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Analysis of Built-up Area and Land Surface Temperature Relationship in Makassar City using NDBI Processing Setiawan, I. N.; Jumadi, J
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2024: Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/iseth.5363

Abstract

Dynamic development in Indonesia's Urban Areas is influenced by population growth, economy, and environmental dynamics. By mid-2023, Indonesia's population will reach 278,696.2 million, ranking fourth as the largest population in the world. Unbridled urban growth has resulted in urban restructuring, agricultural land transformation, and a decrease in the area of green open space. This leads to a decrease in air quality, an increase in surface temperature, as well as changes in land cover patterns. A similar pattern is seen in Makassar City, where a shortage of green open space (less than 30%) and land-to-building changes have increased the city's surface temperature. This study aims to analyze the distribution of built-up land, land surface temperature (LST) and the relationship of land change built in Makassar City from 2014 and 2023 using Landsat Imagery. Analysis using Landsat Imagery and Normalized Defference Built-up Index algorithm shows significant growth of built-up land in accordance with the development plan of Makassar City until 2026. The surface temperature classification indicates a significant increase from 2014 to 2023, which is associated with built-up land growth. The results of simple linear regression showed a positive correlation between built-up land area and surface temperature, with R Square reaching 34.7% in 2014 and 38.9% in 2023. These findings reflect the impact of development on Land Surface Temperature (LST) and emphasize the urgency of built-up land management to reduce the impact of heat in cities.
Dampak Fenomena Gerhana Matahari Cincin (GMC) Terhadap Perilaku Data Radiasi Matahari Hasil Observasi Lapan Pasuruan (26 Desember 2019) Subiakto, Toni; Al-Ghozali, Habib Khirzin; Jumadi, J
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2020: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.126 KB)

Abstract

Gerhana matahari cincin merupakan fenomena alam langka yang terjadi secara periodik, sehingga moment seperti ini tidak akan dapat dinikmati sewaktu-waktu. Saat terjadi GMC posisi matahari, bulan dan bumi berada pada garis lurus, dimana posisi bulan berada diantara matahari dan bumi. Dalam pengamatan GMC tersebut LAPAN Pasuruan memasang beberapa teleskop portabel dan merekam data radiasi matahari menggunakan alat Automatic Weather Station (AWS). Pengambilan data radiasi matahari untuk proses analisa pada pukul : 11.00 wib. – 14.30 wib. Ketika memasuki fase awal GMC, saat GMC dan akhir GMC, pada satu hari sebelum, saat dan setelah GMC dalam kondisi tanggal : 25 Desember 2019 (min : 32 w/m2, max : 909 w/m2 , jml : 24.685 w/m2) tanggal 26 Desember 2019 (min : 218 w/m2, max : 608 w/m2, jml : 15.419 w/m2) tanggal 27 Desember 2019 (min : 50 w/m2, max : 955 w/m2, jml : 23.592 w/m2) dengan nilai prosentase = (( jml/∑jml)x100%) maka didapat nilai prosentase pada (tgl 25 = 38,75%, tgl 26 = 24,21%, tgl 27 = 37,04%) hasil analisa menyimpulkan dampak dari fenomena GMC terhadap perilaku data radiasi matahari mengalami perubahan sebagai berikut : nilai minimal mengalami kenaikan dari biasa dibandingkan data jam yang sama pada satu hari pra dan pasca GMC jumlah radiasi tanggal 26 Desember 2019 mengalami penurunan dibandingkan data pada tanggal 25 atau 27 Desember 2019.