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All Journal GRADIEN JURNAL ENGGANO Jurnal Sumberdaya Akuatik Indopasifik AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Akuatiklestari Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Pendidikan Fisika dan Teknologi Indonesian Physical Review Academia Open Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Indonesian Journal of Community Empowerment and Service Dikdimas : Jurnal Pengabdian Kepada Masyarakat
Irkhos Irkhos
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Other

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Perubahan Muka Air Laut dan Klorofil-A di Perairan Bengkulu Akibat Kejadian Enso Irkohs, Irkhos; Ulandari, Tresi Pitria; Irkhos, Irkhos; Lizalidiawati, Lizalidiawati
Akuatiklestari Vol 8 No 2 (2025): Jurnal Akuatiklestari
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/akuatiklestari.v8i2.7158

Abstract

Perairan Bengkulu merupakan salah satu perairan yang dipengaruhi oleh fenomena El-Niño Southern Oscillation (ENSO) sehingga memengaruhi perubahan muka air laut di wilayah Bengkulu. Penelitian ini bertujuan unutk menganalisis hubungan antara kejadian El-Niño dan La-Niña Terhadap perubahan muka air laut serta distribusi klorofil-a si Perairan Bengkulu. Data yang dianalisis mencakup SLA, klorofil-a, serta indeks Nino 3.4 dalam rentang waktu 20 tahun (2002–2022), yang diperoleh dari satelit altimetri multi-misi dan NOAA. Proses analisis dilakukan menggunakan perangkat lunak Panoply, SeaDAS, dan Excel, serta uji korelasi dan regresi linear dengan Matlab R2024b. Hasil Penelitian menunjukkan adanya korelasi linear negatif antara Indeks ENSO dan SLA (r = -0,12), serta korelasi linear positif antara Indeks ENSO dan klorofil-a (r = 0,13). Saat terjadi El-Niño, SLA mengalami penurunan (-0,1 hingga 0,1 m), sementara konsentrasi klorofil-a meningkat (-0,3hingga 0,4 mg/m³) akibat proses upwelling mengalami penguatan yang membawa nutrisi dari perairan dalam ke permukaan. Sebaliknya saat La Niña terjadi, SLA cenderung meningkat sebesar 0,1 hingga 0,12 m, sedangkan klorofil-a mengalami penurunan sebesar 0,2 hingga 0,5 mg/m³ akibat adanya proses downwelling. Namun, selama periode La-Niña 2007–2009, ditemukan anomali dimana SLA mengalami penurunan, sementara klorofil-a meningkat. Hal ini diduga disebabkan oleh upwelling lokal yang dipengaruhi oleh fenomena Indian Ocean Dipole (IOD positif). Penelitian ini menunjukkan bahwa ENSO memiliki dampak signifikan terhadap dinamika oseanografi di perairan Bengkulu. Penelitian ini dapat dijadikan informasi awal khususnya bagi nelayan dan masyarakat sekitar pesisir dalam adaptasi dampak perubahan lingkungan laut akibat kejadian ENSO.
Sea Level Anomaly Variability Due to Global Climate in the Western Waters of Sumatra Banjarnahor, Samuel Kristian Alfredo; Silaban, Angeli; Verojenases, Fascal; Irkhos, Irkhos; Lizalidiawati, Lizalidiawati
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 2 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i2.534

Abstract

The western waters of Sumatra are part of the Indonesian waters that directly interact with the Indian Ocean, which is a climatologically complex area due to influenced by various atmospheric and marine phenomena that are seasonal and inter annual. Therefore, the purpose of this study is to analyze the influence of the El Niño Southern Oscillation (ENSO) phenomenon on changes in sea level in Western Sumatra waters during the period of 1997-2023. The data used include sea level anomaly (SLA), Oceanic Niño Index (ONI), and Dipole Mode Index (DMI). The results show that strong El Niño, such as in 1997/1998, cause sea level to drop to - 0.3 meters due to intense upwelling. In contrast, El Niño 2015/2016 increased sea level by + 0.2 meters due to the dominance of down welling. During the La Niña period, sea level rose significantly, reaching 0.3 meters in 2022/23. The long-term trend shows an average sea level rise of 0.056-0.064 meters over the last 26 years, with different variations between regions.
Mekanisasi Pengolahan dan Manajemen Pemasaran Secara Online Terasi Udang Rebon Irkhos, Irkhos; Coryanata, Isma; Jarmuji, Jarmuji; Sugianto, Nanang
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 6 No 4 (2022): November
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v6i4.5242

