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Andri Wahyudi
Department Of Marine Technology, Pangandaran Marine And Fisheries Polytechnic
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Evaluating Global Oil Data Reporting Consistency and Stability with Insights from Indonesia Taufik Roni Sahroni; Lulut Alfaris; Siagian, Ruben Cornelius; Andri Wahyudi; Anas Noor Firdaus; Ukta Indra Nyuswantoro
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2010

Abstract

Transparent and consistent oil data reporting is a critical component of global energy governance and market stability. This study evaluates the consistency, stability, and overall quality of global oil data reporting from 2002 to 2025 using the dataset of the Joint Organizations Data Initiative (JODI), with Indonesia employed as a regional reference case. The principal indicators applied include the Index of Reporting Consistency (IRC), the Reporting Volatility Index (RVI), and the Oil Data Availability Index (ODAI). Countries are classified according to market role (producer or importer), economic grouping, and geographical region. The analysis further incorporates K-means clustering and structural change detection to assess temporal stability and responsiveness to major global shocks. The findings reveal substantial variation in reporting performance across countries. Nations exhibiting high IRC values and low RVI scores generally possess more mature institutional and statistical capacities, whereas those with low IRC scores tend to face governance or data management constraints. Oil-producing countries typically demonstrate higher ODAI values but display greater vulnerability to systemic crises, while importing countries show relatively more stable reporting patterns. Major global shocks in 2008, 2014, 2020, and 2022 exerted asymmetric impacts on producers and importers, highlighting structural vulnerabilities within the global energy reporting system. Indonesia demonstrates consistently strong reporting performance, with an ODAI value of 0.944, exceeding the averages of ASEAN (0.889) and OPEC (0.829). The country records a non-reporting rate of only 5.6% and a maximum non-reporting duration of ten months. This study addresses a gap in long-term, shock-sensitive analyses and introduces an integrated framework combining IRC, RVI, and ODAI as a novel approach for assessing oil data reporting quality. The findings provide a foundation for strengthening institutional capacity, enhancing regional coordination, and developing crisis-resilient reporting systems, while positioning ODAI as a practical indicator for evaluating energy governance and policy transparency.
Seasonal Variability of Surface Ocean Currents in the Southern Java Offshore based on Global Reanalysis Data Abdul Rahman; Lulut Alfaris; Andri Wahyudi; Anas Noor Firdaus; Ukta Indra Nyuswantoro; Nazish Laeiq
Geosfera: Jurnal Penelitian Geografi Vol 4, No 2 (2025): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v4i2.37281

Abstract

Surface ocean currents are a key component of marine circulation systems and play an important role in controlling physical and ecological processes in Indonesian sea. The Southern Java sea, which are directly connected to the eastern Indian Ocean, are characterized by dynamic surface circulation influenced by large-scale oceanic processes and seasonal monsoonal forcing. This study investigates the patterns and characteristics of surface ocean currents in the Southern Java sea using global ocean reanalysis data visualized through the Earth Nullschool platform. Seasonal variability was examined using representative monthly maps corresponding to the major phases of the Asian and Australian monsoon system, including January (West Monsoon), April (first transition season), July (East Monsoon), and October (second transition season). A descriptive analytical approach was applied to identify spatial and temporal variations in surface current direction and relative intensity across both coastal and offshore areas. The analysis reveals distinct seasonal differences in surface current behavior. During the East Monsoon period, surface currents exhibit stronger intensity and a more consistent alongshore orientation, reflecting enhanced wind-driven circulation and offshore transport. In contrast, the West Monsoon and transitional seasons are marked by weaker currents and greater directional variability, particularly in nearshore sea. These findings indicate that monsoonal wind forcing, combined with large-scale Indian Ocean circulation, is the primary driver of surface current variability in the study area. This study highlights the usefulness of reanalysis-based visualization for regional-scale oceanographic assessments in areas with limited in-situ observations. The results provide baseline information that supports regional oceanographic research and offers practical insights for marine resource management, fisheries, navigation, and coastal planning in the Southern Java sea
Correlation Between Seismicity Rates and Earthquake Return Periods in the Southern Offshore of West Java, Indonesia Lulut Alfaris; Andri Wahyudi; Martin Anjar Ginanjar; Ukta Indra Nyuswantoro; Nazish Laeiq
Geosfera: Jurnal Penelitian Geografi Vol 4, No 2 (2025): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v4i2.36433

