial characterisation of major urban centres in parts of south eastern Nigeria with Nigeriasat-1 Imagery
Igbokwe, Joel I.
Many Urban centres in Nigeria are experiencing population explosion as many people continue to migrate from the rural areas into the Urban cities. This uncontrolled population growth is confronting urban planners and developers with numerous problems. These problems include over-stretched urban infrastructures, massive urban environmental degradation, urban flooding, deforestation as more settlements are constructed. As a result urban renewal projects suffer, essential amenities are not provided adequately, urban landuse are not properly planned and essential spatial data are lacking. To tackle some of the above problems there has been an increase in demand for spatial map data for many urban centres in the country. The use of satellite imagery provides wonderful opportunity to satisfy these demands. With many high-resolution satellite images now available, the essential spatial maps for urban centres can be produced with less difficulties. NigeriaSat-1 satellite system provides medium resolution (32m) images in three spectral bands Green, Red and Near Infrared. In this study, NigeriaSat-1 image data was used to map the distribution of major urban centres in parts of South Eastern Nigeria. The study also includes spatial characterisation of essential growth features of these cities by comparing the generated maps with existing topographic and plannimetric maps of the areas.
Event: 5th FIG Regional Conference for Africa : Promoting Land Administration and Good Governance
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