KORELASI EMISI SO2 ERUPSI GUNUNG LEWOTOBI LAKI-LAKI DENGAN PARAMETER CUACA DI WILAYAH KEPULAUAN NUSA TENGGARA

Ripa Khodijah, - and nanang Dwi Ardi, - and Andi Suhandi, - (2025) KORELASI EMISI SO2 ERUPSI GUNUNG LEWOTOBI LAKI-LAKI DENGAN PARAMETER CUACA DI WILAYAH KEPULAUAN NUSA TENGGARA. S1 thesis, Universitas Pendidikan Indonesia.

Abstract

Aktivitas vulkanik Gunung Lewotobi Laki-laki yang meningkat hingga Status Level IV (AWAS) ditandai oleh pelepasan sulfur dioksida (SO2) melebihi 10.000 ton/hari serta pembentukan kolom erupsi setinggi 8 km, yang secara potensial berdampak terhadap kondisi cuaca lokal. Penelitian ini bertujuan untuk menginvestigasi korelasi antara emisi SO₂ dan variabilitas parameter cuaca di wilayah Kepulauan Nusa Tenggara, mencakup temperatur permukaan, konsentrasi aerosol sulfat, ketebalan optik awan (Cloud Optical Thickness/COT), serta curah hujan. Analisis dilakukan dengan menerapkan metode Cross-Correlation Function (CCF) pada data satelit OMI, AIRS, MERRA-2, MODIS, dan GPM. Hasil analisis menunjukkan adanya hubungan positif antara peningkatan emisi SO2 dan perubahan parameter atmosfer dengan rentang lag time serta koefisien korelasi yang bervariasi. Peningkatan suhu permukaan teramati +1 hari setelah puncak erupsi dengan koefisien korelasi sebesar 0.50. Konsentrasi aerosol sulfat mencapai puncaknya +16 hari kemudian dengan koefisien korelasi 0.60, diikuti oleh kenaikan ketebalan optik awan +21 hari dengan koefisien korelasi 0.39, serta peningkatan curah hujan +22 hari pasca-erupsi dengan koefisien korelasi 0.55. Temuan ini mengindikasikan kontribusi emisi SO₂ dalam memodifikasi kondisi cuaca lokal, yang penting untuk mitigasi bencana dan adaptasi iklim di wilayah rawan erupsi, serta memperkaya pemahaman dinamika atmosfer akibat aktivitas vulkanik. The volcanic activity of Mount Lewotobi Laki-laki, which escalated to Level IV (AWAS) status, was characterized by the release of sulphur dioxide (SO2) exceeding 10,000 tons per day and the formation of an eruption column reaching 8 km in height, potentially impacting local weather conditions. This study aims to investigate the correlation between SO2 emissions and the variability of weather parameters across the Lesser Sunda Islands region, including surface temperature, sulfate aerosol concentration, cloud optical thickness (COT), and precipitation. The analysis was conducted using the Cross-Correlation Function (CCF) method applied to satellite data from OMI, AIRS, MODIS, MERRA-2 And GPM. The results indicate a positive relationship between increased SO2 emissions and changes in atmospheric parameters, with varying lag times and correlation coefficients. A rise in surface temperature was observed one day after the peak eruption, with a correlation coefficient of 0.50. Sulphate aerosol concentration peaked 16 days later with a coefficient of 0.60, followed by an increase in cloud optical thickness after 21 days with a coefficient of 0.39, and enhanced precipitation 22 days post-eruption with a coefficient of 0.55. These findings suggest that SO₂ emissions contributed significantly to the modification of local weather conditions through associated atmospheric processes. This knowledge is essential for improving disaster risk mitigation and climate adaptation strategies in volcanic-prone regions and for advancing the scientific understanding of atmospheric dynamics influenced by large-scale volcanic activity.

	Text S_FIS_2108073_Title.pdf Download (336kB)
	Text S_FIS_2108073_Chapter1.pdf Download (139kB)
	Text S_FIS_2108073_Chapter2.pdf Restricted to Staf Perpustakaan Download (718kB)
	Text S_FIS_2108073_Chapter3.pdf Download (614kB)
	Text S_FIS_2108073_Chapter4.pdf Restricted to Staf Perpustakaan Download (932kB)
	Text S_FIS_2108073_Chapter5.pdf Download (114kB)
	Text S_FIS_2108073_Appendix.pdf Restricted to Staf Perpustakaan Download (363kB)

Item Type:	Thesis (S1)
Additional Information:	https://scholar.google.com/citations?hl=id&user=ohZ0QN8AAAAJ ID SINTA Dosen Pembimbing Nanang Dwi Ardi : 257201 Andi Suhandi : 6005865
Uncontrolled Keywords:	Kata Kunci: Gunung Lewotobi Laki-laki, Emisi Sulfur Dioksida SO2, Parameter cuaca, Kepulauan Nusa Tenggara, Lag time. Keywords: Mount Lewotobi Laki-laki, Sulfur dioxide SO2 emission, Weather parameters, Lesser Sunda Islands, Lag time.
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions:	Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Program Studi Fisika - S1
Depositing User:	Ripa Khodjah
Date Deposited:	26 Aug 2025 04:46
Last Modified:	26 Aug 2025 04:46
URI:	http://repository.upi.edu/id/eprint/136146

Actions (login required)

View Item