Journal of Contemporary Urban Affairs
Vol. 8 No. 1 (2024): Journal of Contemporary Urban Affairs

Assessing the Impact of Urbanization on Flood Risk by RS and GIS: A Case Study on Istanbul-Esenyurt

ÖZER, Buse (Unknown)
YALÇINER ERCOŞKUN, Özge (Unknown)



Article Info

Publish Date
10 Mar 2024

Abstract

Floods, exacerbated by escalating urbanization, pose significant threats to life and property globally. Over the past decade, the Esenyurt district in Istanbul has witnessed a series of floods, highlighting existing flood risks. Rapid population growth in this area and dense urbanization caused by intensive construction increase flood risks. Given these factors, the study focuses on examining the historical impact of urbanization on flood risks, considering spatial and temporal changes. Landsat-8 satellite data, specifically examining NDVI, NDBI, and BU, was employed to detect building imprints and reveal their historical backgrounds for temporal risk calculations. The analysis showed a sudden increase in urbanization rates in 2016, 2017, and 2021. In the flood risk calculations, 2014 data for a return period of 100 years were used and flood inundation depth, economic damages, affected population and depth-damage function were taken into consideration. The results indicate that from 2014 to 2022, increasing urbanization led to a 32.9% increase in the population affected by floods, a 22.3% rise in potential economic damage, and a 13.6% increase in total flood risk. The relationship between flood risks, contemporary urbanization, and its economic dimensions has been evaluated to reduce risks and achieve sustainable cities.

Copyrights © 2024






Journal Info

Abbrev

ijcua

Publisher

Subject

Description

The International Journal of Contemporary Urban Affairs (IJCUA) is the interdisciplinary academic, refereed journal which publishes two times a year by Anglo-American Publications LLC. IJCUA brings together all the theories, manifestoes and methodologies on contemporary urban spaces to raise the ...