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All Journal JURNAL ILMIAH PLATAX Jurnal Widya Climago
Azani, Audia Azizah
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Humanities Education Environmental Science Social Sciences Other

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Comparative Studies Of Residual Water Level In Manado And Melonguane Coastal Area During Tropical Cyclone In 2021 Azani, Audia Azizah; Djamaluddin, Rignolda; Bara, Robert A; Manu, Lusia; Dien, Heffry Veibert; Manembu, Indri Shelovita
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53167

Abstract

North Sulawesi Province, directly bordering the Pacific Ocean, is located in an area with the highest level of tropical cyclone (TC) activity in the world. As a result, the province is vulnerable to the impacts caused by cyclones, including storm surges. The increase in water levels due to this event has the potential to cause coastal flooding. Previous studies in Manado have identified that sea level rise can be detected through residual water level (RWL), making studying the characteristics of RWL in North Sulawesi important. This research focuses on Manado and Melonguane, allowing for a comparison of characteristics. The data used includes tropical cyclone data from the China Meteorological Administration (CMA) and tidal data from the Geospatial Information Agency. The Unified Tidal Analysis and Prediction (UTide) method is used to identify RWL. The analysis was carried out by using a t-test to compare data at the two locations. The results showed that RWL at those locations had significant differences with Melonguane having the higher value between them. Generally, the increase in RWL in Melonguane occurs shortly after the cyclone period, while the RWL in Manado maximum increases 86 hours after TC's first occurrence. Keywords: tropical cyclone; residual water level; UTide.
KAJIAN INDEKS STABILITAS ATMOSFER TERHADAP KEJADIAN HUJAN LEBAT DI KOTA BITUNG: (STUDI KASUS TAHUN 2020 - 2021) Kusumawardani, Niken; Azani, Audia Azizah
Jurnal Widya Climago Vol 4 No 1 (2022): Edukasi dan Literasi Informasi Geohidrometeorologi
Publisher : Pusdiklat BMKG

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Abstract

The stability index can be used by weather forecasters to predict heavy rain events. This paper examines the atmospheric stability index for the occurrence of heavy rain in Bitung City, North Sulawesi, during 2020-2021. Stability index data was obtained from the radiosonde of Sam Ratulangi Meteorological Station, Manado. The indexes studied are the Lifted Index (LI), Showalter Index (SI), K-Index (KI), CAPE, SWEAT, and Total-Totals Index (TT). The results show that heavy rain in Bitung occured when the SI, KI, SWEAT, and TT values are in the moderate category. Meanwhile, the LI and CAPE values are less representative in predicting the occurrence of heavy rain in Bitung City. Further research is needed on the relationship between the threshold value of the atmospheric stability index and the weather in Bitung City so that it can be used as a reference for weather prediction.
Co-Authors Dien, Heffry Veibert Indri Manembu Kusumawardani, Niken Manu, Lusia Rignolda Djamaluddin Robert A. Bara