Spatial and Temporal Dynamics of Urban Sprawl Using Multi- temporal Images and Relative Shannon Entropy Model in Adama, Ethiopia
Journal Title: Journal of Advanced Research in Geo Sciences & Remote Sensing - Year 2018, Vol 5, Issue 3
Abstract
Two very important major factors that have driven rapid growth of cities and towns are population growth and large-scale migration. Urban buildup information is required for enormous application for planning land use and management. A challenging task is to extract urban build up areas from moderate-resolution Landsat images due to intra-urban heterogeneity and spectral confusion between other land cover types. In this study, urban area was extracted from Landsat series of thematic mapper (TM) and object land imager (OLI) between 1984 and 2017 of Adama city in Ethiopia. Study chose two indices, Normalized Difference in Built-up Index (NDBI) and Normalized Difference in Vegetation Index (NDVI) to represent three major urban land use classes, i.e., built-up/barren/bare land, open waterbodies, and vegetation. Built-up area has been extracted by taking difference between NDBI and NDVI to remove water and vegetation noises and the resulting image was spectrally segmented to separate built-up areas. Derived index was utilized to plot decade difference of built-up area from 1984 to 2017. In order to compute Shannon entropy value, the study area was divided into 52 equal zones to quantify urban sprawl. The expansion of the built-up area has been revealed as a major change in the area when city area expanded substantially by six times 51.3364 (sq. km) area of 1984 (8.80 sq. km)
Authors and Affiliations
Sathianarayanan Manikandan
Keywords
Related Articles
- EP ID EP535118
- DOI 10.24321/2455.3190.201801
- Views 141
- Downloads 0
An Analysis of Site Suitability Analysis for Urban Development in Dindigul District, Tamilnadu –A Geomatic Approach
In the fast developing country like India, Decision making is becoming a big problem, mainly for the development of cities. Site suitability or site analysis is method used in GIS to determine the best place or site for...
Information Content Analysis of Landsat-8 OLI Data for Water Resources Management
Remote sensing sensors operating in the optical region of the spectrum capture reflected &/ or emitted electromagnetic radiation from the object/ features, which facilitates their identification/ detection . Beginning wi...
Shallow Tubewells Pouring the Rare Helium Gas Wells in Saugor Division, Southern Ganga Basin Region, Bundelkhab Region M.P. India
The studies on the Discovery of Helium gas in petroliferous tube wells in Saugor Division, southern Ganga Basin region has been carried out in great detail in 58 shallow Tube wells,. The discovery of the rare gas helium...
Genesis of Iron Ores from Precambrian Banded Iron Formation in the Archean Badampahar Greenstone Belt, Iron Ore Group, East Indian Shield
Banded Iron Formations (BIFs), as the name suggests, are chemically precipitated sedimentary rocks having alternating Fe-rich and Si-rich bands. The origin of BIF has always remained a debated topic of research. The BIF...
Impact of Urbanization on Water Bodies Using Remote Sensing Techniques - A Case Study of The Shrinking Ambattur Lake, Chennai, Tamilnadu, India
Ambattur Lake is located in the Ambattur taluk of the Chennai Corporation. For the past, few decades Ambattur lake has changes in its water body due to a large number of anthropogenic activities. Ambattur Lake, is a rese...