Опубликована: Янв. 1, 2024
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Язык: Английский
Engineering Applications of Computational Fluid Mechanics, Год журнала: 2024, Номер 18(1)
Опубликована: Янв. 5, 2024
Reduced riverine sediment supply and sea-level rise (SLR) threaten land building ecosystem in deltas. However, the sediment-morphodynamic processes a channel-shoal complex are not well understood. Here, based on bathymetry Delft3D model, geomorphic changes suspended budgets South Passage, Nanhui Jiuduansha Shoal mega-Changjiang Delta were examined. Results reveal that with concentration (SSC) decreased by 75%, net deposition rate was reduced from 4.20 cm/yr 1979–1990 to 3.21 1990–2003, further declined 2.21 2003–2013 0.40 2013–2020. Severe erosion occurred along upper Passage extended toward mouth bar. Strong accretions accumulated Shoal. After river SSC 0.53 kg/m3 0.35 kg/m3, 0.16 0.12 lowered 3.13%, 7.35% 8.67%, respectively. Moreover, SLR of 5 cm, 15 25 50 cm resulted 1.11%, 4.18%, 4.16%, 14.79% reduction trapping efficiency. Our findings highlight strong likelihood input, SLRs intensified anthropogenic effects will exacerbate deficit mega fluvial-tidal
Язык: Английский
Процитировано
12
Environment Development and Sustainability, Год журнала: 2024, Номер unknown
Опубликована: Июль 26, 2024
Язык: Английский
Процитировано
10
Marine Pollution Bulletin, Год журнала: 2025, Номер 213, С. 117600 - 117600
Опубликована: Фев. 3, 2025
Язык: Английский
Процитировано
1
Geomatics Natural Hazards and Risk, Год журнала: 2024, Номер 15(1)
Опубликована: Апрель 15, 2024
Deltas like the Ganges-Brahmaputra Delta (GBD) experience significant land subsidence due to overlaying load, consolidation, sediment compaction, regional tectonics, and human activity. The southwestern region of Bangladesh, marked by its low-lying floodplain with compressible sediments, experiences subsidence. However, accurate assessments for these areas are very scarce, often focusing on point-based measurements. This study employed Interferometric Synthetic Aperture Radar analysis, spanning from 2014 2022, effectively measure subsidence, visualize it spatially. In area, rates were found be ranging 3 20 mm/year, most experiencing 3-10 mm/year. While some show higher 10-13 few exceeded 14 average rate was 5.98 demonstrating spatial variability, in Gopalganj, Patuakhali, Bhola, Barishal, other areas. findings validated based existing Global navigation satellite system (GNSS) data points, affirming their reliability. Despite minor discrepancies measurements at specific overall results align well data. comprehensive analysis provides a detailed assessment highlighting variability offering valuable insights future coastal development risk mitigation strategies.
Язык: Английский
Процитировано
5
The Science of The Total Environment, Год журнала: 2024, Номер 947, С. 174703 - 174703
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
5
The Science of The Total Environment, Год журнала: 2025, Номер 970, С. 178988 - 178988
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
The Science of The Total Environment, Год журнала: 2023, Номер 903, С. 166624 - 166624
Опубликована: Авг. 27, 2023
Язык: Английский
Процитировано
12
Communications Earth & Environment, Год журнала: 2024, Номер 5(1)
Опубликована: Март 26, 2024
Abstract The world’s coasts and deltas are progressively threatened by climate change human activities. degree at which coastlines can adapt to these changes strongly depends on the sediment availability. availability of muddy sediments is however poorly known. This study aims developing a mud budget for largest system uninterrupted tidal flats: Wadden Sea. resulting nearly closed: ~ 12 million ton/year enters its western end, 1.5 added local rivers, while ton annually deposits or extracted anthropogenic A deficit already exists in downdrift areas, will only become more pronounced with increased sea level rise rates. Mud thus finite resource similar sand, should be treated as such management strategies. Resolving future challenges therefore require cross-border perspective management.
Язык: Английский
Процитировано
4
Estuaries and Coasts, Год журнала: 2024, Номер 47(7), С. 1877 - 1892
Опубликована: Апрель 12, 2024
Язык: Английский
Процитировано
4
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Июнь 17, 2024
Abstract Earthquakes present severe hazards for people and economies can be primary drivers of landscape change yet their impact to river-channel networks remains poorly known. Here we show evidence an abrupt earthquake-triggered avulsion the Ganges River at ~2.5 ka leading relocation mainstem channel belt in Bengal delta. This is recorded freshly discovered sedimentary archives immense relict a paleo-earthquake sufficient magnitude cause major liquefaction generate large, decimeter-scale sand dikes >180 km from nearest seismogenic source region. Precise luminescence ages sand, fill, breached partially liquefied floodplain deposits support coeval timing earthquake. Evidence reorganization network world’s largest delta broadens risk posed by seismic events region recognition as geomorphic agents this other tectonically active lowlands. The recurrence comparable ground would catastrophic any heavily populated, large river basins deltas along Himalayan arc (e.g., Indus, Ganges, Brahmaputra, Ayeyarwady). compounding effects climate human impacts heighten extend vulnerability many lowlands worldwide such cascading hazards.
Язык: Английский
Процитировано
4