Abrasi dan Sedimentasi Pantai di Kawasan Pesisir Kota Bengkulu

Abstract

<strong>Coastal Abrasion and Sedimentation Kota Bengkulu Coast Area.</strong> Coastal environment of Kota Bengkulu is typified by strong wave energy, which caused coastal abrasion and sedimentation. This paper intends to discuss the abrasion and sedimentation processes in the coastal area of Kota Bengkulu. Bathymetry survey has been employed to measured the depth of ocean floor, together with turbidity of water, and tide and wave currents. The erosion in the coastal Kota Bengkulu occurred as a result of the strong waves which hit coastal cliffs intensively and high rainfall conditions that weaken the bond-forming material at the foot of the cliff coast. On the other hand, sedimentation occured due to the supply of sediment from the collapsed material of the coastal cliffs that are transported by the current in the Coastal Waters of Kota Bengkulu together with Jenggalu River and Air Bengkulu River.

Hydrodynamic Analysis-Based Modeling of Coastal Abrasion Prevention (Case Study: Pulau Baai Port, Bengkulu)

“…The research was conducted along the shoreline of Pulau Baai Port with coordinates ranging from a longitude of 102 • 16 ′ 00 ′′ to 102 • 18 ′ 30 ′′ east and latitude of 03 • 53 ′ 00 ′′ to 03 • 55 ′ 30 ′′ south, covering an outer water area of 2183.47 ha and an inner water area of 1000 ha [2,3,13]. As can be observed in Figure 2, it is evident that there has been a noticeable change in the coastline conditions at the study location from 2019 to 2022 (Figure 2A-D).…”

“…As one of the crucial ports facilitating the maritime transportation of commodities in the Bengkulu Province, Indonesia, Pulau Baai Port is situated approximately 20 km from the city center of South Bengkulu [1][2][3]. This port also plays an instrumental role in supporting oil and gas explorations, with vital pipeline installations tracing its shoreline [4].…”

“…The sedimentation rate along the coastline of Pulau Baai port reaches staggering proportions, with estimates ranging from 600,000 to 800,000 m 3 /year, while coastal abrasion steadily encroaches at a rate of up to 20 m/year [3,[13][14][15][16]. The most severe siltation occurs at the port's entrance channel, and if left unchecked, it could have severe consequences, including disruptions to economic sectors and the potential exposure of existing pipeline installations along its shoreline [17][18][19].…”

Aksi Bersih Pantai dan Laut Politeknik Pelayaran Sorong

“…Tidak hanya Pemerintah Indonesia yang harus terlibat, tetapi juga masyarakat dan kelompok lain harus terlibat. Aksi bersih-bersih Pantai Teluk di Kecamatan Labuan, Kabupaten Pandeglang, Provinsi Banten, yang dilakukan oleh Pandawara Group dan ratusan masyarakat pada hari Senin, 22 Mei 2023, merupakan salah satu contoh aksi bersama masyarakat membersihkan pantai [11].…”

Pengurangan Risiko Abrasi Pantai Oleh Gelombang Ekstrim Berbasis Partisipasi Masyarakat Di Desa Waworaha Soropia, Kabupaten Konawe, Sulawesi Tenggara

“…Aktivitas tersebut berkorelasi dengan peningkatan kebutuhan akan lahan dan prasarana yang menimbulkan masalah baru seperti erosi pantai berupa mundurnya garis pantai akibat endapan pantai dan menyebabkan majunya garis pantai. Majunya garis pantai dikatakan menguntungkan karena timbulnya lahan baru, sementara di sisi lain menyebabkan masalah drainase perkotaan di daerah pesisir pantai [4]. Permasalahan abrasi pantai di beberapa wilayah di Indonesia menjadi fenomena alam yang umum terjadi.…”