Fadhilah, Nur Aini Qolbi (2023) Analisis Spasio-Temporal Konsentrasi SO2 Akibat Gunung Meletus di Indonesia Berbasis Citra Satelit Sentinel-5P Menggunakan Platform Google Earth Engine (2019-2022). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Berdasarkan data MAGMA PVMBG, Badan Geologi Kementerian Energi dan Sumber Daya Mineral, pada tahun 2019 hingga 2022, sekitar 10 gunung api di Indonesia telah meletus dan beberapa telah meletus lebih dari dua kali. Di sisi lain, terdapat 10% keberadaan masyarakat Indonesia yang tinggal di sekitar daerah rawan bencana sehingga punya potensi besar terkena paparan polutan sulfur dioksida akibat abu vulkanik. Oleh karena itu, dilakukan analisis spatiotemporal terhadap konsentrasi SO2 akibat letusan gunung berapi di Indonesia periode 2019-2022 melalui data citra Sentinel-5P dengan bantuan aplikasi berbasis cloud, Google Earth Engine. Analisis dilakukan saat pra erupsi, erupsi, dan pasca erupsi untuk mengetahui bagaimana perbedaan dan persebaran konsentrasi SO2 di tiga periode tersebut. Data yang telah diolah dan informasi pendukung lainnya akan disajikan dalam bentuk visualisasi peta, diagram, tabel dan Google Earth Engine Apps. Metode penelitian dilakukan secara klasifikasi dan sampling dengan objek penelitian yang difokuskan pada 5 gunung yang tersebar di lingkup nasional yaitu Gunung Agung, Gunung Semeru, Gunung Ibu, Gunung Anak Krakatau dan Gunung Sinabung. Daerah cakupan yang digunakan sebagai ROI (Region of Interest) tiap gunung berbeda, sesuai dengan data kawasan rawan bencana yang didapat dari website InaRISK BNPB. Nilai dari konsentrasi SO2 di daerah letusan gunung api berkisar antara -0,0009-0,002 mol/m2 dengan kadar yang berbeda di tiap kawasan terdampak bencana. Uji korelasi terhadap hasil olah menunjukkan bahwa parameter iklim BMKG mempunyai pengaruh terhadap distribusi SO2 di lima gunung area studi sehingga konsentrasi belerang tidak selalu tinggi di dekat daerah sekitar letusan. Dari hasil analisis mingguan yang diperoleh, konsentrasi SO2 pada daerah erupsi meningkat selama erupsi dan cenderung lebih tinggi dibandingkan dengan konsentrasi selama pra dan pasca erupsi. Data yang telah divalidasi kemudian ditampilkan dengan sederhana dan antarmuka yang mudah dipahami oleh pengguna melalui Google Earth Engine Apps.
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Based on data from MAGMA PVMBG, the Geological Agency of the Ministry of Energy and Mineral Resources, in 2019 until 2022, about 10 volcanoes in Indonesia have erupted and some of them erupted more than twice. In addition, there are 10% of Indonesian people who live around disaster-prone areas, so they have great potential to be exposed to Sulfur Dioxide pollutants due to volcanic ash. Therefore, a spatiotemporal analysis was carried out on SO2 concentrations due to volcanic eruptions in Indonesia for the 2019-2022 period using Sentinel-5P imagery data with the help of a cloud-based application, Google Earth Engine. The analysis was carried out during pre-eruption, eruption, and post-eruption to find out the differences and distribution of concentrations. The processed data and other supporting information will be presented in the form of visualization maps, diagrams, tables, and Google Earth Engine Apps. The research method is carried out by classification and sampling with the object of research focused on 5 volcanoes spread across the national scope, namely Mount Agung, Mount Semeru, Mount Ibu, Mount Anak Krakatau and Mount Sinabung. The image used is Sentinel-5P with the advantage of temporal resolution, which can acquire daily data. The concentration values of SO2 in volcanic eruption areas ranged from -0.0009 to 0.002 mol/m2 with varying value in each affected area. Correlation tests for the processed results, showed that BMKG parameters (wind speed, temperature, humidity, and rainfall) have an effect on the distribution of SO2 in the five studied volcano areas. From the weekly analysis results obtained, SO2 concentrations in eruption areas increased during eruptions and tended to be higher compared to concentrations during pre- and post-disaster phases. The validated data was presented in a simple and user-friendly interface through Google Earth Engine Apps
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | letusan gunung berapi, konsentrasi SO2, Sentinel-5P, Google Earth Engine, uji korelasi, volcanic eruption, SO2 concentration, Sentinel-5P, Google Earth Engine, correlation test. |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing T Technology > TD Environmental technology. Sanitary engineering > TD883.5 Air--Pollution |
| Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Nur Aini Qolbi Fadhilah |
| Date Deposited: | 31 Jul 2023 07:26 |
| Last Modified: | 31 Jul 2023 07:26 |
| URI: | http://repository.its.ac.id/id/eprint/99706 |
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