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All Journal Jurnal Geocelebes PROMINE ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Jurnal Pengabdian Papua
Marcelino N. Yonas
Jurusan Teknik Geologi Dan Pertambangan Universitas Cenderawasih
Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Engineering Environmental Science Languange, Linguistic, Communication & Media Medicine & Pharmacology Other

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Geologi dan Potensi Batubara di Daerah Bonggo dan Sekitarnya Kabupaten Jayapura, Propinsi Papua Marcelino N. Yonas
PROMINE Vol 4 No 1 (2016): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1583.628 KB) | DOI: 10.33019/promine.v4i1.99

Abstract

Geographically, the study area is in the region and surrounding Bonggo, Jayapura Regency. Now adays, the energy needs requires a continuous exploration in energy commodities (oil and coal).Geologically, Jayapura Residence has considerable potential for coal commodity. The research itselfis located at coordinates 139025'51 "- 139039'37" BT and 2038'20 "- 2027'46" LS. The method used inthis research are geological mapping, SRTM image interpretation and analysis of the gravity anomaly.From the results of research have encountered the presence of local coal on the river wiruway but hasuntapped potential to be mined economically. From the analysis of satellite imagery and SRTM dataprocessing gravity so, alleged anomalies while the potential presence of a carrier lithology of coal isrelatively in eastern and widespread to the north as indicated by the value anomaly contour growingeastward. This is supported by existing of coal deposits in the east outside the study area.
Estimasi Kandungan Karbon dan Biomassa Hutan Mangrove Teluk Youtefa Kota Jayapura Yonas, Marcelino N.; Tanjung, Rosye H. R.; Rejauw, Korinus; Paiki, Kalvin
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 7 No 2 (2024): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v7i2.4277

Abstract

Ekosistem mangrove memiliki fungsi ekologis sebagai penyerap dan penyimpan karbon. Mangrove menyerap CO2 pada saat proses fotosintesis, kemudian mengubahnya menjadi karbohidrat dengan menyimpannya dalam bentuk biomassa pada akar ,pohon, serta daun. Tujuan dari penelitian ini adalah untuk mengetahui total above ground biomass, belowground biomass, simpanan karbon atas, simpanan karbon bawah, dan karbon organik pada sedimen dasar di Hutan Mangrove Demta. Sampling dilakukan dengan metodepurposive sampling dengan dasar pertimbangan berupa jenis, kerapatan serta diameter pohon mangrove. Estimasi biomassa digunakan metode tanpa pemanenan dengan mengukurdiameter at breast height (DBH, 1.3 m) mangrove. Berdasarkan hasil penelitian mangrove secara lansung di lapangan, diperoleh Kerapatan mangrove, Biomassa Mangrove, Stok Karbon Mangrove, Cadangan Karbon Organik Tanah dan Total Karbon mangrove di Teluk Youtefa bervariasi. Mangrove di Teluk Youtefa terdiri dari dua tipe vegetasi yaitu vegetasi primer dan sekunder, adapun hasil penelitian dapat dilakukan pada vegetasi primer. Kondisi ekoekosistem mangrove disekitarnya merupakan mangrove tua dengan kondisi tegakan yang didominasi oleh strata pohon, adapun dari hasil survei lapangan diketahi mangrove tersebut memiliki potensi ekonomi terutama kepentingan parawisata dan pemukiman masyarakat Kampung Naffri, Engggros dan Tobati. Hasil analisis karbon organic tanah pada lokasi penelitian berberda pada kedua stasiun, hasil penelitian ditemukan pada stasiun 1 berkisar antara 1.025 – 1.029 ton/m², total karbon diperoleh 3.079 ton/m² dan rata-rata 1.026 ton/m². Stasiun berkisar antara 1.936-1.941 ton/m², total karbon 5.819 ton/m² dan rata-rata 1.940 ton/m²
Assessment of Ground Deformation and Landslide Susceptibility Using InSAR and Hypsometric Data in Jayapura City, Papua Anas, Nur Ayu; Hasudungan, Harsan Ingot; Indrajati, Rahmat; Yonas, Marcelino N.; Hutami, Harnanti Y.
JURNAL GEOCELEBES Vol. 9 No. 2: October 2025
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70561/geocelebes.v9i2.45404

Abstract

Ground deformation and landslides are major geohazards affecting Jayapura City, Papua, due to its active tectonic setting and steep topography. This study aims to assess the correlation between surface deformation and landslide susceptibility using a combination of Interferometric Synthetic Aperture Radar (InSAR) and hypsometric analysis. Sentinel-1A SAR data from ascending and descending tracks, combined with DEMNAS elevation data, were used to detect deformation patterns and evaluate geomorphological maturity through hypsometric parameters. The results reveal significant deformation patterns, including subsidence up to –0.77 m and uplift up to +0.25 m, predominantly concentrated in sub-watersheds Sw2, Sw3, and Sw4. Hypsometric analysis indicates that most sub-watersheds are in the mature geomorphological stage (HI between 0.476 and 0.495), except Sw14, which is classified as young (HI = 0.501). Validation with the landslide inventory further confirms this correlation: 75% of documented landslides occurred in areas of high deformation, while 25% were associated with moderate deformation, and none in low or stable zones. These findings provide essential insights for disaster risk reduction, highlighting priority areas for slope stabilization, land-use management, and early warning systems.
Penerapan Unit Penyaring Air untuk Mendukung Ekowisata Isyo Hills di Kampung Repang Muaif, Distrik Nimbokrang, Kabupaten Jayapura Yonas, Marcelino N.; Maury, Hendra K.; Siregar, Leonard; Tanjung, Rosye H.R.
JURNAL PENGABDIAN PAPUA Vol 9 No 3 (2025)
Publisher : LPPM Uncen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jpp.v9i3.4881

Abstract

Repang Muaif Village, located in Nimbokrang District, Jayapura Regency, has significant potential for ecotourism development. However, limited access to clean water remains a major challenge for the management of Isyo Hills Ecotourism. Surface water used by the community contains high levels of organic matter and sediment, resulting in murky water that affects visitor comfort. This community service project aimed to develop and implement a simple water filtration unit using gravity-based filtration techniques. The methodology included site surveys, technical training, and community-based construction of the filtration system using locally available materials. The results show significant improvement in water quality, particularly in turbidity and pH levels. The treated water became clearer, and its pH increased from 6.2 to 7.1, meeting acceptable standards for non-drinking daily use. This technology is easy to replicate and maintain, empowering local communities to sustainably manage clean water resources in support of eco-tourism activities. 
Co-Authors Anas, Nur Ayu Hasudungan, Harsan Ingot Hendra Kurniawan Maury Hutami, Harnanti Y. Indrajati, Rahmat Kalvin Paiki Rejauw, Korinus Rosye H.R. Tanjung Siregar, Leonard