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All Journal TEKNIK Jurnal GEOSAPTA
Arbad, Arliandy Pratama
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Earth & Planetary Sciences Energy Engineering Environmental Science

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Estimasi Deformasi Permukaan Gunung Bromo menggunakan Analisis Time-Series InSAR Small Baseline Subset Arbad, Arliandy Pratama; Takeuchi, Wataru; Aoki, Yosuke; Ardy, Achmad; Jamilah, Mutiara
TEKNIK Vol 39, No. 2 (2018): Desember 2018
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.108 KB) | DOI: 10.14710/teknik.v39i2.20052

Abstract

We observe the surface deformation of the Mt. Bromo which located at eastern Java Indonesia area that includes neighborhood volcanic system on TNBTS (Taman Nasional Bukit Tengger Semeru). Recently, remote sensing has played as an important role to observe volcano behaviour. We apply the SAR Interferometry (InSAR) algorithm referred to as Small Baseline Subset (SBAS) approach that allows us to generate mean deformation velocity maps and displacement time series for the studied area. The common SBAS technique, the set of interferometric phase observations writes as a linear combination of individual SAR scene phase values for each pixel independently. Particularly, the proposed analysis is based on 22 SAR data acquired by the ALOS/PALSAR sensors during the 2007–2011 time interval. A fewer studies have been able to show capability of InSAR analysis for investigating cycle of volcano especially of Mt. Bromo which characterized eruption stratovolcano in ranging one to five years. The results expected in this work represent an advancement of previous InSAR studies of the area that are mostly focused on the deformation affecting the caldera. According to the result, we expected this study could implement on risk management or infrastructure management.
ANALISIS PROBABILISTIC MODEL MITIGASI TSUNAMI AKIBAT AKTIVITAS VULKANIK GUNUNG ANAK KRAKATAU DENGAN MENGGUNAKAN DATA PENGINDERAAN JAUH Arbad, Arliandy Pratama; Hasan, Muhammad Fathur Rouf
Geosapta Vol 8, No 1 (2022): Januari 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v8i1.12074

Abstract

Terdapat vector deformasi dari patahan cabang disekitar Sumatran Fault Zone (Sumatera Bagian Selatan-Lampung) sehingga mengakibatkan adanya sesar baru yang terbentuk setelah terjadinya aktifitas vulkanik Gunung Anak Krakatau sejak akhir 2018. Tujuan penelitian ini yaitu melakukan pengamatan aktifitas GAK guna memberikan informasi yang dapat menyatakan bahwa patahan yang terjadi kemungkinan besar disebabkan karena aktifitas vulkanik GAK. Metode yang digunakan yaitu penginderaan jauh dengan memanfaatkan data SAR yang berasal dari sensor PALSAR-2 dan Gambar yang memiliki karakteristik frekuensi L-band di papan dari Advanced Land Observing Satellite (ALOS) dengan sensor gelombang mikro aktif. Hasil yang diperoleh menunjukkan bahwa dengan menggunakan database high-density dari genangan dan informasi run-up, perilaku tsunami lokal dapat dinilai dan dianalisis di daerah tergenang. Adapun data pengukuran ketinggian genangan dan ketinggian run-up akan berguna untuk menyelidiki efektivitas perlindungan tsunami selama kesiapsiagaan risiko bencana. Untuk penelitian lebih lanjut, informasi dinamis tentang tsunami seperti kecepatan atau waktu proses penggenangan diperlukan untuk memahami peristiwa ini.
Co-Authors Aoki, Yosuke Ardy, Achmad Jamilah, Mutiara Muhammad Fathur Rouf Hasan Wataru Takeuchi, Wataru