Abstract

The Indian Ocean region south of Java constitutes a highly active seismic zone dominated by the subduction of the Indo-Australian plate beneath the Eurasian plate. This study investigates the seismicity parameters (a-value and b-value) using the Gutenberg-Richter law and estimates the return periods of significant earthquakes. Analyzing earthquake catalog data covering a span of 53 years, we identified the Magnitude of Completeness (Mc) and calculated frequency-magnitude distributions. The results reveal a b-value of 1.17, indicating a region characterized by high material heterogeneity and complex stress release mechanisms. Furthermore, the probabilistic return period for a magnitude 6.5 earthquake is estimated to be approximately 19.24 years. These findings suggest that while the region exhibits frequent moderate-magnitude energy release, the potential for destructive tsunamigenic events remains significant, necessitating robust hazard mitigation strategies for the southern coast of Java.
PERLINDUNGAN HUKUM TERHADAP HAK-HAK PEKERJA AKIBAT PEMUTUSAN HUBUNGAN KERJA DENGAN ALASAN EFISIENSI DI PT. INHIIL SARIMAS KELAPA Wahyudi, Andri; Wandi; Wahyuni, Fitri
JURNAL HUKUM DAS SOLLEN Vol 11 No 1 (2025): Jurnal Hukum Das Sollen
Publisher : Fakultas Hukum Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/das-sollen.v11i1.3990

Abstract

ABSTRAK Salah satu permasalahan hukum di bidang ketenagakerjaan adalah Pemutusan Hubungan Kerja, Meskipun telah banyak regulasi yang mengatur mengenai perlindungan hukum terhadap pekerja, dalam praktiknya pengusaha tidak menerapkan regulasi tersebut dengan baik. Rumusan masalah dalam penelitian ini ialah, Bagaimana Perlindungan Hukum Terhadap pekerja akibat Pemutusan Hubungan Kerja dengan alasan efisiensi di PT. Inhil Sarimas Kelapa, Apa saja kendala dan upaya Perlindungan hukum terhadap hak pekerja akibat Pemutusan Hubungan Kerja dengan alasan efeseinsi di PT. Inhil Sarimas Kelapa.Penelitian ini bertujuan Untuk menganalisis bentuk perlindungan hukum terhadap hak pekerja yang akibat Pemutusan Hubungan Kerja dengan alasan efiseinsi di PT. Inhil Sarimas Kelapa dan Untuk mengetahui dan menganalisis kendala dan upaya Perlindungan hukum terhadap hak pekerja akibat Pemutusan Hubungan Kerja dengan alasan efeseinsi di PT. Inhil Sarimas Kelapa.Metode penelitian yang dipergunakan adalah jenis penelitian empiris dimana penelitian ini mengkaji adanya ketidaksesuaian antara Das Sollen dan Das Sein. Populasi dalam penelitian ini adalah seluruh matan Pekerja PT. Inhil Sarimas Kelapa yang terdampak PHK dengan alasan Efisiensi pada tahun 2023, adapun sample dari penelitian ini ialah 30% dari seluruh Pekerja yang terdampak PHK. Hasil dari penelitian ini menjawab rumusan masalah bahwa perlidungan hukum belum terlaksana dengan semestinya dibuktikan dengan masih hak-hak dari Pekerja yang terdampak Pemutusan Hubungan Kerja dengan alsan efiseinsi yang masih belum ditunaikan sepenuhnya oleh PT. Inhil Sarimas kelapa sampai dengan bulan desember 2024. Kendala Perusahaan dalam melaksankan kewajibanya ialah karena faktor keuangan perusahaan yang belum stabil disebabkan karena perusahaan belum beroperasi. Kata Kunci: Perliudungan Hukum, Hak-hak Pekerja, Pemutusan Hubungan Kerja, Efisiensi
Co-Authors Abdul Rahman Afriana Kusdinar Anas Noor Firdaus Arif Baswantara Dedi Sutisna Firdaus, Anas Noor Fitri Wahyuni Hakim, Muhammad Romdonul Hasan Basri Hasan Basri Kennedi Sembiring Lulut Alfaris Maman Hermawan Martin Anjar Ginanjar Martin Anjar Ginanjar Nazish Laeiq Nazish Laeiq Ramdani, Fuzi Siagian, Ruben Cornelius Suhernalis Taufik Roni Sahroni Triyono, Heri Ukta Indra Nyuswantoro Ukta Indra Nyuswantoro Ukta Indra Nyuswantoro Wakhudin Wakhudin, Wakhudin wandi Wibowo, Yuni Ari