Geotechnologies in the studies about brownfields: brownfields identification in high resolution spatial imagery and redevelopment dynamic analysis of old industries in Sao Paulo

Author(s)

Amanda Ramalho Vasques

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Faculdade de Filosofia, Letras e Ciências Humanas (FFLCH/SBD)
• Defense date: 2009-11-10

Examining board members

Magda Adelaide Lombardo; Ailton Luchiari; Antonio Carlos Robert Moraes; Silvia Aparecida Guarinieri Ortigoza; Manoela Rossinetti Rufinoni

• Advisor: Magda Adelaide Lombardo

Abstract

Among the urban processes susceptible to be analyzed through the new high resolution spatial sensors, is the redevelopment of old industrial areas, presently deactivated. The building and industrial terrains that had and active use, but that were shutdown, abandoned, and are idle, are called brownfields. In the last years, some of these places have been redeveloped, changing its shapes, structures and functions, incorporating, this way, new uses. On this paper are analyzed, primarily, the theoretical issues about the brownfields - its conception, formation, redevelopment, and generated impacts. Subsequently, are presented the geotechnologies methodologies application on the brownfields studies and the discussion of its potentialities. The objective of this research was to study the use of remote sensing and the Geographic Information System (GIS) to identify potential brownfields areas and analyse the redevelopment process of old industrial spaces in the districts of Brás, Mooca and Belém, in the city of São Paulo. In this context, the aerial photos and Quickbird images, integrated in a GIS environment, showed to be of great aid in the brownfields identification, as well as to the redevelopment analysis process, that was updated and supported with field work in the quoted districts. The supervised classification accuracy of the land use in the Quickbird image over the Software TNTmips, shows Kappa of 86.29% to the Brás district, 89.41% to Mooca and 89.25% to Belém; and the overall accuracy presented 88.53% to Brás, 91.85% to Mooca and 90.25% to Belém - results considered excellent. So, this paper contributes with the presentation of new study possibilities over brownfields, taking advantage of the geotechnologies and high resolution spatial imagery potentialities to the intra-urban analysis. Beside this, the analyzes issues on this research indicate theoretical and methodological ways to a better comprehension of these areas and to the quest for more adequate interventions, seeking to solve urban problems. (AU)