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All Journal Indonesian Journal of Geography Jurnal Kelautan : Indonesian Journal of Marine Science and Technology UNEJ e-Proceeding Journal of Government and Civil Society ASRO JOURNAL - STTAL International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal HIDROPILAR Jurnal Chart Datum Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Jurnal Riset Kelautan Tropis (J-Tropimar)
Viv Djanat Prasita
Universitas Hang Tuah
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Patterns of Physico-Chemical Interactions of Heavy Metal Lead (Pb) in the Jagir River Estuary System, Surabaya Prasita, Viv Djanat; Mahmiah, Mahmiah; Widagdo, Supriyatno
Indonesian Journal of Geography Vol 57, No 1 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.99161

Abstract

The Jagir River estuary system constitutes a significant ecosystem in Surabaya that sustains the livelihoods of the surrounding communities. Despite its importance, the river is subjected to substantial pollution originating from domestic and industrial waste. Therefore, this study aims to investigate the patterns of physicochemical interactions between lead (Pb) in the Jagir River estuary system. Water and sediment samples were collected at 5 strategic points, and the concentration of Pb was analyzed using Inductively Coupled Plasma optical emission spectrometry (ICP-OES). The correlation between Pb and various environmental parameters (temperature, salinity, DO, pH & TDS) was analyzed using Principal Component Analysis (PCA). The results showed that the concentrations of Pb in the water column and sediment were 0.1637 – 1.8905 ppm and 0.0735 – 0.2349 ppm, respectively, exceeding the established quality standards for water. Pb content in the waterbody exhibited an increasing trend from upstream to the sea. These results show the salinity and tidal parameters as characteristic features of the Jagir River estuary system, which influence Pb content in water and sediment. The distinct characteristics of this estuary system vary for each region or location, showing that the results can contribute to the development of environmental policies and monitoring of water quality.Received: 2024-08-15 Revised: 2024-09-12 Accepted: 2025-01-25 Published: 2025-04-28 
Analisis Karakteristik Arus pada Beberapa Kedalaman di Laut Jawa Sepanjang Tahun 2024: Analysis of Current Characteristics at Various Depths in The Java Sea Throughout 2024 Pratama , Brachmantiyo Rachman; Pranowo, Widodo Setiyo; Prasita, Viv Djanat
Jurnal Chart Datum Vol. 11 No. 1 (2025): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v11i1.375

Abstract

Laut Jawa merupakan perairan semi-tertutup yang memiliki karakteristik oseanografi kompleks akibat pengaruh sirkulasi regional dan sistem angin muson. Penelitian ini bertujuan untuk menganalisis karakteristik arus laut pada beberapa kedalaman di Laut Jawa, dengan fokus pada variasi arah dan kecepatan arus secara vertikal serta pengaruh musiman. Data arus diperoleh dari model oseanografi Copernicus Marine Environment Monitoring Service (CMEMS) dan dianalisis menggunakan perangkat lunak Ocean Data View (ODV). Hasil penelitian menunjukkan bahwa pola arus laut di Laut Jawa Diduga dipengaruhi oleh dinamika angin muson, dengan perbedaan signifikan antara Musim Barat dan Musim Timur. Pada Musim Barat, arus permukaan umumnya bergerak dari barat ke timur, sedangkan pada Musim Timur arah dominan bergeser dari timur ke barat. Secara vertikal, kecepatan arus cenderung menurun seiring bertambahnya kedalaman. Rata-rata kecepatan arus permukaan berada pada kisaran 0,05–0,35 m/s, sedangkan pada kedalaman menengah dan bawah berkisar antara 0,01–0,15 m/s. Temuan ini menunjukkan bahwa perbedaan kedalaman memberikan pengaruh signifikan terhadap distribusi arus, serta mencerminkan peran penting angin muson dan topografi lokal dalam mengatur pola sirkulasi di Laut Jawa.
Stakeholder Interaction in the Development of Oxygen Ecotourism on Gili Iyang Island, Indonesia Moh Musleh; Agus Subianto; Viv Djanat Prasita
Journal of Government and Civil Society Vol 7 No 2 (2023): Journal of Government and Civil Society (October)
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jgcs.v7i2.8251

