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All Journal Jurnal Teknologi Perikanan dan Kelautan BULETIN OSEANOGRAFI MARINA Journal on Education Jurnal Chart Datum Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Gentio Harsono
Universitas Pertahanan RI
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Library & Information Science

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Purwarupa Informasi untuk Keselamatan Pelayaran Berdasarkan Karakteristik Eddy di Laut Banda : Information Prototype for Sailing Safety Based on Eddy Characteristics in the Banda Sea Lalu Kurnia Darmawan; Widodo Setyo Pranowo; Gentio Harsono; Nawanto Budi Sukoco; Iska Putra
Jurnal Chart Datum Vol. 6 No. 2 (2020): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v6i2.195

Abstract

Laut Banda merupakan perairan yang sangat dinamis oleh arus dan gelombang serta rute padat karena termasuk jalur perdagangan internasional yang merupakan bagian dari Alur Laut Kepulauan Indonesia (ALKI III), serta digunakan untuk berbagai kepentingan pelayaran. Penelitian ini bertujuan mengidentifikasi fenomena dan karakteristik Eddy yang terjadi di Laut Banda serta menyajikan informasi untuk keselamatan pelayaran berdasarkan kemunculan arus pusaran (Eddy). Pembangunan purwarupa informasi untuk keselamatan pelayaran ini menerapkan metode time series weekly analysis terhadap data komponen arus (U,V) harian level 3 periode tahun 2017 dari HYCOM Archieve. Arah arus dan jumlah kemunculan kejadian Eddy diidentifikasi dan dihitung kemunculannya per minggu. Pemetaan Eddy dilakukan guna memberikan informasi untuk keselamatan pelayaran. Hasil penelitian menunjukkan selama periode tahun 2017 arus Eddy di Perairan Laut Banda terbentuk sebanyak 85 kejadian dengan 34 kejadian Eddy tipe siklonik dan 51 kejadian Eddy antisiklonik. Titik pusat Eddy yang terjadi di Laut Banda pada kedua tipe Eddy umumnya bergerak sebanyak 0,25 – 2 derajat ke segala arah. Berdasarkan ukuran diameternya semua kejadian Eddy di Laut Banda bertipe Mesoscale Eddies dengan diameter dapat mencapai 50 – 200 kilometer. Diameter Eddy terbesar dengan ukuran 260,39 km, sedangkan diameter Eddy terkecil 74,58 km yang keduanya bertipe antisiklonik. Waktu pelayaran terbaik terhindar dari Eddy antisiklon di Laut Banda adalah pada Musim Peralihan I (Maret - Mei) dan II (September - November).
Telekoneksi Industri Migas dan Strategi Pertahanan Bawah Air untuk Peningkatan Pertahanan Laut Indonesia: Teleconnection Among The Oil Gas Industry and Underwater Defense Strategies to Improve Indonesian Sea Defense I Wayan Sumardana Eka Putra; Agus Saleh Atmadipoera; Henry Munandar Manik; Gentio Harsono; Adi Purwandana; M.Rizal Keulana; Dadang Handoko; Johar Setiyadi; widodo setiyo Pranowo
Jurnal Chart Datum Vol. 8 No. 2 (2022): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v8i2.206

