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Journal : JURNAL ENGGANO

Variasi Musiman Sea Level Anomaly di Wilayah Perairan Indonesia Haryo, Julis Dani; Lizalidiawati, Lizalidiawati; Irkhos, Irkhos; Suhendra, Suhendra
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.200-207

Abstract

Indonesia's territory is located between two vast oceans, namely the Pacific and Indian Oceans as well as the two continents of Australia and the continent of Asia. As a result, Indonesia's regional climate is directly influenced by these geographical conditions. As is known, Indonesia experiences the Northwest Monsoon and Southeast Monsoon. The seasonal variations that occur include part of the aim of this research, namely to identify seasonal variations in sea surface anomalies (SLA) in three regions of Indonesia representing western, central and eastern waters using altimetry satellite image data. The coordinates of these three areas, namely, represent parts of the West Sumatra Sea (1°S – 3°S, 95°E – 100°E), Makassar Strait (5°S- 8°S, 119°E- 25°E), and the Banda Sea (5°S – 8°S, 125°E – 109°E). The data used for 30 years (1993-2022) is in the form of monthly average SLA data and processed using Panoply software to display the SLA distribution in each area as well as the SLA Time Series in the three regions. The research results show that the highest sea level rise occurred in area A (Western waters of Sumatra) with an SLA of 1.4 m with a rate of increase ranging from 0.5-1.4 m/year. In area B (Banda Sea), the SLA obtained is 1.2 m with an increase rate ranging from 0.7-1.2 m/year. Meanwhile in Area C (Makassar Strait) it is 1.3 m with an increase rate ranging from 0.7-1.3 m/year. Keywords: Sea Surfalce Height, Season variation, west, east, and middle region.
Variasi Musiman Tinggi Gelombang Laut di Perairan Pulau Enggano Provinsi Bengkulu Chinci, Jeniu; Lizalidiawati, Lizalidiawati; Suhendra, Suhendra; Anjasman, Anjasman
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.233-246

Abstract

Enggano Island is one of Indonesia's outermost islands located in the waters west of Sumatra. Enggano Island is directly adjacent to the vast and deep Indian Ocean so that the waters are very dynamic. One of them is known that the sea waves in these waters are very volatile. This study aims to find out the seasonal variation of sea wave height in the waters of Enggano Island, Bengkulu Province. This study uses primary data in the form of sea wave height measured at Kaana Beach and secondary data for 3 years (2021-2023) in the form of monthly average wind direction and speed, temperature and density data obtained from https://data.marine. copernicus.eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_PHY_001_024, sea wave height data obtained from https://data.marine.copernicus. eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_WAV_001_027. Data processing uses Python Anaconda 3 software for 2D display and Microsoft Excel for time series display. The methods used in this study are descriptive and quantitative methods. The results of the study show that the sea wave height in the waters of Enggano Island varies seasonally, it can be seen that the maximum sea wave height occurs in the eastern season in August with a value of 1.5-3 m with a wind direction and speed of 5-6 m/s and 7 m/s in the southern area of the island, while the minimum wave height occurs in the western season in December with a value of 1-2 m with a wind direction and speed of 1-2 m/s blowing towards the North and West of the island. Keywords : Enggano Island, seasonal variation, high sea waves, wind speed