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Mapping Flood-Prone Areas Using GIS Through as Geo-Artificial Intelligence (Geo-Ai) Approach in Bengkulu City Apriana, Agnes; Al Ansory, Andre Rahmat; Agustina, Tari; Amalia, Isra; Refrizon, Refrizon
Journal of Technomaterial Physics Vol. 6 No. 1 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i1.16006

Abstract

Bengkulu City is an area prone to flooding due to its proximity to the river estuary. Flooding in Bengkulu City usually occurs during the rainy season, when high rainfall and overflowing rivers can cause inundation in several areas around the city. This research aims to identify flood-prone areas in Bengkulu City through a Geographic Artificial Intelligence (Geo-AI) approach. Geo-AI is an artificial intelligent machine with geospatial data, including satellite images and weather data, whose data analysis is more accurate and efficient in identifying flood-prone areas. Geographic Information System (GIS) can present objects of flood-prone areas from the real world in digital form. Through Google Earth Engine (GEE), satellite imagery data and other geospatial data are processed and analyzed using artificial intelligence algorithms to identify flood patterns and frequently flooded areas. The final result of this research is a map of flood-prone areas in Bengkulu City. On the map, it can be concluded that the red-colored areas including Rawa Makmur, Tanjung Agung, Bentiring, Kebun Tebeng, Penurunan, Sukarami, Pekan Sabtu, and Air Sebakul are areas that are often flooded so that these areas can be confirmed as flood-prone.
Pengaruh ENSO Dan IOD Terhadap Suhu Permukaan Laut di Perairan Pulau Enggano Amalia, Isra; Lubis, Ashar Muda; Cahyarini, Sri Yudawati
Jurnal Kelautan Tropis Vol 28, No 1 (2025): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v28i1.25759

Abstract

Enggano Island, located in the Indonesia Ocean, about 178 km away south-west from Bengkulu city, experiences Sea Surface Temperature (SST) variability that may be influenced by global climate phenomena such as the El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). This study aims to analyze the influence of ENSO and IOD on SST surrounding Enggano Island using monthly and annual data during the period 1993-2023. The research was carried out descriptively-analytically including temporal patterns of SPL, seasonal anomalies, and correlations between SPL and the NINO 3.4 index and Dipole Mode Index (DMI). The results showed a significant relationship between ENSO and SPL, where El Niño causes an increasing in SST, while La Niña decreases it with a moderate positive correlation (r = 0.5, p = 0.0042). IOD also affects SST with a weaker positive correlation (r = 0.352, p = 0.0523), where positive phases of IOD could increase SST at the region. Seasonally, the highest SST yearly occurred in March-May and the lowest in June-August. In addition, an increasing SST of 0.5°C can be found over the past 31 years, which may contribute to sea level rise with trend of 4.6-4.7 mm/year, higher than the global average. This research emphasizes the importance of understanding the complex interactions between ENSO, IOD and SPL, which impact oceanographic dynamics and coastal ecosystem management.  Pulau Enggano yang terletak di Samudera Indonesia, sekitar 178 km arah barat daya dari kota Bengkulu, mengalami variabilitas Suhu Permukaan Laut (SPL) yang dapat dipengaruhi oleh fenomena iklim global seperti El Nino Southern Oscillation (ENSO) dan Indian Ocean Dipole (IOD). Penelitian ini bertujuan untuk menganalisis pengaruh ENSO dan IOD terhadap SPL di sekitar Pulau Enggano dengan menggunakan data bulanan dan tahunan selama periode 1993-2023. Penelitian dilakukan secara deskriptif-analitik meliputi pola temporal SPL, anomali musiman, dan korelasi antara SPL dengan indeks NINO 3.4 dan Dipole Mode Index (DMI). Hasil penelitian menunjukkan adanya hubungan yang signifikan antara ENSO dan SPL, dimana El Nino menyebabkan peningkatan SST, sedangkan La Nina menurunkannya dengan korelasi positif sedang (r = 0.5, p = 0.0042). IOD juga mempengaruhi SST dengan korelasi positif yang lebih lemah (r = 0.352, p = 0.0523), di mana fase positif IOD dapat meningkatkan SST di wilayah tersebut. Secara musiman, SST tertinggi tahunan terjadi pada bulan Maret-Mei dan terendah pada bulan Juni-Agustus. Selain itu, peningkatan SST sebesar 0,5°C dapat ditemukan selama 31 tahun terakhir, yang dapat berkontribusi pada kenaikan permukaan laut dengan tren 4,6-4,7 mm/tahun, lebih tinggi dari rata-rata global. Penelitian ini menekankan pentingnya memahami interaksi yang kompleks antara ENSO, IOD dan SPL, yang berdampak pada dinamika oseanografi dan pengelolaan ekosistem pesisir.
Kajian Perubahan Garis Pantai Kabupaten Bengkulu Utara dengan Interpretasi Citra Penginderaan Jauh dan Digital Shoreline System Septianingsih, Dwi; Amalia, Isra; Johan, Septi; Lidiawati, Liza
Jurnal Fisika Unand Vol 14 No 3 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.3.218-227.2025

Abstract

The coastal area of ​​North Bengkulu often experiences abrasion and accretion processes, considering its location directly facing the vast waters of the Indian Ocean. This phenomenon can have an impact on changes in the coastline in the area. This study aims to identify changes in the coastline over time by utilizing multi-sensor satellite imagery from USGS. The focus is to measure changes in the distance of coastal areas in North Bengkulu Regency. Changes in the coastline in this area are calculated statistically using the Digital Shoreline Analysis System (DSAS). The results of the average calculation of the distance of changes in the coastline from 2014 to 2023 in North Bengkulu Regency are influenced by quite large abrasion and accretion of -20.31 meters and 21.6 meters. The impact of accretion shows a higher value than abrasion due to the addition of land (sedimentation) in a number of river estuaries in North Bengkulu Regency. Changes in the coastline are influenced by the dynamics of seasonal winds and sea waves due to the East and West Monsoons, impacting coastal settlements, infrastructure, and ecosystems such as coral reefs and mangrove forests