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All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JOURNAL ONLINE OF PHYSICS Berkala Ilmiah Pendidikan Fisika Jurnal Fisika FLUX Jurnal Inovasi dan Pembelajaran Fisika Sriwijaya University Learning and Education International Conference JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) JIPF (Jurnal Ilmu Pendidikan Fisika) Seminar Nasional Pendidikan IPA Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Pendidikan Fisika Spektra: Jurnal Fisika dan Aplikasinya Formatif: Jurnal Ilmiah Pendidikan MIPA JMM (Jurnal Masyarakat Mandiri) Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Ilmu Fisika Indonesian Physical Review Jurnal Inovasi Pendidikan Jurnal Teori dan Aplikasi Fisika Kappa Journal Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Pendidikan Fisika dan Sains (JPFS) Wahana Dedikasi : Jurnal PkM Ilmu Kependidikan Magnetic: Research Journal of Physics and It’s Application JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Journal of Mathematics Science and Computer Education Progressive Physics Journal Jurnal Pendidikan dan Pengabdian Masyarakat Research in Education, Technology, and Multiculture Jurnal Pendidikan MIPA JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) BULETIN FISIKA
Melly Ariska
Physics Education, Faculty Of Teacher Training And Education, Sriwijaya University, Palembang-Prabumulih Street KM 32 Indralaya, Ogan Ilir, South Sumatra 32155, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Annual and Interannual Rainfall Variability in Indonesia Using Empirical Orthogonal Function (EOF) Analysis and Its Response to Ocean-Atmosphere Dynamics Ariska, Melly; Suhadi, Suhadi; Supari, Supari; Irfan, Muhammad; Iskandar, Iskhaq
Jurnal Ilmu Fisika Vol 16 No 2 (2024): September 2024
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.16.2.151-165.2024

Abstract

We investigate rainfall variability in Indonesia using the Empirical Orthogonal Function (EOF) method. The analysis starts by taking three main modes of EOF results, namely EOF1, EOF2, and EOF3. The EOF1 region is southern Indonesia, from southern Sumatra to Timor Island, parts of Kalimantan, parts of Sulawesi, and parts of Irian Jaya. The EOF2 region is located in northwestern Indonesia and includes the northern part of Sumatra and the northwestern part of Kalimantan. The EOF3 region covers Maluku. This study aims to analyze the annual and inter-annual variability of rainfall in anticipation of the threat of hydrometeorological disasters. Based on the correlation value of the principal component (PC) with the dipole mode index (DMI) and Niño3.4 index, it has a period similar to El Niño-Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD). Rainfall in Indonesia is very sensitive to sea surface temperature (SST) in the southeastern Indian Ocean and the central Pacific Ocean, which means that rainfall patterns in Indonesia can change significantly if SST in the region changes.
Analisis Karakteristik Curah Hujan di Pulau Kalimantan dan Hubungannya pada Fase El-Niño dan IOD Positif Putri Maulida, Nabila; Ariska, Melly; Suhadi, Suhadi; Akhsan, Hamdi
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.88-100.2025

Abstract

This study aims to analyze the characteristics of rainfall in Kalimantan Island during the ENSO and IOD phases using composite method. This study uses ERA5 reanalysis data for the period 1985-2023. The analysis was carried out using Python in Jupyter Notebook Software to visualize rainfall patterns across four seasons (DJF, MAM, JJA, and SON). The results indicate that El Niño events reduce rainfall during the JJA season, with the largest deficit occurring in the southern region of Kalimantan, where rainfall drops to less than 5 mm per season. Conversely, Positive IOD conditions exacerbate drought, resulting in decreased rainfall in the southern and central parts of the island. The combined effects of El Niño and Positive IOD cause an even more significant decline in rainfall, with the dry season experiencing a substantial reduction compared to normal conditions. This study provides important insights for hydrometeorological risk mitigation in Kalimantan, highlighting the need for adaptive management in response to climate variability.
ANALISIS CURAH HUJAN DI PAPUA BARAT MENGGUNAKAN METODE EMPIRICAL ORTHOGONAL FUNTION (EOF) Sayyendra, Amelia Putri; Andriani, Nely; Fitra Ritonga, Ahmad; Ariska, Melly
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 3 (2024): JOP (Journal Online of Physics) Vol 9 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i3.32249

