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Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation
Thesis (MMil)--Stellenbosch University, 2025.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2025
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| _version_ | 1867613743116976128 |
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| access_status_str | Open Access |
| author | Matiwane, Lukhanyo Lesedi |
| author2 | Uys, R. L. |
| author_browse | Matiwane, Lukhanyo Lesedi Uys, R. L. |
| author_facet | Uys, R. L. Matiwane, Lukhanyo Lesedi |
| author_sort | Matiwane, Lukhanyo Lesedi |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MMil)--Stellenbosch University, 2025. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/134699 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:40:58.715Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/134699 Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation Matiwane, Lukhanyo Lesedi Uys, R. L. Le Roux, R. R. Stellenbosch University. Faculty of Military Science. School for Science and Technology. Ocean waves Hydrodynamics Sediment transport Harbors -- South Africa -- East London Mathematical models UCTD Thesis (MMil)--Stellenbosch University, 2025. Matiwane, L. L. 2025. Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/0a6859c7-4a55-400c-a4cd-53c8c6a6fd1e ENGLISH ABSTRACT: The only commercial river port in South Africa is the Port of East London, which faces sedimentation challenges that impede navigation and port operations. This study investigates the wave climate and the complex hydrodynamics influencing the sediment transport within the port by using the Simulating Waves Nearshore (SWAN) model. To achieve the study's objectives, the data from the South African Navy Hydrographic Office (SANHO) and in-situ measurements are integrated, along with wind and wave data from the CSIR Datawell Waverider Buoy for 2022. The bathymetric data is processed and gridded using ArcGIS. The configuration of the SWAN model uses the gridded bathymetry as the input, wave and wind data. The model simulates seasonal wave conditions, and the key findings reveal distinct seasonal patterns. Autumn and winter exhibited high significant wave heights of 3 m and 3.5 m, respectively, resulting in high wave energy and narrow directional spreading, promoting sediment resuspension and longshore transport, particularly at the port entrance. Summer and spring exhibited low significant wave heights of 2.2 m and 2.5 m, respectively, resulting in low wave energy and wide directional spreading, which promoted sediment deposition at the port entrance and nearshore areas. Four locations were analysed for energy spectra and directional spreading, highlighting areas prone to sediment accumulation and resuspension. A comparative analysis was conducted against the Port of Ngqura, a semi-sheltered open-sea port, to determine challenges and limitations. The SWAN model in East London presented challenges due to the confined geometry and riverine-influenced systems. East London required finer spatial resolution and river discharge and tidal data. The validation of the SWAN model in East London was based on the navigational chart SAN 1027, which showed a strong correlation but revealed discrepancies at the port entrance due to possible sedimentation in this area. The study addresses the knowledge gap and lays the groundwork in wave modelling for river ports by analysing wave dynamics, sediment resuspension, and deposition patterns to inform effective port management and dredging strategies. AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar nie. Masters 2025-12-24T07:22:32Z 2025-12-24T07:22:32Z 2025-12 Thesis https://scholar.sun.ac.za/handle/10019.1/134699 en_ZA Stellenbosch University 72 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Ocean waves Hydrodynamics Sediment transport Harbors -- South Africa -- East London Mathematical models UCTD Matiwane, Lukhanyo Lesedi Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title | Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title_full | Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title_fullStr | Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title_full_unstemmed | Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title_short | Modelling the wave climate at the Port of East London to understand the complex hydrology affecting sedimentation |
| title_sort | modelling the wave climate at the port of east london to understand the complex hydrology affecting sedimentation |
| topic | Ocean waves Hydrodynamics Sediment transport Harbors -- South Africa -- East London Mathematical models UCTD |
| url | https://scholar.sun.ac.za/handle/10019.1/134699 |
| work_keys_str_mv | AT matiwanelukhanyolesedi modellingthewaveclimateattheportofeastlondontounderstandthecomplexhydrologyaffectingsedimentation |