Claim Missing Document
Check
Articles

Determination Of Subsurface Aquifers and Distribution of Groundwater Table Depth in Wamena City, Jayawijaya Regency, Mountainous Papua Province Raymond Feril Hattu; Mujiati Mujiati; Duha Awaluddin; Ira Widyastuti; Dewi Ana Rusim; Bernathius Julison
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 12 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i12.8815

Abstract

This study was conducted to determine the existence of subsurface aquifers and the distribution of groundwater-surface depth in Jayawijaya Regency, Mountainous Papua Province. The background of this research is the need for optimal groundwater management in areas with high topography such as Wamena City. The method used was a geophysical survey with the Wenner-Schlumberger configuration resistivity geoelectric technique to identify the aquifer layer. Primary data was obtained through direct measurements using geoelectric devices and GPS, while secondary data was obtained from related literature. The results showed that there were free aquifers with a depth of 25-105 meters and depressed aquifers at a depth of 145-270 meters in various research locations. The distribution of this aquifer is highly dependent on local geological conditions, with the availability of groundwater quite high in some areas and minimal in other areas such as Kampung Sabulama and Wasawa. In conclusion, the resistivity geoelectric method is effective for mapping the distribution of aquifers, which can further be used as a basis for groundwater management in the study area.
Analysis of Liquefaction Potential in The Youtefa Bay Area, Jayapura City Emilyano Joel O. Wayangkau; Duha Awaluddin Kurniatullah; Dewi Ana Rusim; Alfian Adie Chandra; Helen Gianditha Wayangkau
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 12 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i12.8831

Abstract

The distribution of soil in Jayapura City, especially the Youtefa Bay area, consists of three dominant soil types that then form the stratigraphy of the local soil layer, namely allifial deposits, silt silt/silt clay, and fine, uniformly grained sand. Soil conditions like this have great potential for liquefaction, especially since this area is mostly passed by fault lines that have the potential to cause earthquakes. The groundwater table factor that is very close to the surface soil is also an important factor in the occurrence of liquifaction. There are 2 ways to analyze the potential for liquifaction, namely by laboratory test and from field test data. The approach to calculating field test data is CPT (Cone Penetration Test) testing. The results obtained were the Cyclic Stress Ratio (CSR) value and the Cyclic Resistance Ratio (CRR) value obtained by simulating seismic data using an earthquake strength of 6.5 on the riter scale and a pic ground acceleration value (0.3), then based on the results of the cone penetration test (CPT)/Sondir showed a maximum value of CRR 2.88, a minimum value of 0.21, a maximum CSR value of 3.70, a minimum value of 2.25. The maximum value of FS is 0.97, the minimum value is 0.07. There are 6 points at the research location that have the potential for liquefaction (Very High), namely points S1, S2, S5, S7, S8, S10, while 3 points with medium potential (High), namely points S3, S4, S9 for those with low potential (Low) S6.
PEMODELAN SPASIOTEMPORAL PERSEBARAN LAHAN TERBANGUN DI DISTRIK KURIK, KABUPATEN MERAUKE Agriarso Wahyu Septiawan, Agriarso Wahyu Septiawan; Mujiati, Mujiati; Dewi Ana Rusim, Dewi Ana Rusim
Plano Madani : Jurnal Perencanaan Wilayah dan Kota Vol 15 No 1 (2026)
Publisher : Jurusan Teknik Perencanaan Wilayah dan Kota, Fakultas Sains dan Teknologi, Universitas Islam Negeri Alauddin Makassar

