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All Journal Indonesian Journal of Geography Komunikasi Fisika Indonesia Sinergi JOURNAL ONLINE OF PHYSICS Jurnal Sains & Teknologi Lingkungan Journal of Applied Geospatial Information JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY MAJALAH ILMIAH GLOBE Jurnal Geografi, Edukasi dan Lingkungan Media Mahardhika Jurnal Kreativitas PKM International Journal of Remote Sensing and Earth Sciences (IJReSES) Indonesian Physical Review DIFFRACTION: Journal for Physics Education and Applied Physics Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Jurnal Penelitian Fisika dan Terapannya (JUPITER) Journal of Computer Science and Engineering (JCSE) Jurnal Ilmiah Matematika Mitra Akademia: Jurnal Pengabdian Masyarakat Indexia Jurnal Energi Baru dan Terbarukan Jurnal Aplikasi Bisnis Kesatuan GEOGRAPHIA: Jurnal Pendidikan dan Penelitian Geografi Jurnal Riset Statistika Newton-Maxwell Journal of Physics Jagratara: Journal of Disaster Research The International Journal of Remote Sensing and Earth Sciences (IJReSES)
Yahya Darmawan
Indonesian Agency For Meteorological, Climatological And Geophys-ics (BMKG) Region I
Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Edukasi Partisipatif Peringatan Dini dan Mitigasi Bencana Hidrometeorologi di Kecamatan Pesanggrahan Darmawan, Yahya; Karyono, Karyono; Wandono, Wandono; Benyamin Heryanto Rusanto; Agung Perdian Sulistio
Mitra Akademia: Jurnal Pengabdian Masyarakat Vol 8 No 3 (2025): Mitra Akademia: Jurnal Pengabdian Masyarakat
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia, as an archipelagic country with a high risk of geo-hydrometeorological disasters, requires early education to build awareness and preparedness. This study aims to improve students’ understanding of early warning systems and disaster mitigation through participatory learning. The Community Service Program (PKM) was carried out at SMA Triguna 1956, Pesanggrahan District, South Jakarta, on July 24, 2025. The stages included site survey, material preparation, socialization through Focus Group Discussion (FGD), disaster response simulation, and evaluation using pre-test and post-test combined with digital media. A quasi-experimental method with a pre-test and post-test design was applied. The results showed a significant increase in students’ understanding of early warning procedures and mitigation measures. Thus, participatory education proved effective in strengthening youth preparedness against geo-hydro meteorological disasters.
COMPARISON OF THE VEGETATION INDICES TO DETECT THE TROPICAL RAIN FOREST CHANGES USING BREAKS FOR ADDITIVE SEASONAL AND TREND (BFAST) MODEL Yahya Darmawan; Parwati Sofan
International Journal of Remote Sensing and Earth Sciences Vol. 9 No. 1 (2012)
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2012.v9.a1823

Abstract

Remotely sensed vegetation indices (VI) such as the Normalized Difference Vegetation Index (NDVI) are increasingly used as a proxy indicator of the state and condition of the land cover/vegetation, including forest. However, the Enhanced Vegetation Index (EVI) on the outcome of forest change detection has not been widely investigated. We compared the influence of using EVI and NDVI on the number and time of detected changes by applying Breaks for Additive Seasonal and Trend (BFAST), a change detection algorithm. We used MODIS 16-day NDVI and EVI composite images (April 2000-April 2012) of three pixels (pixels 352, 378, and 380) in the tropical peat swamp forest area around the flux tower of Palangka Raya, Central Kalimantan. The results of BFAST method were compared to the Normalized Difference Fraction Index (NDFI) maps and the maps were validated by the hotspot of the Infrastructure and Operational MODIS-Based Near Real-Time Fire(INDOFIRE). Overall, the number and time of changes detected in the three pixels differed with both time series data because of the data quality due to the cloud cover. Nonetheless, we found that EVI is more sensitive than NDVI for detecting abrupt changes such as the forest fires of August 2009-October 2009 that occurred in our study area and it was verified by the NDFI and the hotspot data. Our results demonstrated that the EVI for forest monitoring in the tropical peat swamp forest area which is covered by intense cloud cover is better than that NDVI. Nonetheless, further research with improving spatial resolution of satellite images for application of NDFI is highly recommended.
Respon Meteorologi dan Oseanografi Perairan Indo-Pasifik terhadap Kejadian Multi Siklon Tropis pada November–Desember 2021 Sabrina, Purwanti Lelly; Ramadani, Rizki; Darmawan, Yahya
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 7, No 2 (2025)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v7i2.17887

