Sea level rise and coastal flooding risks in the Gulf of Guinea DOI Creative Commons
Franck Eitel Kemgang Ghomsi, Björn Nyberg, Roshin P. Raj

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Ноя. 28, 2024

Abstract The Gulf of Guinea (GoG) is highly vulnerable to sea level rise, with projections indicating a significant increase in permanently inundated land by 2100, ranging from 1,458.1 4,331.7 km 2 . This study evaluates the severity potential coastal inundation GoG comparing rise eight reliable CMIP6 models historical surface height (SSH) data 1993 2015 and current onshore topography. Eight model simulations were selected based on their accuracy reproducing variability Tropical Atlantic GoG, consistency reflecting one-month connection lag between equatorial-driven waves Kelvin Coastal Trapped Waves (CTWs) along critical for predicting regional ocean dynamics. Our findings indicate that this will remain consistent over time. Under high-emission scenarios, up 95% areas could be inundated, potentially displacing million people posing socio-economic shock, given region’s low GDP heavy reliance fisheries. loss cultural heritage livelihoods further compounds challenges. These emphasize urgent need targeted adaptation strategies robust early warning systems, line UN’s Sustainable Development Goals (SDGs), particularly SDG 13 (Climate Action) 14 (Life Below Water). offers precise regionally relevant assessment future risks, providing foundation informed policy interventions mitigate impacts climate change protect communities GoG.

Язык: Английский

Impact of marine heatwaves and cold spells on coral reef ecosystem in a tropical region: a case study of Lombok Waters, Indonesia DOI
Gandhi Napitupulu,

Achmad Nagi,

Susanna Nurdjaman

и другие.

Marine Systems & Ocean Technology, Год журнала: 2025, Номер 20(1)

Опубликована: Янв. 27, 2025

Язык: Английский

Процитировано

1
Sea level trends along the South African coast from 1993 to 2022 using XTRACK altimetry, tide gauges, and GNSS measurements DOI Creative Commons
Franck Eitel Kemgang Ghomsi, Muharrem Hilmi Erkoç, Roshin P. Raj

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 10, 2025

This study presents a comprehensive investigation of the complex dynamics sea-level rise (SLR) and its multiple impacts on coastal regions in southern Africa. We meticulously analyse trends patterns SLR subsidence rates using wealth data from 1993 to 2022, including observations network 10 reliable tide gauges XTRACK processed Coastal Altimetry Approach minimise shortcomings conventional altimetry data. Our results show that sea level areas South Africa, such as Cape Town (6.3 mm/yr), is almost double global average (3.3 mm/yr). alarming rate SLR, coupled with more than 2.2 mm/yr, poses significant immediate threat communities, infrastructure ecosystems. research also highlights impact seismic activity dynamics, further exacerbating challenges posed by SLR. By incorporating influence earthquakes subsidence, we provide nuanced understanding interplay natural anthropogenic factors contributing region. In addition, our sheds light wider implications for some Africa's most iconic culturally heritage sites, highlighting urgent need proactive management adaptation strategies.

Язык: Английский

Процитировано

0
Identification of the structural configuration of the Equatorial Atlantic Ridge from satellite-derived gravity data using the enhancement techniques DOI
Luan Thanh Pham, Franck Eitel Kemgang Ghomsi, Ahmed M. Eldosouky

и другие.

Advances in Space Research, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Development of UAV-based LiDAR and multispectral measurement techniques for monitoring sediment intrusion in coastal wetlands DOI Creative Commons
Paweł Tysiąc, Damian Moskalewicz, Łukasz Janowski

и другие.

Measurement, Год журнала: 2025, Номер unknown, С. 117459 - 117459

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Influence Modeling of muddy phosphate mining waste discharge on hydrodynamics in the Beninese-Togolese coastal waters and transport of waste phases DOI

Daouda SAMA,

M’bènibé GMAKOUBA,

Pamane KPIAGOU

и другие.

