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All Journal Jurnal Geodesi Undip JEPA (Jurnal Ekonomi Pertanian dan Agribisnis) Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Media Informatika INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal Geosaintek Geoid - Journal of Geodesy and Geomatics
Wijayanti, Regita Faridatunisa
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Social Sciences Other

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Multi-Temporal Identification and Analysis of Land Surface Deformation with Land Use Land Cover in Makassar City Hamzah, Suharman; Wijayanti, Regita Faridatunisa; Anjasmara, Ira Mutiara; Sabri, Laode M; Osman, Anas
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 9, NUMBER 1, APRIL 2026
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v9i1.23368

Abstract

Rapid urbanization heightens the risk of land subsidence in Makassar City. Aim: This study analyzes and maps land surface deformation alongside Land Use and Land Cover (LULC) dynamics from 2020–2024. Methodology and Results by integrating multitemporal Sentinel-1 SAR (VV polarization) and supervised LULC classification from Landsat-8 on the Google Earth Engine platform. Annual LULC maps were produced using an SVM, yielding high accuracy (Kappa 0.893–0.988). Built-up land expanded mainly at the expense of vegetation and bare land. Deformation was inferred from temporal differences in VV backscatter (VV_diff); statistics were computed for each class. Negative VV_diff values were frequently observed in built-up and bareland areas, indicating subsidence. Significant interannual variability was observed in 2023-2024, particularly within the vegetation zones. Linear regression confirmed a strong negative deformation trend in built-up areas (slope −0.0123 dB/year). These results demonstrate a linkage between urban expansion and ground deformation. Conclusion, significance, and impact study: The approach provides a repeatable and cost-effective framework for continuous subsidence monitoring using open satellite data. GEE facilitates the open replication of workflows. The findings contribute to the field of urban planning and policy by identifying vulnerable zones, promoting risk-aware land allocation, infrastructure maintenance, and sustainable development methods for Indonesian coastal megacities and other rapidly expanding metropolitan areas.
Co-Authors Angga Pratama Putra, Angga Pratama Aprian, Syahra Dewi Bambang Bakri Budiyanto, Didik Dhina Mustikaningrum Fadjar Kurnia Hartati, Fadjar Kurnia Ira Mutiara Anjasmara, Ira Mutiara Izzaty, Atika Kartikasari, Dwirini Kurdiawan, Mamang Kusetiyohadi, Taufik Maria Agustini Muhajir Muhajir, Muhajir Niswah Selmi Kaffa Nunuk Hariyani NURUL HAYATI Osman, Anas Prabawa, Septa Erik Rahmasari, Aurellia Nabilla Sabri, Laode M Sigit Sucahyo, Mikael Bambang Sijabat, Hesekiel Suharman Hamzah, Suharman Sulistiawati, Ani Sumaryam, Sumaryam Susilo, Yunus Sutrisno , Sutrisno Totok Hendarto Ulfah, Umayya Widya, Liadira Kusuma Wirawan, Indra Yusrudin, Yusrudin