Abstract

Indonesia tidak mengalami kondisi siklon tropis secara langsung, namun sering terdampak oleh siklon tropis yang terjadi di Samudera Hindia dan Samudera Pasifik. Hal ini mempengaruhi kondisi atmosfer dan oseanografi seperti angin, curah hujan, gelombang, dan suhu permukaan laut. Penelitian ini bertujuan untuk menganalisis karakteristik kondisi meteorologi dan oseanografi pada fase bibit dan siklon tropis yang terjadi pada periode November – Desember 2021 serta kaitannya dengan variabilitas iklim regional dan global. Terdapat 4 kejadian yaitu siklon tropis Paddy, Nyatoh, bibit siklon 94 W dan 95 S. Hasil menunjukkan bahwa kecepatan angin selama kejadian siklon tropis berkisar antara 15 – 29 m/s dengan tinggi gelombang 2,5 – 5 m. Siklon tropis mempengaruhi peningkatan curah hujan beberapa waktu setelah kejadian, dengan curah hujan maksimum mencapai 106 mm/hari pada Siklon Tropis Nyatoh. Indeks ENSO 3.4 menunjukkan kondisi La Niña kuat pada periode penelitian, sementara indeks IOD berada pada fase netral. Suhu permukaan laut di Samudera Pasifik dan perairan Indonesia berkisar 24 – 32 °C, sedangkan di Samudera Hindia 24 – 30 °C. Hasil penelitian ini diharapkan dapat menjadi dasar dalam peningkatan pemahaman dampak siklon tropis terhadap laut – atmosfer Indonesia, serta mendukung upaya mitigasi dan peringatan dini bencana hidrometeorologi.
Identifikasi Tingkat Kerawanan Kebakaran Hutan Lahan Berbasis Model Spasial Multi-Kriteria dengan Teknik Skoring–Overlay di Provinsi Sumatera Selatan: Indonesia Saputri, Chendrika; Rumaday, Nada Naurah; Darmawan, Yahya; Rahma, Nuzula Elfa; Franchitika, Rizky
Jurnal Sains & Teknologi Lingkungan Vol. 18 No. 2 (2026): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol18.iss2.art5

Abstract

Forest fires are a major environmental problem in the province of South Sumatra, Indonesia, affecting ecosystems, public health, and the economy. Through scoring and overlay methods, this study was conducted to analyze the potential of forest fires in South Sumatra. This scoring method evaluates forest fire risk factors such as rainfall, soil type, land cover. Data from various sources were collected and processed, including satellite imagery, weather data, and historical fire reports using hotspot data detected by satellite imagery, showing a correlation between the vulnerability of Province South Sumatera to forest and land fires. The results of the assessment analysis were integrated into a geographic information system (GIS) using overlay technology to create a map of forest fire potential. This map identifies areas with high, medium and low fire risk. Based on the research, the likelihood of forest fires is high in some areas of South Sumatra, especially during the dry season. Data analysis showed significant variability in the number of fires from year to year, with 2014, 2019, and 2023 being the highest peak. The objective of this research is to develop a fire susceptibility map based on physical and climatological parameters and to validate the model's accuracy against historical hotspot distributions. This susceptibility map is intended to serve as a spatial instrument for government authorities and stakeholders in designing more precise fire prevention and mitigation strategies based on the intrinsic characteristics of the South Sumatra region.
KARAKTERISTIK TURBULENSI ATMOSFER DI WILAYAH BANDARA MINANGKABAU BERDASARKAN DATA RADIOSONDE Elindra, Hani; Fadlan, Ahmad; Mulsandi, Adi; Darmawan, Yahya
JOURNAL ONLINE OF PHYSICS Vol. 11 No. 3 (2026): JOP (Journal Online of Physics) Vol 11 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/ws46kh95

