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REMOTE SENSING FOR THE MONITORING OF URBAN GROWTH PATTERNS

Urban areas are the most dynamic region on earth. Their size has been constantly increased during the past and this process will go on in the future. Especially in less developed countries a strong trend towards concentration of people in urban areas can be observed. To understand urban growth remote sensing imagery is a reliable source. A long term growth study for the Phoenix, AZ metropolitan area was carried out on a mid scale level for a period of 30 years. This study used satellite imagery from several sensor systems and an object oriented image analysis and classification approach. The change results of the six periods investigated have been analyzed in terms of growth direction and distance. Overall several typical growth stages could be assigned to the development of the city. The outcome could be a basis for the comparison of different cities with the same scheme.