Abstract

Penelitian ini berfokus pada analisis pola curah hujan di Papua Barat menggunakan metode Empirical Orthogonal Function (EOF). Data curah hujan harian diunduh dari situs web resmi Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) periode 1981-2015 dan dianalisis menggunakan platform Google Colab. Hasil penelitian menunjukkan bahwa Papua Barat memiliki pola curah hujan yang dominan dan variasi spasial yang signifikan dalam hal intensitas curah hujan bulanan. Pola ini menunjukkan bahwa wilayah selatan umumnya memiliki curah hujan yang lebih tinggi dibandingkan dengan wilayah utara. Data curah hujan menunjukkan bahwa terdapat tiga mode utama yang menjelaskan sebagian besar variabilitas data. Mode pertama (PC1) adalah yang paling dominan dengan , diikuti oleh mode (PC2) dan (PC3). Masing-masing mode memiliki pola spasial dan temporal yang khas dan memberikan kontribusi terhadap variabilitas data curah hujan di wilayah Papua Barat. Mode (PC1) adalah yang paling dominan komponen utama pertama adalah sebesar 75,26%, diikuti oleh (PC2) sebesar 9,46% dan (PC3) sebesar 5,61%.
DINAMIKA TEMPERATUR EKSTREM DI NUSA TENGGARA Agustina, Atika; Ariska, Melly; Akhsan, Hamdi
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 3 (2024): JOP (Journal Online of Physics) Vol 9 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i3.36490

Abstract

Penelitian ini bertujuan untuk mengetahui dinamika tren temperatur ekstrem di wilayah Nusa Tenggara dan dampaknya terhadap sektor pertanian, khususnya tanaman padi. Dengan adanya peningkatan frekuensi dan intensitas temperatur ekstrem yang mengancam produktivitas pertanian, hal ini menjadi suatu permasalahan yang harus diatasi. Metode penelitian yang digunakan adalah penelitian kuantitatif dengan menggunakan data sekunder. Data yang digunakan merupakan data harian temperatur maksimum dan minimum dari tiga stasiun meteorologi (Eltari, Sultan Muhammad Salahuddin, dan Umbu Mehang Kunda) selama 40 tahun (1983-2022). Analisis dilakukan menggunakan software RClimDex dan uji Mann-Kendall untuk mendeteksi tren dan perubahan temperatur ekstrem. Hasil penelitian menunjukkan adanya tren peningkatan temperatur ekstrem baik siang maupun malam hari di ketiga stasiun. Kenaikan temperatur ini merupakan indikasi perubahan iklim yang terjadi di wilayah tersebut. Peningkatan temperatur ini juga berdampak signifikan terhadap sektor pertanian, terutama dalam hal ketersediaan air dan produktivitas tanaman padi. Oleh karena itu, perlunya penerapan strategi adaptasi untuk mengurangi dampak negatif perubahan iklim terhadap pertanian di Nusa Tenggara, termasuk pengembangan varietas padi yang tahan panas dan manajemen irigasi yang lebih efisien.
ANALISIS DINAMIKA GASING BALIK TANPA GESEKAN DENGAN SYARAT AWAL BERVARIASI BERBASIS REDUKSI ROUTHIAN Ariska, Melly
Indonesian Physical Review Vol. 2 No. 2 (2019)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (666.886 KB) | DOI: 10.29303/ipr.v2i2.23

