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All Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Jurnal Riset & Teknologi Terapan Kemaritiman
Achmad Yasir Baeda
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Mechanical Engineering Public Health Transportation

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Journal : Jurnal Riset

 1 
Study of the Madden-Julian Oscillation (MJO) Scheme in South Sulawesi Province Tri Utari; Achmad Yasir Baeda; Chairul Paotonan
Jurnal Riset & Teknologi Terapan Kemaritiman Vol. 1 No. 2 (2022)
Publisher : Departemen Teknik Sistem Perkapalan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jrt2k.122022.05

Abstract

The Madden-Julian Oscillation (MJO) is a phenomenon of the propagation of oscillatory waves that move eastward to the earth with a repetition time of 30-90 days and the impact is very strongly felt in low-latitude areas, near the equator and occurs for the first time in the Indian Ocean and moves eastward between 100 latitude and 100 latitude. MJO is closely related to an increase in excessive rainfall during the rainy season and even the dry season in Indonesia. This research was conducted with the aim of analyzing the effect of the rainfall parameter on MJO and the scheme for the emergence of MJO in South Sulawesi Province, through empirical methods with statistical calculations, based on MJO data in the form of MJO amplitude index values and daily rainfall data for South Sulawesi Province. MJO data was taken from BoM while rainfall data was obtained from NASA TRMM 3B42RT with a time range from 2010 to 2019. Both data were filtered for MJO focusing on phases 2 and 3 (Indian Ocean) and 4 and 5 (Indonesian Maritime Continent) and then analyzed the correlation with sensitivity analysis by simple linear regression, and data plotted on a graph for each year. South Sulawesi Province is one in Indonesia which is located in the southern part of Sulawesi Island. Astronomically, South Sulawesi is located at 0°12' - 8° South Latitude and 116°48' - 122°36' East Longitude. Its geographical location is in the middle of the Indonesian Maritime Continent (BMI), there is a strong positive dominant correlation effect in the province of South Sulawesi with an r of 0.712. This means that the rainfall parameter in South Sulawesi Province can have a strengthening influence on the MJO. Based on the graphical scheme of the emergence of MJO in the province of South Sulawesi, there was an increase in rainfall during phases 4 and 5 which occurred for eight days. In addition, the influence of ENSO and IOD can strengthen MJO or even trigger MJO and still cause excessive rainfall which is influenced by these global factors, besides that local factors also affect rainfall such as monsoon winds and topographical conditions that are different in each province. So not all of the rainfall that occurs is caused by MJO activity.
Skema Mitigasi Tsunami Mendatang di Pelabuhan Garongkong, Barru, Sulawesi Selatan Didit Fahrudin Muhamad Saleh; Achmad Yasir Baeda; Sabaruddin Rahman
Jurnal Riset & Teknologi Terapan Kemaritiman Vol. 1 No. 2 (2022)
Publisher : Departemen Teknik Sistem Perkapalan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jrt2k.122022.06

Abstract

Indonesia merupakan negara yang sangat rawan dilanda bencana gempa yang dapat diikuti oleh tsunami. Bencana tsunami merupakan fenomena alam ataupun bencana alam yang sama sekali tidak dapat diprediksi kapan tepatnya akan terjadi. Oleh karenanya karakteristik bencana tersebut tidak dapat diprediksi maka satu – satunya pilihan yang logis dan rasional adalah mengupayakan agar dampak bencana tersebut bisa diminimalisir. Pelabuhan Garongkong merupakan pelabuhan peengumpul. Posisinya berada bersebelahan dengan pelabuhan penyeberangan Andi Matalata, di pantai Garongkong. Kegiatan yang dilakukan di pelabuhan garongkong didominasi oleh kegiatan bongkar muat curah kering non pangan berupa batubara, klinker, sirtu gunung dan gipsum. Yang berarti pelabuhan garongkong memiliki peran penting untuk memajukan perekonomian wilayah Barru, Sulawesi Selatan. Upaya sistem peringatan dini dengan membuat skema mitigasi di suatu wilayah dengan berbagai perencanaan rekayasa pembangkit gempa bumi yang bermagnitude 5,1 - 5,6 SR dengan mekanisme bangkitan Dip-Slip-Strike tertentu. Kajian dilakukan dengan dua tahap. Dengan kajian tahap awal pengolahan data parameter gempa bumi pembangkit, yang dilanjutkan dengan pemodelan numerik menggunakan SiTProS, yang akan menghasilkan sebaran tinggi tsunami dan waktu tempuhnya. Kajian kedua ialah skema mitigasi yang dapat diterapkan di pelabuhan garongkong. Penelitian ini menghasilkan pemodelan tsunami dengan tinggi 3,22 m dengan jarak tempuh selama 34,78 menit, dan run-up dapat mencapai 11.26 m. Hasil simulasi ini kemudian dijadikan acuan untuk menentukan skema mitigasi tsunami mendatang yang sesuai untuk pelabuhan garongkong. Skema mitigasi terebut berupa sistem peringatan dini, mitigasi struktural (berupa pembuatan greenbelt dan sistem perlindungan buatan), mitigasi non struktural (berupa pembuatan peta zona rawan bencana dan melakukan sosialisasi dan tsunami drill), mitigasi menggunakan metode evakuasi dan mitigasi vertikal yang merupakan pilihan terbaik untuk mitigasi bencana tsunami mendatang di Pelabuhan Garongkong.
Co-Authors Ashury - Chaerul Paotonan Chairul Paotonan Daeng Paroka Daeng Parokka Didit Fahrudin Muhamad Saleh F.M. Assidiq Firman Husain Hasdinar - Hasdinar Umar Hendra Hendra Juswan - Juswan Sade Muhammad Zubair M Alie Muhammad Zubair MA Rita Muliyati Sabaruddin Rachman Sabaruddin Rahman Sabaruddin Rahmanr Syerly Klara Taufiqur Rachman Taufiqur Rachman TRI UTARI