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

Abstract

This study examines the spatiotemporal patterns of built-up land changes in Kurik District, Merauke Regency, from 2015 to 2024. Utilizing Landsat 8 and 9 satellite imagery alongside supervised classification and Change Detection Analysis methods, the research aims to comprehensively model spatial and temporal dynamics of land cover transformation. Internal and external validations yielded classification accuracies exceeding 90% with kappa indices above 0.80, despite challenges arising from spectral similarities between built-up areas and low-density vegetation. The analysis reveals a significant increase in built-up land area driven by population growth and infrastructure expansion, particularly after 2020. High-density vegetation remains dominant but experienced decline due to forest degradation, followed by natural succession recovery. The distribution of built-up land varies across villages, reflecting heterogeneous development pressures and socio-economic dynamics. This study underscores the necessity of spatial planning management based on geographic information systems to balance development needs with sustainable agricultural land conservation. Limitations related to spatial resolution and field data present challenges for future research. Methodologically, the study offers valuable contributions to spatiotemporal modeling supporting sustainable agrarian regional planning in Papua and comparable areas.
The Impact of Pavement Condition Index on Life Cycle Cost of Tiom-Kuyawage and Tiom-Balingga Road Sections in Lanny Jaya Regency Yaro Wanimbo; Bahtiar Bahtiar; Bernathius Julison; Harmonis Rante; Dewi Ana Rusim
Journal of Social Research Vol. 4 No. 7 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i7.2614

Abstract

The Papua Mountains region has extreme geographical challenges that have an impact on the high need for road infrastructure maintenance. This study aims to analyze the relationship between the value of the Pavement Condition Index (PCI) and Life Cycle Cost (LCC), and to consider estimated inflation and net present value (NPV) as the basis for long-term budget planning. The study was conducted on the Tiom–Kuyawage (4.6 km) and Tiom–Balingga (2.7 km) roads in Lanny Jaya Regency. The PCI value in Tiom–Kuyawage has decreased significantly from 89.19 (2023) to 58.30 (2025), while Tiom–Balingga remains high at 87.44 (2025). The projected total maintenance cost for 20 years (2025–2045) shows a need of IDR 201.42 billion for Tiom–Kuyawage and IDR 122.62 billion for Tiom–Balingga. However, if calculated based on present value (NPV), assuming inflation of 3.09% and an interest rate of 5.04%, the actual need will be IDR 105.75 billion and IDR 64.58 billion, respectively. These findings suggest that the deterioration of road conditions (PCI) directly raises the cost of maintenance (LCC), and that the use of an NPV-based financial approach is important for budget efficiency. This study recommends a road maintenance strategy based on actual conditions, to be carried out periodically in the mountainous Papua region.
The Influence Of Road Geometry On The Central Government Policy For The Trans Papua Road Segment Iv Jayapura–Elelim–Wamena Mexan Andry Rumagit; Bahtiar Bahtiar; Dewi Ana Rusim; Mujiati Mujiati; Bernathius Julison
Journal of Social Research Vol. 4 No. 7 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i7.2615

Abstract

The Trans Papua road network spans 3,259.45 km, comprising 58.24% national roads (1,898.32 km) and 41.76% strategic roads (1,361.13 km). A specific issue arises on the Trans Papua Segment IV (Jayapura–Elelim–Wamena), where the geometric design of the road does not align with the standards set in the Ministry of Public Works and Housing Regulation No. 5 of 2023 regarding technical requirements for road design. This non-compliance poses risks of traffic accidents and impacts travel time, particularly for essential vehicles like fuel supply trucks, which cannot navigate certain segments due to the road's steep gradient (overgrade). This study aims to analyze the compliance of the geometric design on the Jayapura–Elelim–Wamena road segment with the established technical standards and its alignment with the central government's policy to enhance the local economy and ensure equitable pricing in mountainous regions. The research findings reveal that while road handling in Segment IV Jayapura–Elelim–Wamena has been managed by the BPJN Jayapura and BPJN Wamena, the existing geometric conditions do not meet the requirements of Permen PUPR No. 5 of 2023. The current policy focuses on maintaining the functionality of the road through preservation work packages rather than addressing the design deficiencies. This study underscores the need for more comprehensive upgrades to meet regulatory standards for safe and efficient road use.
The Effect of the Construction Contract System on the Quality of Contractors' Work in Road and Bridge Construction Projects in Mountainous Papua Province Yompi Lani; Bernathius Julison; Dewi Ana Rusim; Mujiati Mujiati; Bahtiar Bahtiar
Journal of Social Research Vol. 4 No. 11 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i10.2810