Abstract

Turbulensi atmosfer merupakan fenomena dinamika atmosfer berskala kecil yang berperan dalam pertukaran momentum dan panas, sekaligus berdampak bagi keselamatan penerbangan, terutama di wilayah tropis dengan topografi kompleks seperti pesisir barat Sumatera. Penelitian ini bertujuan untuk mengetahui profil angin vertikal dan karakteristik turbulensi atmosfer di wilayah Bandara Internasional Minangkabau menggunakan data radiosonde periode Desember 2022–November 2023 pada pukul 00 UTC dan 12 UTC. Karakteristik turbulensi dianalisis melalui frekuensi Brunt–Väisälä (N²), Bilangan Richardson (Ri), dan laju disipasi energi (ε) yang diturunkan dari Metode Analisis Thorpe, dilengkapi kontribusi geseran angin vertikal melalui closure Rmin, serta penyaringan Trend-to-Noise Ratio (TNR) untuk mengurangi deteksi overturning palsu akibat noise instrumen. Profil vertikal dibagi menjadi tiga lapisan: Lower Troposphere Layer (0–3 km), Middle Troposphere Layer (3–10 km), dan Upper Troposphere and Lower Stratosphere Layer (10–18 km). Pada periode penelitian, hasil menunjukkan bahwa kecepatan angin dan vertical wind shear meningkat tajam pada UTLS, dengan puncak kecepatan angin musim Desember-Januari-Februari (DJF) mencapai sekitar 29 m/s pada ketinggian 15–16 km. Lapisan UTLS teridentifikasi sebagai zona dengan kondisi instabilitas dinamis (Ri < 0,25) paling sering terjadi, yang mengindikasikan potensi shear-driven turbulence dengan frekuensi kejadian mencapai sekitar 40–48% terutama pada musim DJF, konsisten dengan nilai turbulensi aktual oleh εtotal serta kategori intensitas Severe yang juga memuncak pada lapisan yang sama. Mekanisme shear-driven teridentifikasi lebih dominan dibandingkan convective/overturning pada hampir seluruh lapisan dan musim, dengan kategori intensitas Severe mencapai sekitar 55–56% pada UTLS musim DJF.
Co-Authors Adi Mulsandi Agung Perdian Sulistio Akbar, Ahmad Aldizar Al Badri, Abdul Aziz Amanu, Rendy Syahril Amri, Sayful Anggraini, Eca Indah Ardhana, Andini Aprilia Arief Wibowo Arief, Syachrul Arifianto, Fendy Arkananta, Muhammad Zaky Armadyaputri, Aludra Nadia Bambang Giyanto Benyamin Heryanto Rusanto Carundyatama, Daniar Ihza Dahsan, Sudarti Deni Septiadi Dhaifullah Rafif Aslam Elindra, Hani Erna Frida Fadhli Aslama Afghani Fadlan, Ahmad Fadllillah, Ahmad Arif Zulfan Ferdiansyah, Ervan Ferdiyansyah, Ervan Franchitika, Rizky Giananti, Attiya Shakila Habibi, Naufal Ilham Hayatul Khairul Rahmat Hibatullah, Khindi Aufa Ikhsanudin, Agus Haryanto Imawan Mashuri Karyono Karyono Kusumayanti, Diah Lumbantoruan, Alva Josia Manik, Willy Bonanja Manurung, Ellya Veronika Iriani Manurung, Royston Marhaposan Situmorang, Marhaposan Muhamad Arif Jumansa Muhammad Labieb Muzakkie Muhammad Zaky Arkananta Mulya, Aditya Nisa, Ania Maulidiah Nurdin, Fachdy Oktabrian, Krisna Dwi Parwati Sofan Rahma, Nuzula Elfa Ramadoni Khirtin Restianto, Mohammad Obie Rista Hernandi Virgianto Rizki Ramadani Rumaday, Nada Naurah Sabrina, Purwanti Lelly Samen Baan Sanjaya, Kadek Valerina Kitana Saputra, Ahmad Irsyad Saputri, Chendrika Saragih, Immanuel Jhonson A. Siane, Bless Aplena Elen Sudarisman, Maman Supriyadi, Asep Adang Syahrul Humaidi, Syahrul Tambunan, Nensy Nindy Tanggahma, Yuan Zalfa Trianasari, Maria Evy Tulus Ikhsan Nasution Veanti, Desak Putu Okta Vidia, Trimawarti Esti Wandono, Wandono Weman Suardy Wibowo, Shindyko Widodo , Anton Widodo Widodo