ASSESSING URBAN GROWTH IN GREATER SURABAYA USING GOOGLE EARTH ENGINE: AN EVALUATION OF BUILT-UP AREA EXPANSION IN INDONESIAN SECONDARY CITIES

Nugroho  Purwono; Danang Budi Susetyo; Seftiawan Samsu Rijal; Gina Koedatu Syaripah; Siti  Munawaroh

doi:10.2298/IJGI230608004P

Authors

Nugroho Purwono National Research and Innovation Agency, Jakarta
Danang Budi Susetyo National Research and Innovation Agency, Jakarta
Seftiawan Samsu Rijal Universitas Brawijaya, Marine Science Study Program, Faculty of Fisheries and Marine Science, East Java
Gina Koedatu Syaripah Universitas Pendidikan Indonesia, Department of Geography Education, West Java
Siti Munawaroh Universitas Padjadjaran, Faculty of Geological Engineering, West Java

DOI:

https://doi.org/10.2298/IJGI230608004P

Keywords:

urbanization, built-up expansion, secondary city, GEE catalog, Greater Surabaya

Abstract

Urbanization in Indonesia's cities is increasing, leading to various impacts, including negative consequences due to insufficient investment in local public infrastructure. Urbanization assessment primarily relies on examining changes in built-up areas over the past decade. These changes serve as an indicator that can be effectively derived from remote sensing data. In our study, we applied remote sensing data from the Google Earth Engine (GEE) catalog to delve into the urbanization dynamics within Greater Surabaya area, Indonesia. We employed satellite imagery from Landsat 7 Enhanced Thematic Mapper Plus (ETM+) and Landsat 8 Operational Land Imager and Thermal Infrared Sensor (OLI TIRS) for 2012 and 2022. We used Support Vector Machine (SVM) classification techniques to construct precise urban expansion models. Our analysis revealed distinct urban expansion trends in Mojokerto and Sidoarjo, which contrast with the relatively stable urban development trends in northern Surabaya due to the construction of toll roads. The findings provide valuable inputs for urban management, necessitating targeted interventions and strategies to address the urbanization disparities between these two areas. It underscores the critical importance of resource allocation, infrastructure development, and urban planning initiatives, with a specific focus on Gresik, to ensure sustainable urban growth and mitigate potential challenges associated with rapid expansion.

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