SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Vol. 14 No. 01 (2025): Volume 14 Nomor 1 (Maret 2025)

THE RELATIONSHIP OF RAINFALL VARIABILITY TO FLOOD EVENTS USING GOOGLE EARTH ENGINE (GEE) IN MAKASSAR CITY

Mutmainnah Ali (Universitas Negeri Makassar)
Nasrul Nasrul (Universitas Negeri Makassar)
Sukri Nyompa (Universitas Negeri Makassar)
Arfandi Arfandi (Universitas Negeri Makassar)
Rosmini Maru (Universitas Negeri Makassar)



Article Info

Publish Date
02 May 2025

Abstract

Indonesian people are most harmed by flood hydrometeorological disasters, which cause material and immaterial losses. Floods often occur in some areas of Makassar City due to high rainfall and the high density of people and buildings, especially in the rainy season. This study aims to find out: the rainfall variability in the city of Makassar for 7 years (2017-2023), a map of flood inundation areas in the city of Makassar for 7 years (2017-2023), and the relationship between rainfall variability to flood events using Google Earth Engine (GEE) in the city of Makassar. This study is quantitative descriptive, using correlation and regression analysis between rainfall variables and flood inundation area. A cloud-based processing approach. CHIRPS data was used for rainfall analysis in Makassar City (2017-2023), and Sentinel 1 to analyze the distribution of flood inundation. The results showed that 1) rainfall variability occurred in January, February, March, November, and March. With the highest coefficient of variance value with a value of 73% in November. 2) floods that often occur in the sub-districts of Manggala, Biringkanaya, Tamalate, Tamalanrea, and Rappocini. 3) There is a significant relationship between rainfall and events in Makassar City. Spatially there were 12 flood events, temporal flood events for 7 years (2017-2023) occurred in December, January, and February. The parameters in this study are limited to rainfall and flood inundation, for that the next study is to add various relevant parametersbased on Google Earth Engine.

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Journal Info

Abbrev

sainsmat

Publisher

Subject

Description

The objective of this journal is to publish original, fully peer-reviewed articles on a variety of topics and research methods in sciences, mathematics, statistics, education, and applied science. The journal welcomes articles that address common issues in mathematics, sciences, statistics, ...