Vertical Crustal Movement along the Coast of South Africa
This study provides an in-depth evaluation of sea level rise (SLR) and its varied effects across the coastal regions of southern Africa. Utilizing data collected between 1993 and 2022, we analyze SLR patterns alongside land subsidence phenomena, based on observations from 10 strategically located ti...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-05-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://isprs-archives.copernicus.org/articles/XLVIII-M-6-2025/393/2025/isprs-archives-XLVIII-M-6-2025-393-2025.pdf |
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| author | F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi M. H. Erkoç R. P. Raj A. Pirti A. Bonaduce B. J. Abiodun B. J. Abiodun J. Stroeve J. Stroeve J. Stroeve |
| author_facet | F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi M. H. Erkoç R. P. Raj A. Pirti A. Bonaduce B. J. Abiodun B. J. Abiodun J. Stroeve J. Stroeve J. Stroeve |
| author_sort | F. E. Kemgang Ghomsi |
| collection | DOAJ |
| description | This study provides an in-depth evaluation of sea level rise (SLR) and its varied effects across the coastal regions of southern Africa. Utilizing data collected between 1993 and 2022, we analyze SLR patterns alongside land subsidence phenomena, based on observations from 10 strategically located tide gauges and X-TRACK satellite altimetry datasets. To ensure greater accuracy, the Coastal Altimetry Approach was adopted to refine nearshore measurements. Findings indicate that in areas such as Cape Town, sea-level rise rates reach around 6.3 mm/year, which is nearly twice the current global average of 3.3 mm/year. The interaction between rapid sea-level rise and subsidence rates surpassing 2.2 mm/year presents significant threats to coastal communities, critical infrastructure, and natural ecosystems. Moreover, the study highlights how seismic activity contributes to coastal dynamics, illustrating the role of earthquake-induced subsidence in magnifying the impacts of SLR. By incorporating seismic factors into the analysis, a more comprehensive understanding of the interplay between natural and human-induced drivers of sea-level variability is achieved. Additionally, the study examines the broader effects of SLR on Africa’s culturally and historically important coastal heritage sites, emphasizing the urgent need for proactive coastal management and climate adaptation efforts. |
| format | Article |
| id | doaj-art-006d16a37e2b4d2a9f809ad589c8c177 |
| institution | OA Journals |
| issn | 1682-1750 2194-9034 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj-art-006d16a37e2b4d2a9f809ad589c8c1772025-08-20T02:26:23ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342025-05-01XLVIII-M-6-202539339710.5194/isprs-archives-XLVIII-M-6-2025-393-2025Vertical Crustal Movement along the Coast of South AfricaF. E. Kemgang Ghomsi0F. E. Kemgang Ghomsi1F. E. Kemgang Ghomsi2M. H. Erkoç3R. P. Raj4A. Pirti5A. Bonaduce6B. J. Abiodun7B. J. Abiodun8J. Stroeve9J. Stroeve10J. Stroeve11Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB, CanadaNansen-Tutu Center for Marine Environmental Research, Department of Oceanography, University of Cape Town, South AfricaGeodesy Research Laboratory, National Institute of Cartography, P.O. Box 157, Yaoundé, CameroonDepartment of Geomatic Engineering, Yildiz Technical University, 34220, Istanbul, TürkiyeNansen Environmental and Remote Sensing Center and Bjerknes Center for Climate Research, Bergen, NorwayDepartment of Geomatic Engineering, Yildiz Technical University, 34220, Istanbul, TürkiyeNansen Environmental and Remote Sensing Center and Bjerknes Center for Climate Research, Bergen, NorwayNansen-Tutu Center for Marine Environmental Research, Department of Oceanography, University of Cape Town, South AfricaClimate System Analysis Group, Department of Environmental and Geographical Science, University of Cape Town, Cape Town, South AfricaCentre for Earth Observation Science, University of Manitoba, Winnipeg, MB, CanadaDepartment of Earth Sciences, University College London, London, UKNational Snow and Ice Data Center, Cooperative Institute for Research in Environmental Science, University of Colorado Boulder, Boulder, CO, USAThis study provides an in-depth evaluation of sea level rise (SLR) and its varied effects across the coastal regions of southern Africa. Utilizing data collected between 1993 and 2022, we analyze SLR patterns alongside land subsidence phenomena, based on observations from 10 strategically located tide gauges and X-TRACK satellite altimetry datasets. To ensure greater accuracy, the Coastal Altimetry Approach was adopted to refine nearshore measurements. Findings indicate that in areas such as Cape Town, sea-level rise rates reach around 6.3 mm/year, which is nearly twice the current global average of 3.3 mm/year. The interaction between rapid sea-level rise and subsidence rates surpassing 2.2 mm/year presents significant threats to coastal communities, critical infrastructure, and natural ecosystems. Moreover, the study highlights how seismic activity contributes to coastal dynamics, illustrating the role of earthquake-induced subsidence in magnifying the impacts of SLR. By incorporating seismic factors into the analysis, a more comprehensive understanding of the interplay between natural and human-induced drivers of sea-level variability is achieved. Additionally, the study examines the broader effects of SLR on Africa’s culturally and historically important coastal heritage sites, emphasizing the urgent need for proactive coastal management and climate adaptation efforts.https://isprs-archives.copernicus.org/articles/XLVIII-M-6-2025/393/2025/isprs-archives-XLVIII-M-6-2025-393-2025.pdf |
| spellingShingle | F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi F. E. Kemgang Ghomsi M. H. Erkoç R. P. Raj A. Pirti A. Bonaduce B. J. Abiodun B. J. Abiodun J. Stroeve J. Stroeve J. Stroeve Vertical Crustal Movement along the Coast of South Africa The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | Vertical Crustal Movement along the Coast of South Africa |
| title_full | Vertical Crustal Movement along the Coast of South Africa |
| title_fullStr | Vertical Crustal Movement along the Coast of South Africa |
| title_full_unstemmed | Vertical Crustal Movement along the Coast of South Africa |
| title_short | Vertical Crustal Movement along the Coast of South Africa |
| title_sort | vertical crustal movement along the coast of south africa |
| url | https://isprs-archives.copernicus.org/articles/XLVIII-M-6-2025/393/2025/isprs-archives-XLVIII-M-6-2025-393-2025.pdf |
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