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All Journal Jurnal Pertahanan : Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity Jurnal Chart Datum
Dwi Jantarto
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Earth & Planetary Sciences Energy Environmental Science Other

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ANALYSIS OF THE EFFECTIVENESS OF JOINT HYDROGRAPHIC SURVEY INDONESIA - SINGAPORE - MALAYSIA TO ENHANCE SAFETY NAVIGATION IN THE STRAIT OF MALACCA AND SINGAPORE Janjan Rechar; Dwi Jantarto; Abdiyan Syaiful
Jurnal Pertahanan: Media Informasi ttg Kajian & Strategi Pertahanan yang Mengedepankan Identity, Nasionalism & Integrity Vol 6, No 3 (2020)
Publisher : The Republic of Indonesia Defense University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33172/jp.v6i3.954

Abstract

The purpose of the Joint Hydrographic Survey (JHS) implementation in Straits of Malacca and Singapore (SOMS) is to improve navigation safety in TSS by using Multibeam Echosounder  (MBES) technology. This is especially important given the increasing number of ships carrying out cross-transit through SOMS from year to year, while hydrographic information has not been updated since 1998. This study aims to analyze the effectiveness of JHS activities at SOMS conducted by Indonesia, Malaysia, and Singaporerelated to Indonesia's interests,  specifications, and procedures, as well as the use of force in JHS activities. This study uses qualitative methods with an exploratory approach and used the NVivo Plus 12 application to find themes from field interviews and used the Soft System Methodology (SSM). Based on the results of the study can be concluded that the effectiveness of JHS activities has been following what is expected by the three coastal countries, but the Indonesian Navy Hydrographic and Oceanography Center or Pusat Hidrografi dan Oseanografi TNI AL (Pushidrosal) as a learning organization is required to continue to be able to improve its capabilities in the implementation of JHS. From the gap of research results obtained several activities that can be carried out by Pushidrosal to increase the effectiveness of JHS in SOMS namely by evaluating the implementation of Security Officer (SO) and Technical Officer (TO) as well as preparing SOP that can be used as a standard in the implementation of JHS activities
Analisis Konstanta Harmonik dan Pola Pasang Surut di Perairan Pulau Christmas pada Saat Terjadinya Blood Moon: Analysis of Harmonic Constants and Tidal Patterns in The Christmas Island Coastal Waters during The Blood Moon Nugraha Wigasmara; Widodo Setiyo Pranowo; Yulianto Yulianto; Jaenudin Jaenudin; Tasdik Mustika Alam; Nawanto Budi Sukoco; Dwi Jantarto; Kukuh Suryo Widodo
Jurnal Chart Datum Vol. 11 No. 2 (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.v12i1.401

Abstract

Fenomena pasang surut laut dipengaruhi oleh interaksi gravitasi antara bumi, bulan dan matahari, yang dapat mengalami perubahan selama peristiwa astronomis seperti Blood Moon. Penelitian ini bertujuan untuk menganalisis konstanta harmonik dan pola pasang surut di perairan Pulau Christmas selama fenomena Blood Moon pada September 2025, serta menilai pengaruhnya terhadap amplitudo pasut. Data pasang surut diperoleh dari tiga set pengamatan harian dengan periode berbeda, kemudian diolah menggunakan metode least square yaitu T-Tide MATLAB untuk memperoleh model harmonik yang representatif. Nilai Formzahl (F) digunakan untuk menentukan tipe pasang surut berdasarkan kontribusi komponen utama K1, O1, M2 dan S2. Hasil menunjukkan bahwa tipe pasang surut bersifat campuran, dengan nilai F berkisar antara 0,55-0,70 yang mengindikasikan campuran condong semi-diurnal. Komponen M2, S2 dan N2 mendominasi pola setengah harian, sedangkan K1 dan O1 mengalami peningkatan amplitudo selama periode Blood Moon. Secara keseluruhan, fenomena Blood Moon terbukti menyebabkan peningkatan amplitudo pasut sebesar 12–18% dibandingkan kondisi normal, akibat penguatan gaya gravitasi bulan dan matahari. Metode least square dengan T-Tide MATLAB dinilai efektif dalam mengidentifikasi variasi pasang surut serta memahami dinamika oseanografi di perairan Pulau Christmas.
Co-Authors Abdiyan Syaiful Jaenudin Jaenudin Janjan Rechar Kukuh Suryo Widodo Nawanto Budi Sukoco Nugraha Wigasmara Tasdik Mustika Alam Widodo Setiyo Pranowo Yulianto Yulianto