Abstract

Kegiatan pengabdian kepada masyarakat telah dilaksanakan di RT. 09 kelurahan Malabero Kota Bengkulu. Mitra sasaran kegiatan pengabdian ialah perwakilan nelayan tradisional yang berada di RT. 09 Kelurahan Malabero Kota Bengkulu. Mitra kegiatan berjumlah 5 (lima) orang yang terdiri dari nelayan pembuat terasi dan ibu-ibu yang menjual terasi udang rebon. Kegiatan ini difokuskan pada peningkatan produksi dan manajemen pemasaran terasi udang rebon. Adapun tujuan kegiatan ini adalah untuk meningkatkan kapasitas produksi terasi udang rebon serta memperluas target pemasaran produk. Metode pelaksanaan kegiatan terdiri dari; pelatihan penggunaan serta pengadaan mesin penggilingan bahan baku terasi udang rebon untuk meningkatkan produksi dan pelatihan pemasaran produk secara online melalui media penjualan online untuk memperluas target pemasaran produk. Hasil yang diperoleh melalui kegiatan ini adalah peningkatan kapasitas produksi bahan baku terasi dari 30 kg/hari secara manual menjadi 60 kg/hari menggunakan mesin penggilingan. Hasil lainnya adalah bertambahnya target pemasaran yang sebelumnya dipasarkan langsung di pinggir jalan, saat ini sudah dipasarkan secara online di e-commerce.
The Influence of Monsoon Winds on Humidity, Cloud Cover, and Rainfall in Bengkulu City Warahma, Ella; Lizalidiawati, Lizalidiawati; Irkhos, Irkhos; Herawati, Tuti
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 11 No 1a (2025): Special Issue
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v11i1a.8811

Abstract

The city of Bengkulu, which borders the Indian Ocean, has unique weather and climate. The ENSO phenomenon in 2023 will also strengthen the impact of monsoon winds on weather parameters in Bengkulu City. This research aims to analyze the influence of monsoon winds on air humidity, cloud cover and rainfall in Bengkulu City during 2022-2024. Data including wind speed and direction, humidity, cloud cover, and rainfall, were analyzed using WRPLOT View, ArcGIS, Panoply, and Excel software. The method used is descriptive, quantitative and statistical analysis. The results show that during the Northwest Monsoon (January 2022–2024), the dominant winds are from the northwest and northeast with cloud cover (80%) and the highest rainfall is 449 mm/month and the lowest is 208 mm/month. In Transition Monsoon I (April 2022–2024), the wind direction is from the northwest, the highest humidity is 94%, cloud cover (75%) and rainfall is medium to high. In the Southeast Season (August 2022), the wind direction varies greatly with the highest (95%) and lowest (77%) air humidity and the highest rainfall of 558 mm/month. Meanwhile, August and October 2023 will see a decrease in rainfall, where the rainfall will be 10 – 84 mm/month due to the El Niño phenomenon. Transition Season II (October 2022 and 2024) the wind direction varies greatly, namely from the southeast, northwest and north, rainfall varies from low to high. The highest correlation coefficient for rainfall with humidity was 0.45 at the Bengkulu Climatology Station and the lowest was 0.22 at the Bengkulu University Station. The highest correlation with cloud cover was 0.67 at Tanjung Agung Station and the lowest was 0.53 at Bengkulu Climatology Station. This study reveals that the northwest monsoon contributes to high humidity and rainfall, and El Niño will reduce rainfall significantly in 2023. These results indicate that monitoring seasonal winds is very important for predicting hydrometeorological disasters in Bengkulu City.
PHYSICOCHEMICAL PROPERTIES ANALYSIS OF LOCAL CERAMICS WITH ACTIVATED CARBON ADDITIVE BASED ON RUBBER FRUIT SHELLS AS THERMAL INSULATORS Kurniawan, Chandra; Yuliza, Elfi; Irkhos, Irkhos; Fitriani, Dyah
Indonesian Physical Review Vol. 6 No. 3 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i3.232

