The Space-Borne SBAS-DInSAR Technique as a Supporting Tool for Sustainable Urban Policies: The Case of Istanbul Megacity, Turkey

Remote Sensing

Fabiana Calò³  Saygin Abdikan¹  Tolga Görüm⁵  Antonio Pepe³  Havvanur Kiliç²  Füsun Balik ᗪnli²  Zhong Lu⁴  Norman Kerle⁴ 

[1] Department of Geomatics Engineering, Engineering Faculty, Bulent Ecevit University, Zonguldak 67100, Turkey;Department of Geomatic Engineering, Civil Engineering Faculty, Yildiz Technical University, Esenler, Istanbul 34220, Turkey;Institute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, via Diocleziano 328, Napoli 80124, Italy;;Institute for the Electromagnetic Sensing of the Environment (IREA), National Research Council (CNR) of Italy, via Diocleziano 328, Napoli 80124, ItalyGeography Department, Istanbul University, Laleli, Istanbul 34459, Turkey;

关键词: Differential SAR Interferometry (DInSAR);    Small BAseline Subset (SBAS);    urban deformations;    hazard;    risk;    urbanization;    Istanbul;    Turkey;   

DOI  :  10.3390/rs71215842

来源: mdpi

【 摘 要 】

In today’s urbanizing world, home of 28 megacities, there is a growing need for tools to assess urban policies and support the design and implementation of effective development strategies. Unsustainable practices of urbanization bring major implications for land and environment, and cause a dramatic increase of urban vulnerability to natural hazards. In Istanbul megacity, disaster risk reduction represents a challenging issue for urban managers. In this paper, we show the relevance of the space-borne Differential SAR Interferometry (DInSAR) technique as a tool for supporting risk management, and thus contributing to achieve the urban sustainability. To this aim, we use a dataset of high resolution SAR images collected by the TerraSAR-X satellite that have been processed through the advanced (multi-temporal) Small BAseline Subset (SBAS)-DInSAR technique, thus producing spatially-dense deformation velocity maps and associated time-series. Results allow to depict an up-to-date picture of surface deformations occurring in Istanbul, and thus to identify urban areas subject to potential risk. The joint analysis of remotely sensed measurements and ancillary data (geological and urban development information) provides an opportunity for city planners and land professionals to discuss on the mutual relationship between urban development policies and natural/man-made hazards.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.