Abstract

Sistem pertahanan negara hendaknya beradaptasi dengan perkembangan teknologi dan sains. Pengaplikasian teknologi akustik merupakan kunci dalam mengimplementasikan kebijakan pemerintah mengenai “Tujuh Pilar Poros Maritim Dunia” yang menuntut adanya sinergitas dari berbagai sektor yang berkecimpung di bidang kelautan. Bidang industri minyak dan gas (migas) menerapkan penggunaan peralatan seismik yang merupakan salah satu peralatan berbasis hidroakustik untuk kegiatan eksplorasi sumber daya alam dengan metode seismik refleksi, dimana metode ini dapat memberikan informasi geospasial kolom air hingga lapisan dibawah dasar laut, sedangkan pada bidang pertahanan memerlukan informasi pada kolom air hingga dasar perairan yang bertujuan untuk menunjang keselamatan navigasi bagi kegiatan patroli kapal selam dan pemuthakiran data batimetri. Penelitian ini bertujuan memberikan gambaran tentang sinkronisasi antara sektor industri migas dan pertahanan dalam mewujudkan kebijakan pemerintah dengan penerapan metode Seismik Oseanografi (SO) yaitu metode inversi data yang menggunakan hasil survei seismik untuk mengidentifikasi fenomena oseanografi kolom air seperti: pergerakan massa air, penaikan massa air dan gelombang internal di perairan Indonesia yang dapat ditelekoneksikan menjadi Peta Additional Military Layer (AML) untuk menunjang strategi pertahanan laut, dimana akibat adanya fenomena oseanografi tersebut dapat merubah karakteritik variabel massa air laut. Metode dalam artikel ini adalah deskritif kualitatif dengan telaah pustaka dan analisa SWOT yang menunjukkan pentingnya harmonisasi penggunaan data seismik. Diharapkan dengan adanya harmonisasi pemanfaatan data seismik dapat dirumuskan suatu informasi hidro-oseanografi spasial (hidros spasial) yang termutakhir , khususnya pada bidang pertahanan sehingga dapat menjadi cahaya kejayaan dan kedaulatan maritim Indoneisa serta akan memberikan keuntungan dan nilai strategis dari kegiatan survei seismik dalam bidang eksplorasi, stabilitas keamanan pertahanan dan kesejahteraan sosial perekonomian.
PERGESERAN HALMAHERA EDDY KAITANNYA DENGAN PRODUKTIVITAS TANGKAPAN IKAN CAKALANG DI PERAIRAN SEKITARNYA Gentio Harsono; Supartono Supartono; D Manurung; Agus S Atmadipoera; Fadlt Syamsudin; Mulyono S Baskoro
Jurnal Teknologi Perikanan dan Kelautan Vol 5 No 2 (2014): NOVEMBER 2014
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3884.945 KB) | DOI: 10.24319/jtpk.5.145-152

Abstract

The water between Mindanao and New Guinea is one of areas fisheries potential skipjack (Katsuwanus pelamis) most advanced in the western pacific. The main of fisheries industry this type of dominated by purse-seine by large size (50-100 Gross Tonnage). The role of a Halmahera Eddy is very importance in the dynamics of fisheries in the region, but there is no that explain it yet. Data series arrest skipjack catch per unit of effort (CPUE) of Western Central Pacific Fisheries Commission (WCPFC) for a decade the period July 2002-December 2012 analyzed in order to see the relationship between shifting Halmahera Eddy with the productivity skipjack in the study areas. The results show that the productivity skipjack in the study areas correlates strongly against a meridional shifting of Halmahera Eddy where CPUE showing an increase in skipjack with lag time on two months after Halmahera Eddy center shifted to the north. While to zonal shifting have a correlation in which weak.
Percampuran Vertikal Massa Air Lapisan Pertengahan Perairan Lifamatola pada Bulan Maret 2009 Gentio Harsono; Budi Purwanto; Anindya Wirasatriya; Sri Murtiana; Rifqi N. Agassi
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.56350