Abstract

Komputasi fisika dapat digunakan dalam membantu menyelesaikan persamaan dinamika benda yang kompleks, baik translasi maupun rotasi. Tujuan penelitian ini adalah mendapatkan perbedaan dinamika gasing balik dengan dan tanpa gesekan.  Persamaan gerak gasing balik di bidang datar dengan gesekan telah diturunkaan dengan metode reduksi Routhian dengan persamaan Poincare dengan bantuan komputasi pada penelitian sebelumya, dan telah pula dilakukan komputasi dalam pencarian solusi numerik dinamika gasing balik  dengan gesekan menggunakan program Maple. Dalam penelitian ini reduksi yang digunakan adalah reduksi Routhian, sehingga persamaan yang digunakan dalam menentukan persamaan gerak gasing balik adalah persamaan Poincaré yang didasari oleh reduksi Routhian dengan dan tanpa gesekan. Pengaruh gesekan dapat terlihat jelas melalui persamaan dinamika dan grafik pada gasing balik. Metode ini dapat menurunkan persamaan gerak gasing balik dengan dan tanpa gesekan yang bergerak di bidang datar dengan jelas berupa himpunan persamaan diferensial. Penelitian ini dapat dilanjutkan dengan menyelesaikan persamaan dinamika gasing balik di bidang melengkung seperti torus dan bola. Tujuan penelitian ini adalah menyelesaikan persamaan gerak gasing balik dengan dan tanpa gesekan memanfaatkkan komputasi fisika berbasis maple. Hasil temuan penelitian ini adalah persamaan dinamika dan grafik persamaan gasing balik dengan dan tanpa gesekan.
EMPIRICAL ORTHOGONAL FUNCTION (EOF) ANALYSIS BASED ON GOOGLE COLAB ON SEA SURFACE TEMPERATURE (SST) DATASET IN INDONESIAN WATERS Ariska, Melly; Suhadi, Suhadi; Herlambang, Dominikus Krisna
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.187

Abstract

Global Sea Surface Temperature (SST) data observed from yearly to yearly is limited in its use to determine spatial and temporal variations. The analysis was carried out on SST data in Indonesian waters for 252 months or for 21 years, starting from January 2000 to December 2020. The method used for analysis was Empirical Orthogonal Function (EOF) with the help of a statistical engine, Google Colab. The EOF method aims to reduce large data into several modes without eliminating the main information from the observed data. Analysis with this method resulted in the three largest principal components initialized with EOF1EOF2 and EOF3 modes. The EOF1 mode explains 56.8% of the total variation and is the dominant pattern representing almost all SST data in Indonesian waters. The EOF2 mode represents 24.5% of the total variation. The EOF3 modes each account for 13.4% of the total variation. Each EOF mode contains coefficients containing variables in the form of grid data and eigenvectors. Grid data describe geographic locations and eigenvectors describe spatial dimensions. The effectiveness of the three resulting EOF modes is kept close to the original data. Mapping of SST in the Indonesian Territory for 20 years has been carried out in this research, this study describes the seasonal visualization of SST data in Indonesian waters using Google Colab. This visualization shows the comparison of the distribution of sea surface temperature in the Indonesian waters throughout the year with seasonal patterns.
MORLET’S WAVELET ANALYSIS ON EL NIÑO SOUTHERN OSCILLATION (ENSO) AND THE INDIAN OCEAN DIPOLE (IOD) FOR 84 YEARS: 1940-2023 Suhadi, Suhadi; Putri, Jamiatul Khairunnisa; Iskandar, Iskhaq; Supari, Supari; Irfan, Muhammad; Ariska, Melly; Akhsan, Hamdi
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.363

Abstract

As is known, the impact caused by El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) can reach extreme levels, especially rainfall in Indonesia. So, updating information on events and cycles of these phenomena is essential. Using Sea Surface Temperature (SST) data spanning the previous 84 years (1940–2023) from ERA5, we examined Sea Surface Temperature Anomalies (SSTA), which serve as a predictive tool for ENSO and IOD events. Apart from that, in this research, SSTA variance analysis was also carried out using Wavelet. The analysis results show several Positive IOD-Like events (1943, 1944, 1977, 1996) and Negative IOD-Like (1985, 1992, 2016). Apart from that, the results of this research also show that El Niño in 2002/03 coincided with Negative IOD in 2002. The results of Wavelet analysis show that the SSTA DMI variance experienced increased activity in the periods 1940-1968, 1969-1991, and 1992-2023. The Wavelet analysis also shows that ENSO activity increased in 1970-2000 and decreased again in 2000-2023.
ANALYSIS OF RAINFALL PATTERNS IN THE NUSA TENGGARA REGION USING THE FAST FOURIER TRANSFORM (FFT) METHOD AND ITS RELATIONSHIP WITH EL-NIÑO AND IOD Agustina, Atika; Akhsan, Hamdi; Ariska, Melly; Suhadi, Suhadi; Andriani, Nely
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.397

