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All Journal Jurnal Meteorologi Klimatologi dan Geofisika
Muhammad Fikry Syach
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Astronomy Earth & Planetary Sciences Environmental Science Mathematics Physics

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KAJIAN PENGARUH SIKLON TROPIS MANGGA TERHADAP CURAH HUJAN, TRANSPOR EKMAN, VISKOSITAS EDDY DAN TINGGI GELOMBANG DI PERAIRAN SELATAN JAWA PADA 20-25 MEI 2020 Satria Ginanjar; Muhammad Fikry Syach; Siti Wulandari
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.193

Abstract

Tropical cyclone of Mangga formed on May, 20th – 25th 2020, located in southwest of Bengkulu, pricesly at coordinates of 9,8oS and 93,0oE over Indian Ocean Waters. This Cyclone does not cross Indonesia however can affect oceanographic parameters in Indonesia, notably on Southern Waters of Java . This study aims to determine changes in oceanographic parameters in the form of Ekman mass and volume transport, viscosity of Eddy and wave height during the Mangga Cyclone. The data used in reanalysis data extraction of surface wind direction and magnitude into wave height data, while Ekman transport and Eddy viscosity use combined surface wind data obtained from ERA5, also processed using IDL programming. The velocity of Mangga tropical cyclone became a tropical depression on May 19th 2020 was 14.07 m/s until its peak on May 20th, 2020 has maximum velocity at 14.07 m/s or 27.36 knots which has an impact on increasing Ekman transport velocity was 38,2 m2/s; Eddy’s mean viscosity was 23,36 m2/s; Rainfall mean was 165mm/day; and maximum wave height was 4.01 meters. These conditions also effect other oceanographic parameters and characteristic such as transformation of Eddy current patterns, upwelling events, and cooling sea surface temperatures (in combination with cloud cover effects) that occur during Mangga cyclone in the southern waters of Java.
PEMETAAN PERKIRAAN POTENSI GELOMBANG LAUT SEBAGAI PEMBANGKIT LISTRIK TENAGA GELOMBANG LAUT DENGAN SISTEM PELAMIS DI PERAIRAN NIAS Muhammad Fikry Syach; Muhammad Farras Ayasy; Novia Safinatunnajah
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.198

Abstract

The need for electricity using alternative energy is very necessary to replace fossil energy, notably coal power plant sector which is very polluting the environment, the development of alternative energy also supports the realization of sustainable development goals (SDGs) in providing clean and renewable energy. Indonesia has great potential in developing ocean wave energy of around 41 gigawatts, so that it can help to fullfil national electricity consumption. The purpose of this study is to determine the ocean wave potential using conversion of power density of Pelamis (Sea Dragon) electricity analysis in Nias Waters, North Sumatera. This study uses quantitive-case method. This study uses surface wind data from ERA5 and ASCAT in 2019; by processing wind data to generate wind roses using WRPlot software, SMB (Sverdrup-Munk-Bretschneider) method to determine wave forecasting and wave equation using IDL programming, as well as the wave energy density equation using mass-Damper-system electrical energy conversion in the Pelamis module. Based on the study, the results of significant wave height and periode are obtained 0.63 meters and 4.05 seconds, with the conversion angle between the Pelamis arms module is 46,85o using Damper spring between 1.00-1.73 meters, with average of ocean wave density is 82,01 kW/m2; maximum kW/m2; minimum 17,32 kW/m2.
Co-Authors Muhammad Farras Ayasy Novia Safinatunnajah Satria Ginanjar Siti Wulandari