Abstract

Many building materials that function as insulators to maintain indoor temperature stability during hot weather have been developed. One of them is porous ceramics applied to building walls as heat absorbers. Research related to the manufacture of porous ceramics began to emerge to find the optimal composition when applied as an insulator that can absorb heat well. In general, porous ceramics use activated carbon as a pore agent. Activated carbon can be obtained by carbonating agricultural wastes such as coconut shells, hazelnut shells, rubber fruit shells, rice husks, and cocoa shells. Research continues to develop in finding the best-activated carbon base material according to the required material characteristics. Researchers will take advantage of the abundant potential of local natural resources. The method used to make porous ceramics is to mix clay and activated carbon with a clay-carbon composition ratio of 100:0, 90:10, 80:20, 70:30, 60:40, and 50:50. The sample is made by mixing the two materials and then printed by dry pressing method with a load of 5 tons held for 10 minutes. After the sample is dried at room temperature, it is sintered at 900oC with a holding time of 3 hours. Next, the sample is characterized by determining density, porosity, and water absorption and then tested for thermal properties. After that, the surface morphology and elements in the sample are seen. The optimum composition of clay-carbon mixture is 70:30 grams.  Ceramics using activated carbon from rubber fruit shells are suitable as building construction materials as heat insulators because they can absorb heat up to 500oC.
Pelatihan Pengelolaan Website dan Konten Youtube Untuk Promosi Wisata Desa Rindu Hati Bengkulu Tengah Irkhos, Irkhos; Risdianto, Eko
DIKDIMAS : Jurnal Pengabdian Kepada Masyarakat Vol. 1 No. 1 (2022): DIKDIMAS : JURNAL PENGABDIAN KEPADA MASYARAKAT  VOL 1 NO 1 APRIL 2022
Publisher : Asosiasi Profesi Multimedia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58723/dikdimas.v1i1.13

Abstract

Kemajuan sektor pariwisata di Desa Rindu Hati Bengkulu Tengah belum optimal. Salah satu faktor permasalahan adalah kurangnya promosi untuk memperkenalkan potensi wisata yang dimiliki. Pengelola objek wisata Desa Rindu Hati tidak memiliki keterampilan yang memadai tentang penggunaan media promosi secara online seperti website dan youtube. Media online merupakan sarana promosi yang handal untuk menjangkau calon wisatawan secara global. Kegiatan Pengabdian Kepada Masyarakat ini bertujuan untuk mengenalterapkan website dan youtube sebagai media promosi kepada kelompok pengelola wisata di Desa Rindu Hati. Metode yang digunakan yaitu pelatihan dan pendampingan dalam mendesain dan mengelola website dan konten youtube untuk mempromosikan potensi wisata. Melalui kegiatan ini telah dihasilkan 6 orang pengelola wisata yang memiliki keterampilan dalam promosi wisata secara online melalui website dan youtube. Kegiatan ini memberikan manfaat yang cukup signifikan dalam meningkatkan jumlah wisatawan.
Co-Authors Anjatino Anjatino, Anjatino Aulira Suryatidiningrum Banjarnahor, Samuel Kristian Alfredo Chandra Kurniawan, Chandra Eko Risdianto Elfi Yuliza Ellin Ernita Mahdalya Fitriani, Dyah Haryo, Julis Dani Irkohs, Irkhos Isma Coryanata Jarmuji Jarmuji Lizalidiawati , Lizalidiawati Lizalidiawati Lizalidiawati Mangantar R. B. Sinaga Manurung, Yeni Sartika Monaesa sagala Nanang Sugianto Refrizon Refrizon Rida Samdara Samuel Cristian Alfredo B Silaban, Angeli Suhendra Suhendra Suprijadi Suprijadi Suprijadi Suprijadi Tohari, Ahmad Syamsudin Tuti Herawati Ulandari, Tresi Pitria Verojenases, Fascal Warahma, Ella Yarmanto, Risky Budi Yolanda Saragih M. Saragih