Abstract

Oxygen Ecotourism on Gili Iyang Island has the highest oxygen levels reaching 21.5% above the normal threshold, the highest compared to other regions in Indonesia. This article adopts the collaborative viewpoint of the Quintuple Helix model, to discuss stakeholder interactions and highlight the level of success and identify several problems in the development of oxygen ecotourism on Gili Iyang Island, Sumenep Regency. This qualitative research uses a case study approach and visualizes collective interactions between stakeholders through the following five subsystems: 1) Education system, 2) Economic system, 3) Political system, 4) Media-based and culture-based society, 5) and Natural environment, Natural Environment Society based on the Quintuple Helix model from Carayannis and Campbell (2010). Data collection was carried out through observation, semi-structured interviews, and document review. The research results show that the Political System contributes to the initiation of ecotourism stakeholder collaboration, while an important role in the development of ecotourism has been played by the Higher Education System, as well as media-based and culture-based Societies. However, this collaboration is not yet optimal because it is still informal, and the lack of innovation from the Economic System, as well as the Natural Environment, and the Natural Environment of Society, is still limited. The findings of this research recommend that the role of local government (political system) needs to be increased by developing policies that ensure the maintenance of oxygen levels, increasing innovation in the use of local natural resources to support tourism, and institutionalizing stakeholder collaboration to ensure sustainable collaboration.Ekowisata Oksigen di Pulau Gili Iyang memiliki kadar oksigen tertinggi mencapai 21,5% di atas ambang batas normal, tertinggi dibandingkan wilayah lain di Indonesia. Artikel ini mengadopsi sudut pandang kolaborasi model Quintuple Helix, untuk membahas interaksi pemangku kepentingan dan menyoroti tingkat keberhasilan serta mengidentifikasi beberapa masalah dalam pengembangan ekowisata oksigen di Pulau Gili Iyang, Kabupaten Sumenep. Penelitian kualitatif ini menggunakan pendekatan studi kasus dan memvisualisasikan interaksi kolektif antara stakholder melalui lima subsistem berikut: 1) Sistem pendidikan, 2) Sistem ekonomi, 3) Sistem politik, 4) Masyarakat berbasis media dan berbasis budaya, 5) dan Lingkungan alam, Lingkungan Alam Masyarakat berdasarkan model Quintuple Helix dari  Carayannis dan Campbell (2010). Pengumpulan data dilakukan melalui observasi, wawancara semi terstruktur, dan telaah dokumen. Hasil penelitian menunjukkan bahwa Sistem Politik berkontribusi pada inisiasi kolaborasi pemangku kepentingan ekowisata, sementara peran penting dalam pengembangan ekowisata telah dimainkan oleh Sistem Pendidikan Tinggi, serta Masyarakat berbasis media dan berbasis budaya. Namun kolaborasi tersebut belum optimal karena masih bersifat informal, serta kurangnya inovasi dari Sistem Ekonomi, maupun Lingkungan Alam, dan Lingkungan Alam Masyarakat masih terbatas. Temuan penelitian ini merekomendasikan bahwa peran pemerintah daerah (Sistem politik) perlu ditingkatkan dengan mengembangkan kebijakan yang menjamin pemeliharaan kadar oksigen, meningkatkan inovasi dalam pemanfaatan sumber daya alam lokal untuk mendukung pariwisata, dan melembagakan kolaborasi pemangku kepentingan untuk memastikan kolaborasi yang berkelanjutan.
Co-Authors Agus Subianto Ahmad Nabil Wahyu Faraby Aries Susanto Asbar Asbar Bintoro, Rudi Siap Budi Rianto Damai, Rosaria Ria Dyan Viegas Wibisono Fajar Setiawan Kuncoro Teguh Setiawan Lunariana Lubis Mahmiah Moh. Musleh Muhamad Samodro Abdulrohiim Rohiim Muhammad Abdul Zain Muhammad Hafiz Nirmalasari I. Wijaya Nurul Rosana Nurul Rosana, Nurul Permatasari, Ima Nurmalia Pranowo , Widodo Setiyo Pratama , Brachmantiyo Rachman Prima Aris Wardhani Rr. Lilik Ekowati Rudi Siap Bintoro Sony Kunila Sugianto, Erik Supriyatno Widagdo Uciek Darmayani Wahyu, Inge Eka Nur Widagdo, Supriyatno Widodo S Pranowo