Abstract

Changes in rainfall patterns have a significant impact on agriculture and water management in arid regions such as Nusa Tenggara. Water availability in this region is highly dependent on rainfall, which is influenced by global climate phenomena such as El-Niño and the Indian Ocean Dipole (IOD). This study aims to analyze the characteristics of rainfall patterns and analyze the relationship between rainfall and the El-Niño and IOD phenomena. Daily rainfall data from three BMKG observation stations in West Nusa Tenggara and East Nusa Tenggara during the period 1983-2022 were used in the analysis. The Fast Fourier Transform (FFT) method is used to identify periodic cycles, while the Pearson correlation test is used to determine the relationship of rainfall with El-Niño and IOD. The analysis shows that the Nusa Tenggara region is characterized by a monsoonal rainfall pattern with an annual cycle (12 months). Peak rainfall occurs in January and December, while the dry season lasts from July to September. The correlation of rainfall with El-Niño shows a weak negative relationship, while the influence of IOD is very small and varies between locations. The analysis shows that the rainfall pattern in the Nusa Tenggara region is monsoonal with an annual cycle (12 months) and semi-annual cycle (6 months). The peak of rainfall occurs from December to January, while the dry season lasts from July to September. The relationship between rainfall and El-Niño shows a weak negative correlation, so that when El-Niño increases, rainfall tends to decrease, and vice versa. The influence of IOD on rainfall is very small and varies between locations. Overall, while both El-Niño and IOD affect rainfall, their impact in the region is weak and more significant when both phenomena occur together.
Effectiveness of Dry Lab Based Augmented Reality to Overcome the Misconceptions of Students on Solar System and Eclipse Learning Topics Akhsan, Hamdi; Yusup, Muhammad; Ariska, Melly; Husna, Tsabita; Sari, Dwita Kartika
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6198

Abstract

In science learning there are many important concepts that must be understood. The solar system is a complex and abstract material because it cannot be seen directly by human senses resulting in students experiencing misconceptions.  Interactive learning media is needed to help students understand concepts. One of the learning media that can be applied is augmented reality based on dry lab simulation. This study aims to determine the effectiveness of using Dry Lab simulation to overcome misconceptions of earth and solar system material in junior high school. This research uses experimental research methods with Pre-experimental research models. The overall research results, the average effectiveness was 45.16%, which showed less effective results. Partially for the two sub-concepts of planets and solar and lunar eclipses, the average effectiveness is 65.5%, which shows that the dry lab simulation is effective in changing students' misconceptions
Enhancing Scientific Communication Skills of Pre-Service Science Teacher Through Guided Inquiry Learning on Basic Physics Laboratory Activities Pasaribu, Abidin; Patriot, Evelina Astra; Ritonga, Ahmad Fitra; Saparini, Saparini; Ariska, Melly; Berimah, Azizah Putri
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6560

