Imaging Subsurface Structures at Fast Eroding Coastal Areas in Northern Bengkulu Using 2D Seismic MASW Method

Lubis, Ashar Muda; Samdara, Rida; Angraini, Lita; Ahmed, Zia; Reeve, Dominic E.

doi:10.1007/s41748-022-00301-5

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Keberadaan arus sejajar pantai (longshore current) dapat mengikis tebing-tebing di pinggir pantai dan mengangkut partikel sedimen sehingga menyebabkan terjadinya abrasi (Rostika et al, 2016). Daerah Pantai Pasar Palik sangat rentan terhadap abrasi dikarenakan stuktur tebing pada wilayah pantai yang sangat rapuh, sehingga mudah untuk mengalami abrasi dan erosi pantai (Lubis, 2020). Informasi arus sejajar pantai (longshore current) merupakan data yang sangat penting dalam memahami proses sedimentasi maupun abrasi pada suatu daerah.…”

Section: Pendahuluanunclassified

Studi Arus Sejajar Pantai dan Variasi Arus Laut Terhadap Kedalaman di Daerah Perairan Pantai Pasar Palik, Bengkulu Utara

Lubis

Lestari

Saputra

et al. 2022

Jurnal Kelautan Nasional

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Kajian arus sejajar pantai serta variasi arus kedalaman telah dilakukan di wilayah pesisir Pantai Pasir Palik dimana daerah ini merupakan salah satu wilayah pesisir yang paling rawan terhadap abrasi pantai di Provinsi Bengkulu Utara. Pengumpulan data arus laut beserta arahnya pada tiga lokasi berbeda dilakukan pada 6 - 8 November 2018 dengan menggunakan peralatan RCM Seaguard Aanderaa. Untuk mengetahui keberadaan arus sejajar pantai, data arus pada dua lokasi dianalisis dengan current rose. Data arus dari lokasi ketiga juga telah dianalisis untuk mempelajari variabilitas arus terhadap kedalaman. Hasil penelitian menunjukkan bahwa kecepatan arus rata-rata pada lokasi 1 adalah 7,1 cm/s, dan lokasi 2 adalah 12,4 cm/s. Arah arus di lokasi 1 dan lokasi 2 dominan ke arah tenggara dan selatan-tenggara. Selain itu, variasi arus terhadap kedalaman di daerah pesisir Pantai Pasir Palik telah diamati baik besaran maupun arahnya dengan kecepatan arus rata-rata setiap kedalaman berkisar antara 12,55-44,35 cm/s. Arah dominan arus laut yang teramati sejajar dengan garis pantai, menunjukkan keberadaan arus sejajar pantai di daerah Pantai Pasar Palik, Lais, Bengkulu Utara. Fenomena ini mungkin berhubungan dengan peristiwa abrasi pantai di sepanjang pantai karena arus sejajar pantai dapat menyebabkan erosi dan mengalirkan sedimen ke arah tenggara dan selatan-tenggara menuju Kota Bengkulu.

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Section: Pendahuluanunclassified

Studi Arus Sejajar Pantai dan Variasi Arus Laut Terhadap Kedalaman di Daerah Perairan Pantai Pasar Palik, Bengkulu Utara

Lubis

Lestari

Saputra

et al. 2022

Jurnal Kelautan Nasional

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“…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].…”

Section: Introductionmentioning

confidence: 99%

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

Irmawan,

Imaaduddiin,

Alam

et al. 2024

Applied Sciences

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Pulau Baai Port, located strategically in the Indian Ocean and considered a vital maritime hub in Indonesia, grapples with persistent challenges related to abrasion and sedimentation, which negatively impact its maritime infrastructure. One of the affected components is the exposed gas pipeline installation along the port’s coastline. The sedimentation rate along Pulau Baai’s coastline is alarming, ranging from 600,000 to 800,000 m3/year, resulting in coastal abrasion at a rate of up to 20 m/year. This study focuses on three scenarios using MIKE 21, including a baseline without alternatives, shore protection alternatives, and jetty protection alternatives. A comprehensive dataset, incorporating bathymetric maps, wave patterns, current data, and sediment characteristics, supports the analysis of coastal dynamics, emphasizing the urgency for intervention. The research introduces the novelty of analyzing coastal abrasion through the exposure of underground pipelines, establishing a relationship between impacting factors such as wave height, tides, sedimentation, and coastal abrasion. Mitigation alternatives, particularly alternative model-2 with jetty protection, are recommended based on a thorough evaluation of the model performance and actual measurements. The results show that Pulau Baai’s sediment, primarily sandy, experiences substantial abrasion and coastline changes, notably in alternatives-2 and -3. The study anticipates potential sedimentation in certain sections of the subsea exposed pipelines in the absence of shore protection. The outcomes of this research provide a foundational guide for informed decision making and strategies to ensure the sustainable functionality of maritime infrastructure in Pulau Baai and similar coastal regions.

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Application of seismic refraction and MASW geophysical techniques to characterize the subsoil structure under damaged buildings in Qeft city, Upper Egypt

Abbas,

Abdelgowad

2024

Model. Earth Syst. Environ.

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Imaging Subsurface Structures at Fast Eroding Coastal Areas in Northern Bengkulu Using 2D Seismic MASW Method

Cited by 3 publications

References 26 publications

Studi Arus Sejajar Pantai dan Variasi Arus Laut Terhadap Kedalaman di Daerah Perairan Pantai Pasar Palik, Bengkulu Utara

Studi Arus Sejajar Pantai dan Variasi Arus Laut Terhadap Kedalaman di Daerah Perairan Pantai Pasar Palik, Bengkulu Utara

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

Application of seismic refraction and MASW geophysical techniques to characterize the subsoil structure under damaged buildings in Qeft city, Upper Egypt

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