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Abstract The Kpémé plant (Togo) discharges phosphate-rich muddy waste laden with heavy metals (Cr, Cd, Hg, etc.) into the coastal ocean. These discharges, composed of apatite-rich phases and light clay-rich phases, disrupt hydrodynamics, degrade water quality, contaminate ecosystems, threaten human health via bioaccumulation. This study employs Delft3D suite (FLOW, WAVE) to model transport (density, particle size) their impacts along Beninese-Togolese coastline. Simulations integrate bathymetric data (GEBCO), meteorological inputs (ERA5), in situ measurements, span two key seasons (May August 2024) predict dispersion, sedimentation, ecological risks. assessed extended revealed distinct hydrological contrasts coast. Current velocities wind-driven wave heights were higher during cold season (depth-averaged up 0.272 m/s; significant 0.70 m), promoting enhanced dispersion toward deeper waters. Sediment increased season, average depth flow rates rising by + 76.77 m³/s compared warm season. Heavy accumulated nearshore (0.97–305.90 m³/s), particularly Togolese zones, while migrated oceanic depths (0.61–39.28 forming extensive turbid plumes. elevated turbidity, degraded benthic habitats, dispersed metals. Seasonal was amplified predominantly impacted whereas contaminated deep-sea ecosystems. modeling underscores urgent need for mitigation strategies (e.g., pretreatment, monitoring) safeguard biodiversity public health.

Язык: Английский

Процитировано

0
Exploring steric sea level variability in the Eastern Tropical Atlantic Ocean: a three-decade study (1993–2022) DOI Creative Commons
Franck Eitel Kemgang Ghomsi, Bayoumy Mohamed, Roshin P. Raj

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Сен. 3, 2024

Abstract Sea level rise (SLR) poses a significant threat to coastal regions worldwide, particularly affecting over 60 million people living below 10 m above sea along the African coast. This study analyzes spatio-temporal trends of anomaly (SLA) and its components (thermosteric, halosteric ocean mass) in Eastern Tropical Atlantic Ocean (ETAO) from 1993 2022. The SLA trend for ETAO, derived satellite altimetry, is 3.52 ± 0.47 mm/year, similar global average 3.56 0.67 mm/year. Of three upwelling regions, Gulf Guinea (GoG) shows highest regional 3.42 0.12 Using ARMORD3D dataset, positive thermosteric 0.88 0.04 mm/year observed, equatorial southern regions. steric component drives interannual variability, while mass dominates long-term trends, as confirmed by GRACE GRACE-FO missions 2002–2022. For those two decades, total SLR altimetry amounts 3.80 0.8 whilst reduced only 0.19 0.05 leaving residual increase ETAO 3.69 0.5 independent change 2.78 0.6 this region, which just closes budget within present uncertainty levels. Spatial analysis indicates warming coast including GoG freshening near Angola. Strong correlations with climate factors, South Index, highlight influence persistent modes. These findings underscore urgent need mitigation adaptation strategies especially densely populated communities.

Язык: Английский

Процитировано

3
Tectonic Reevaluation of West Cameroon domain: Insights from High-Resolution Gravity Models and Advanced Edge Detection Methods DOI

Zambou Tsopgni Yasmine,

Franck Eitel Kemgang Ghomsi,

Robert Nouayou

и другие.

Journal of Geodynamics, Год журнала: 2024, Номер unknown, С. 102061 - 102061

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

2
Sea level rise and coastal flooding risks in the Gulf of Guinea DOI Creative Commons
Franck Eitel Kemgang Ghomsi, Björn Nyberg, Roshin P. Raj

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Ноя. 28, 2024

Abstract The Gulf of Guinea (GoG) is highly vulnerable to sea level rise, with projections indicating a significant increase in permanently inundated land by 2100, ranging from 1,458.1 4,331.7 km 2 . This study evaluates the severity potential coastal inundation GoG comparing rise eight reliable CMIP6 models historical surface height (SSH) data 1993 2015 and current onshore topography. Eight model simulations were selected based on their accuracy reproducing variability Tropical Atlantic GoG, consistency reflecting one-month connection lag between equatorial-driven waves Kelvin Coastal Trapped Waves (CTWs) along critical for predicting regional ocean dynamics. Our findings indicate that this will remain consistent over time. Under high-emission scenarios, up 95% areas could be inundated, potentially displacing million people posing socio-economic shock, given region’s low GDP heavy reliance fisheries. loss cultural heritage livelihoods further compounds challenges. These emphasize urgent need targeted adaptation strategies robust early warning systems, line UN’s Sustainable Development Goals (SDGs), particularly SDG 13 (Climate Action) 14 (Life Below Water). offers precise regionally relevant assessment future risks, providing foundation informed policy interventions mitigate impacts climate change protect communities GoG.

Язык: Английский

Процитировано

2