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All Journal Teknosains: Media Informasi Sains dan Teknologi Jurnal Fisika Unand JITEK (Jurnal Ilmiah Teknosains) JPSE (Journal of Physical Science and Engineering) Jurnal Geocelebes Jurnal Penelitian Pendidikan IPA (JPPIPA) Neutrino Indonesian Physical Review Jurnal Fisika dan Terapannya Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Wahana Pendidikan KUANTUM: Jurnal Pembelajaran dan Sains Fisika Patria Artha Journal of Community Journal Of Khairun Community Services Journal of Science and Science Education (JoSSEd) Jurnal Edu Research Jurnal Pijar MIPA Newton-Maxwell Journal of Physics Geosains Kutai Basin KUANTUM Faraday: Journal of Fundamental Physics, Research, and Applied Science Jurnal Pengabdian Indonesia BULETIN FISIKA Jurnal Pengabdian Masyarakat Indonesia
Meidji, Icha Untari
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Analysis of the Hydrodynamic Characteristics of Limboto Lake Waters Based on Momentum Fluxes Mikail Gabriel Khan Khan; Raghel Yunginger Yunginger; Dewa Gede Eka Setiawan; Mohamad Jahja; Icha Untari Meidji; Haerul Ahmadi; Cucu Kusmayancu; Merpati Teodoris Nalle
BULETIN FISIKA Vol. 27 No. 1 (2026): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2026.v27.i01.p02

Abstract

The waters of Lake Limboto show a decline in water quality, characterized by a decrease in clarity. Environmental factors, such as wind speed and direction, play a significant role in influencing the dynamics and quality of lake waters. To understand the influence of wind on water conditions, a comprehensive hydrodynamic study is required. This study focuses on analyzing the hydrodynamic characteristics of Lake Limboto waters based on momentum flux and its implications for lake water conditions. Wind speed and direction measurements were conducted on seven ducks in Lake Limboto waters during the period of November 1-3, 2024. Data were collected in the morning, afternoon, and evening. The lake's hydrodynamic characteristics were determined using formulas from the measured data. Hydrodynamic characteristics were interpolated using IDW cross validation leave one out and optimized with rank and neighboring point parameters. Wind direction was interpolated using IDW and converted into a vector field using Vector Field Layer Manager. It was found that the momentum flux by wind in Lake Limboto waters has a value range of 0-0.05 N/m2, and cross validation produced an RMSE of 0.003-0.01 N/m2. The interaction of momentum flux from wind and river flow causes sediment to be deposited in the coastal area of ​​Lake Limboto.
Studi Geolistrik untuk Menentukan Ketebalan dan Komposisi Sedimen di Danau Limboto, Gorontalo Mamonto, Yusril Mahendra; Yunginger, Raghel; Mursalin, Mursalin; Zainuri, Ahmad; Meidji, Icha Untari; Setiawan, Dewa Gede Eka
(JITEK)Jurnal Ilmiah Teknosains Vol 11, No 2/Nov (2025): Jitek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jitek.v11i2/Nov.23754

Abstract

This study aims to identify the type and thickness of sediment in Lake Limboto using the Schlumberger configuration geoelectric method. This method was chosen because of its ability to detect resistivity variations that reflect the characteristics of subsurface sediments. The research procedure begins with an initial survey to determine strategic measurement locations, followed by electrode arrangement and resistivity measurements. Data obtained from the measurements were analyzed using geophysical analysis software to produce a resistivity distribution model. The results showed that there were variations in sediment types, including sand, clay, and alluvial soil, as well as varying sediment thicknesses in various locations. These findings are expected to provide useful information for water resource management and mitigation of shallowing problems in Lake Limboto.
PENDAMPINGAN INTENSIF OLIMPIADE SAINS NASIONAL BIDANG FISIKA BAGI SISWA SMA NEGERI 3 GORONTALO Lukman Samatowa; Icha Untari Meidji; Harsano Jayadi
Jurnal Pengabdian Indonesia (JPI) Vol. 2 No. 2 (2026): Vol. 2 No. 2 Edisi Juli 2026
Publisher : PT. Jurnal Center Indonesia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62567/jpi.v2i2.2986