Abstract

The Lumpsum contract system with a Fix Price value with the financing system is Contractor's Full Prefinanced (CPF). This system will be implemented for owners to ease costs, considering that financing is charged to contractors 100%. and paid 30 days after the minutes of the PHO were signed by both parties, Rato (20018). One of the contract systems used in the contract for the purchase of a construction project is the Remeasure Contract (Unit Price). Bridge construction infrastructure is one of the land transportation infrastructure that has an important role in the distribution of goods and services as well as mobility for the community and other economic sectors. Therefore, bridge construction plays a very important role in economic growth in a region. From the above background, the author needs to re-analyze a construction project in the Mountainous Papua Province in terms of the quality of work of the contractor, the lumpsum contract system, and the unit price contract system in the bridge construction project. The results of this study are as follows: the effect of the Lumpsum contract system on the quality of contractors' work in road and bridge construction projects is GOOD. The effect of the Unit Price contract system on the quality of contractors' work in road and bridge construction projects is GOOD. There is no effect of the contract system on the quality of contractors' work on road and bridge construction projects in Papua Mountainous Province.
Pengaruh Implementasi Sistem Manajemen Mutu Berbasis ISO 9001:2015 terhadap Kualitas Proyek Konstruksi Jalan di Provinsi Papua Barat Daya Kristoper Lemauk; Julison Julison; Bahtiar Bahtiar; Dewi Ana Rusim; Mujiati Mujiati
Jurnal Multidisiplin Indonesia Vol. 5 No. 6 (2026): Jurnal Multidisiplin Indonesia
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jmi.v5i6.2751

Abstract

Pembangunan infrastruktur jalan di Provinsi Papua Barat Daya membutuhkan sistem pengendalian mutu yang konsisten karena proyek konstruksi jalan memiliki kompleksitas tinggi, melibatkan banyak pihak, serta berpengaruh langsung terhadap konektivitas dan pelayanan publik. Penerapan Sistem Manajemen Mutu berbasis ISO 9001:2015 menjadi salah satu pendekatan penting untuk memastikan proses pekerjaan berjalan sesuai standar, memenuhi kebutuhan pemilik proyek, serta mendukung peningkatan kualitas proyek secara berkelanjutan. Penelitian ini bertujuan untuk menganalisis tingkat implementasi ISO 9001:2015, menilai kualitas proyek konstruksi jalan, mengkaji hubungan penerapan sistem manajemen mutu terhadap kualitas proyek, serta mengidentifikasi faktor penghambat dominan dalam pelaksanaannya. Penelitian ini menggunakan pendekatan kuantitatif deskriptif dengan teknik pengumpulan data melalui kuesioner dan wawancara kepada kontraktor, konsultan pengawas, dan Pejabat Pembuat Komitmen yang terlibat dalam proyek jalan di Provinsi Papua Barat Daya. Data dianalisis menggunakan statistik deskriptif dan uji korelasi dengan bantuan SPSS 25. Hasil penelitian menunjukkan bahwa tingkat penerapan ISO 9001:2015 mencapai 72,57% dan berada pada kategori baik. Kualitas proyek konstruksi jalan juga dinilai baik, terutama pada aspek ketepatan waktu, kesesuaian biaya, standar mutu pekerjaan, dan keselamatan kerja. Namun, masih ditemukan hambatan pada pelayanan keluhan pelanggan, audit periodik, pelatihan SDM, peremajaan alat, dan evaluasi kinerja. Penelitian ini menyimpulkan bahwa ISO 9001:2015 berhubungan positif dengan kualitas proyek, tetapi penerapannya perlu diperkuat secara praktis dan berkelanjutan.