Abstract

Perairan Lifamatola menarik dikaji selain sebagai lintasan Arlindo juga proses percampuran massa airnya terjadi secara intensif. Tujuan penelitian ini adalah mengkaji percampuran turbulen di Perairan Lifamatola pada Maret 2009. Data salinitas, temperatur dan kedalaman diperoleh dari program Tropical Ocean Climate Study (TOCS) tahun 2009, kerjasama Badan Pengkajian Penerapan Teknologi (BPPT) dan Jamstec (Japan of Marine Science Earth and Technology) Jepang menggunakan RV. Kaiyo.  Analisis meliputi analisis skala Thorpe (LT), frekuensi Brunt Vaisala (N), disipasi energi kinetik turbulen (ε) dan estimasi nilai difusivitas eddy vertikal (KZ). Hasil  identifikasi karakteristik  massa air Samudera Pasifik,  North Pacific Intermediate Water (NPIW) pada perairan ini S-max tidak terlihat karena diduga sudah bertranformasi menjadi massa air dengan karakteristik yang baru akibat proses percampuran. Hasil perhitungan terhadap nilai frekuensi Brunt Vaisala, pada lapisan termoklin diperoleh nilai N2 tertinggi yaitu 0,05-0,15 s-1 pada kedalaman 100 m dan kedalaman 200 m, sementara lapisan tercampur berkisar 0,0- 0,01 s-1 dan lapisan dalam 0-0,005 s-1.  Lapisan termoklin memiliki nilai Td -5 m sampai 3 m, lapisan dalam berkisar -4 m sampai 5 m dan lapisan dalam berkisar -13m sampai 19 m. Nilai rata-rata disipasi energi kinetik turbulen (ε) dari semua lapisan yaitu sebesar 3.29 x 10-9 Wkg-1. Hasil dari rata-rata menunjukkan bahwa semakin bertambahnya kedalaman nilai disipasi energi kinetik turbulen (ε) semakin menurun. Nilai difusivitas paling tinggi terjadi pada lapisan termoklin dan menurun dengan semakin bertambah nya kedalaman. Nilai Kz pada lapisan permukaan antar sampling berbeda-beda, terjadi akibat Gelombang Internal dan aktivitas pasang surut.  Lifamatola waters are interesting to study apart from being the Arlindo trajectory as well as the process of intensive mixing. The aim of this research is to examine turbulent mixing in Lifamatola Waters in March 2009. Salinity, Temperature and Depth data were obtained from the Tropical Ocean Climate Study (TOCS) program in 2009, a collaboration between the Agency for the Assessment of the Application of Technology (BPPT) and Japan of Marine Science Earth and Technology  uses RV. Kaiyo. The analysis includes Thorpe scale analysis (LT), Brunt Vaisala frequency (N), turbulent kinetic energy dissipation (ε) and estimation of vertical eddy diffusivity (KZ) values. The results of identifying the characteristics of the Pacific Ocean wate mass, North Pacific Intermediate Water (NPIW) in these waters, S-max is not visible because it is thought to have been transformed into a water mass with new characteristics due to the mixing process. The results of the calculation of the Brunt Vaisala frequency value, in the thermocline layer, the highest N2 value was obtained, namely 0.05-0.15 s-1 at a depth of 100 m and a depth of 200 m, while the mixed layer ranged from 0.0-0.01 s-1 and inner layer 0-0.005 s-1. The thermocline layer has a Td value of -5 m to 3 m, the inner layer ranges from -4 m to 5 m and the inner layer ranges from -13m to 19 m. The average value of turbulent kinetic energy dissipation (ε) from all layers is 3.29 x 10-9 Wkg-1. The results of the average show that as the depth increases the dissipation value of turbulent kinetic energy (ε) decreases. The highest diffusivity value occurs in the thermocline layer and decreases with increasing depth. The Kz value in the surface layer varies between sampling, occurring due to internal waves and tidal activity.
Pemrosesan Citra Side Scan Sonar untuk Pemetaan Dasar Laut Pelabuhan Benoa Henry M. Manik; Liva Junaedi; Gentio Harsono
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1151.93 KB)

Abstract

Detection of seabed can be obtained with a high resolution using side scan sonar instrument. This instrument also provides geospatial information of underwater target. This paper aims are to visualize and to interpret side scan sonar imagery both qualitatively and quantitatively, to analyse acoustic backscatter of seabed, and to perform processing characteristics of sonar signal using wavelet transform. Side scan sonar data are processed through the geometric correction to establish the actual position in the image pixel. The location of research study is Benoa Port, Bali Indonesia. The sonar surveys consist of several track lines survey with operating frequency of 325 kHz. The seabed texture consists of gravel with backscatter value range from 13824 mV to 23680 mV and 8832 mV to 13312 mV for sand, sediment ripples of 17792 mV to 32640 mV, dredging seabed of 8000 mV to 19330 mV, texture of mound area has 32640 mV, and rocky outcrop has 14845 mV to 23552 mV. The results analysis of the signal characteristics using wavelet transform generally defines the location of peaks and valleys of the backscatter amplitude for each texture. The peak magnitude of each texture in red color indicates the intensity of the seabed texture is more rough, complex and solid, while the seabed texture is relatively flat and soft physic material has a low magnitude the value in blue color.
Dampak Polusi Udara terhadap Kesehatan dan Kesiapan Pertahanan Negara di Provinsi DKI Jakarta Anatansyah Ayomi Anandari; Achmad Farid Wadjdi; Gentio Harsono
Journal on Education Vol 6 No 2 (2024): Journal on Education: Volume 6 Nomor 2 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i2.4880