Abstract

This study aims to describe the enhancement of students' science communication skills through the application of guided inquiry learning models in laboratory activities. The method used to describe science communication skills is to use pre-experiment research. The samples used in this study were 60 physics education students in the odd semester 2023/2024 who took basic physics practicum courses. The implementation of the guided inquiry learning model in the four meetings. The results of improving science communication skills were based on three indicators that researchers have limited. The result analysis used non-test instruments like observation sheets. The sub-scientific communication skills are: 1) searching information, 2) scientific writing, and 3) representing information. Based on the observation results, it was found that the application of the guided inquiry learning model can train students' science communication skills in sub-skills of seeking information with a percentage increase of 74%, sub-skills of scientific writing with a rise of 67% and sub-skills of representing information at an increase in percentage of 76%. Each average score on the third and fourth meetings shows that science communication skills are in the very skilled category
Co-Authors Abidin Pasaribu Abidin Pasaribu Abidin Pasaribu, Abidin Adam Darmawan Ade Kurniawan Ade Kurniawan Agustina, Atika Al Fatih, Zaky Alawiyah, Sakinah Amanda, Karenina Andriani, Nelly Apit Fathurohman Ari Widodo Arini Rosa Sinensis Atika Agustina Az Zahra, Lutfiah Azizah Putri Berimah Berimah, Azizah Putri Diah Kartika Sari Dina Maulina Dwi Purnomo Aji Dwicahyani, Rania Efrinalia, Winta Ernalida Ernalida Fena Siska Putriyani Firdausi, Huriyatul Fitra Ritonga, Ahmad Fitriyani Fitriyani Frida Ramadian Gelby Pradina Paramitha Hamdi Akhsan Hartono Hartono Hartono Hartono Hartono Hartono Hartono Hartono Herlambang, Dominikus Krisna Huriyatul Firdausi Husna, Tsabita Ida Sriyanti Ida Sriyanti Iful Amri Iin Seprina Iskhaq Iskandar Ismet Ismet Ismet, Ismet Jesi Pebralia Ketang Wiyono Ketang Wiyono Ketang Wiyono KHOIRUN NISA Kistiono Kistiono Kistiono Kistiono Kristylia Sury Laras Sapitri, Cindy Leni Marlina Manurung, Nia Three May Sari Melati, Pegi Meli Asma Desti Melvany, Nanda Eva Milka, Ikbal Adrian Mindia Vanessa Pratiwi, Sri Muhamad Yusup Muhammad afrizal Muhammad Aufa Riyaldo Muhammad Irfan Muhammad Irfan Muhammad Muslim muhammad muslim Muhammad Muslim Muhammad Muslim, Muhammad Muhammad Romadoni Muhammad Yusuf Muhammad Yusup Mulyadi Eko Purnomo, Mulyadi Eko Murnia Murniati Murniati . Muslimah, Resta Ulis Nely Andriani Nely Andriani, Nely Nilam Cahyati Novi Yusliani Nur Julia Ningsih Nurhikmah, Putri Nurjannah Nurjannah Nuzula, Khalidatun Patriot, Evelina Astra Pertiwi, Nadiar Pratiwi Ineke Anwar Putra, Guruh Sukarno Putri Maulida, Nabila Putri, Astrid Yulinda Putri, Jamiatul Khairunnisa Putriyani, Fena Siska Rahmannisa, Amanda Rahmi Susanti Rahmi Susanti Rahmi Susanti Rahmi, Ani Ramadhani, Neysya Ditha Rara, Rara Ratu Ilma Indra Putri Redondo, Fernando Eric Rini Khoirunnisa Rita Inderawati Ritonga, Ahmad Fitra Rizki Novianti, Rizki Romadoni, Muhammad Sakinah Alawiyah Salmah Rianti Saparini Saparini Sardianto Markos Siahaan Sardianto Markos Siahaan, Sardianto Markos Sari, Dwita Kartika Sary Silvhiany Sayyendra, Amelia Putri Seprina, Iin Setiyowati, Devi Ariska Siti Nur Azizah Sri Mindia Vanessa Pratiwi Sri Zakiyah Sudirman Sudirman Sudirman Sudirman Sudirman, Sudirman Suhadi Suhadi Suhanda, Alfin Sunyono - - Supari Supari Supari Supari, Supari Suryaningsih, Ruth Magdalena Syarifudin, Agus Syuhendri, Syuhendri Taufiq Taufiq Taufiq Taufiq Tine Aprianti Tita Ratna Wulan Dari Utami, Amanda Kurnia Viyanti Viyanti Wailaina Wati, Lira Diska Yenny Anwar Zahra Alwi, Zahra Zulherman Zulherman Zulherman Zulherman, Zulherman