Abstract

Olimpiade Sains Nasional (OSN) bidang Fisika merupakan salah satu program resmi nasional yang menuntut penguasaan konsep, penalaran matematis, dan kemampuan pemecahan masalah yang sistematis. Kegiatan pengabdian ini dilakukan oleh dosen Fisika Fakultas Mipa Universitas Negeri Gorontalo melalui pendampingan dengan tujuan memperkuat kesiapan siswa peserta OSN Fisika SMA Negeri 3 Gorontalo ke tingkat Provinsi hingga Nasional. Kegiatan dilakukan sejak awal tahun yaitu Januari 2026 hingga ujian tingkat provinsi di Bulan Juli 2026 selama dua kali dalam seminggu menggunakan pendekatan partisipatif dan beriorientasi latihan soal. Kegiatan diawali dengan mengidentifikasi kebutuhan, pemetaan kemampuan awal siswa, penguatan konsep, pembahasan soal nonrutin, latihan mandiri, diskusi, simulasi soal, serta refleksi umpan balik. Evaluasi dilakukan secara deskriptif melalui observasi mentor, lembar kerja siswa, latihan formatif, kinerja pada simulasi, dan umpan balik lisan maupun tertulis. Hasil pendampingan menunjukkan perkembangan positif pada kemampuan siswa dalam mengenali prinsip fisika yang relevan, mengubah persoalan menjadi diagram dan persamaan, menyusun langkah penyelesaian, memeriksa satuan dan kewajaran jawaban, serta mengomunikasikan alasan penyelesaian. Siswa juga tampak lebih aktif dan percaya diri dalam diskusi. Kendala yang masih memerlukan penguatan adalah soal multikonsep, aljabar atau kalkulus tingkat lanjut, dan manajemen waktu. Peserta menilai penjelasan bertahap dan koreksi langsung sebagai bagian paling membantu, serta mengusulkan penambahan simulasi dan bank soal lanjutan. Kolaborasi perguruan tinggi dan sekolah secara berkelanjutan diperlukan untuk membangun ekosistem pembinaan OSN Fisika yang terstruktur.
Co-Authors Abdul Mukaddas Abdul Mukaddas Abdullah Ahmad Zainuri Ahmadi, Haerul Akuba, Kisman R Andi Indra Wulan Sari Ramadani Aris, Ayub Pratama Asri Arbie Ayusari Wahyuni Ayusari Wahyuni Basyri Yadi Tang Bergita Gela M Saka Botjing, Muslimin U Cucu Kusmayancu Dewa Gede Eka Setiawan Dwa Desa Warnana Firman Firman Fiska Tobamba Gafur, Nurfitri Abdul Harsano Jayadi Harsano Jayadi Harsano Jayadi Hasan Arif Efendi Huzaima Mas’ud I Made Hermanto Idris, Rani Ika Daruwati, Ika Imran, Syahdan Ali Indriati Martha Patuti Irianto Uno Irna Hidayat Irsan Irsan Rahman Irsan Rahman, Irsan Jahja, Mohamad Jahja, Mohamada Jajat Jatnika Kartika Kurniasari, Septiana Lapananda, Nuraliva F.P Latief, Muh Fachrul Lukman Samatowa Mamonto, Yusril Mahendra Masruroh Masruroh Meilan Demulawa Merpati Teodoris Nalle Mikail Gabriel Khan Khan Moch Rio Pambudi Moh Dahlan Th Musa Mohamad Ramdhan Mohamad, Wahyu Mu’zizat Muh. Abduh Muhammad Fawzy Ismullah Massinai Muhammad Yunus Mursalin . Ninasafitri, Ninasafitri Paputungan, Devi Triana Rachman, Gazali Raghel Yunginger Yunginger Rifai, Rusni R Sismanto Sismanto Supu, Idawati Tang, Basyri Yadi Tang, Bunga Widi Atmoko Widi Atmoko Widi Atmoko Windi Lestari Yudoyono, Susilo Yusniati H. Muh. Yusuf Yutdam Mudin