Abstract

Air pollution in DKI Jakarta Province has reached alarming levels, threatening the health and quality of life of millions of residents and damaging the integrity of national defense preparedness. As the capital and center of Indonesian government, Jakarta plays an important role in the country's defense and security structure. This research was conducted to understand and evaluate the complex impacts of air pollution, which relate not only to public health but also to defense readiness. Through empirical data analysis, interviews with stakeholders, and the application of geospatial intelligence from satellite imagery, this research found various variables that correlate between air pollution, public health, and defense readiness. One of the main findings is that high levels of air pollution have a significant impact on public health conditions, which in turn can disrupt the country's defense readiness. Therefore, these results demonstrate the need for comprehensive and coordinated mitigation actions between various parties, including the provincial government, central government, and the military. These policies and actions should focus on protecting public health, preserving critical military infrastructure, and preparing the country to face additional challenges that may arise, such as climate change. In an increasingly interconnected and complex global context, this research highlights the urgency for a more holistic approach to addressing the problem of air pollution and its multifaceted impacts
Pemanfaatan Teknologi Penginderaan Jauh Pada Geospatial Intelligence Dalam Mencegah Illegal Fishing Untuk Menciptakan Keamanan di Wilayah Perairan Indonesia Annisa Harum Sadewa; Gentio Harsono; Yosef Prihanto; Luwis Surani Haloho
Journal on Education Vol 7 No 1 (2024): Journal on Education: Volume 7 Nomor 1 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i1.7450

Abstract

Technology has become a necessity in the modern era. The use of remote sensing technology in geospatial intelligence can be an effective solution to detect and prevent illegal fishing activities in Indonesia's maritime areas. This study uses a literature review method by gathering in-depth insights from journals and books. The focus is on remote sensing technology in geospatial intelligence to prevent illegal fishing. The purpose of this research is to examine the role of remote sensing in securing and monitoring Indonesia's maritime areas against illegal fishing. A technology-based approach using satellite imagery can be utilized for early detection and surveillance of maritime areas in Indonesia. Satellite imagery provides spatial and temporal data. The results indicate that the integration of remote sensing technology in geospatial intelligence plays a crucial role in enhancing surveillance capabilities in Indonesia's maritime regions.
Pemanfaatan Teknologi Geospatial Intelligence (GEOINT) untuk Peningkatan Keamanan dan Pengelolaan Maritim di Indonesia Yeri Kusmantoro; Trismadi Trismadi; Gentio Harsono
Journal on Education Vol 7 No 1 (2024): Journal on Education: Volume 7 Nomor 1 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i1.7653

Abstract

Indonesia, as the largest archipelagic country in the world, faces significant challenges in maintaining maritime security and managing its marine resources. In this context, Geospatial Intelligence (GEOINT) has emerged as an important tool that can support maritime security strategies and management effectively. This study uses a literature study method to explore the role of GEOINT in supporting Indonesia's national security. The analysis was conducted by reviewing various literatures that discuss the application of GEOINT in maritime security, traffic surveillance, natural resource management, and emergency responsse to disasters. The results of the study indicate that GEOINT plays a crucial role in improving maritime surveillance through the use of satellite imagery, space sensors, and predictive analytics. This technology also supports maritime traffic management, marine resource conservation, and recovery after maritime disasters. However, the implementation of GEOINT in Indonesia still faces several challenges, including limited technological infrastructure and inter-agency coordination. The conclusion of this study emphasizes the importance of investing in GEOINT technology and increasing human resource capacity to maximize the potential of GEOINT in supporting Indonesia's maritime security. International collaboration and the development of supportive policies are also needed to overcome existing challenges and ensure the success of GEOINT implementation in Indonesia.
Co-Authors Achmad Farid Wadjdi Adi Purwandana Agus Atmadipoera Anatansyah Ayomi Anandari Anindya Wirasatriya Annisa Harum Sadewa Budi Purwanto D Manurung Dadang Handoko Fadlt Syamsudin Henry Munandar Manik I Wayan Sumardana Eka Putra Iska Putra Johar Setiyadi Lalu Kurnia Darmawan Liva Junaedi Luwis Surani Haloho M.Rizal Keulana Mulyono S. Baskoro Nawanto Budi Sukoco Rifqi N. Agassi Sri Murtiana Supartono Supartono Trismadi Trismadi Widodo Setiyo Pranowo Widodo Setyo Pranowo Yeri Kusmantoro Yosef Prihanto