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All Journal BULETIN OSEANOGRAFI MARINA
Mustaqim, Ikhsan
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Earth & Planetary Sciences

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Analisis Dampak ENSO terhadap Presipitasi dan Evaporasi di Selat Makassar Alamsyah, M. Zanugera; Rizqullah, Fairus Jamil; Sulhana, Baiq Lista Azkia; Maulana, Refaldi Rizky; Cahyaningtyas, Annisa Dianti; Rahmalia, Fahri; Mustaqim, Ikhsan; Fadhillah, Shafa Nur; Baskara, Ganesha Lagas; Kunarso, Kunarso
Buletin Oseanografi Marina Vol 14, No 1 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i1.60285

Abstract

Penelitian ini menganalisis pengaruh ENSO terhadap presipitasi dan evaporasi di Selat Makassar. Data yang digunakan berupa data presipitasi dan evaporasi diperoleh dari The European Centre for Medium-Range Weather Forecast (ECMWF) serta data ONI (Oceanic Niño Index) dari National Oceanic and Atmospheric Administration (NOAA) selama 15 tahun dari 2008 - 2022. Analisis korelasi pearson digunakan untuk mengukur kekuatan dan arah hubungan linier variabel ENSO terhadap presipitasi dan evaporasi. Hasil analisis menunjukkan bahwa secara klimatologis dan spasial, presipitasi  maupun evaporasi mengalami maksimum minimum yang sama. Pengaruh ENSO sendiri terhadap presipitasi dan evaporasi di Selat Makassar secara umum menunjukkan pola korelasi yang kompleks dan bervariasi sepanjang  tahun, dengan perbedaan yang signifikan di tiga wilayah, yaitu Selatan, Tengah, dan Utara. Keadaan presipitasi dan evaporasi di Selat Makassar selama 15 tahun terakhir tidak secara signifikan dipengaruhi oleh El Niño dan La Niña. Hal tersebut diduga karena letak Selat Makassar sendiri berada di wilayah yang  dipengaruhi oleh beberapa fenomena atmosfer global lainnya seperti munsonal, MJO, dan IOD.
Spatio-Temporal Characteristic Analysis of Marine Heatwaves in the Savu Sea (1982-2021) Attaqwa, Rizal; Respati, Deodato Naresvara Rayi; Juviani, Dian; Susilodewi, Sinta Dwis; Saragih, Laurentia Alexandra; Mustaqim, Ikhsan; Wirasatriya, Anindya; Ismunarti, Dwi Haryo
Buletin Oseanografi Marina Vol 14, No 2 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i2.70846

Abstract

Atmospheric interactions have led to a consistent rise in ocean temperatures in the Indonesian seas, exacerbated by the emergence of marine heatwaves (MHWs) that extend over thousands of kilometers. MHWs are defined as temperature anomalies above the 90th percentile of the sea surface temperature (SST) baseline for at least five consecutive days. The Savu Sea, influenced by the Indonesian throughflow that transports warm water from the Pacific to the Indian Ocean, experiences significant temperature anomalies. This study employs OSTIA L4 Marine Copernicus Global Ocean Physics Reanalysis SST data from 1982 to 2021 to analyze the frequency, duration, and intensity of MHW events in this region. Using Hobday's hierarchical approach, the study finds that MHWs in the Savu Sea lasted up to 1,170 days over 40 years, with 117 recorded events. The worst MHW event occurred in 2016, lasting 194 days with a maximum cumulative intensity of 2.0°C/year, particularly affecting the northern Savu Sea. These heatwaves significantly impact marine ecosystems, leading to coral bleaching that affects about 50% of coral colonies and threatens marine biodiversity and fisheries recovery.
Co-Authors Alamsyah, M. Zanugera Anindya Wirasatriya Attaqwa, Rizal Baskara, Ganesha Lagas Cahyaningtyas, Annisa Dianti Dwi Haryo Ismunarti Fadhillah, Shafa Nur Juviani, Dian Kunarso Kunarso Maulana, Refaldi Rizky Rahmalia, Fahri Respati, Deodato Naresvara Rayi Rizqullah, Fairus Jamil Saragih, Laurentia Alexandra Sulhana, Baiq Lista Azkia Susilodewi, Sinta Dwis