Morphological evolution of the Qingshuigou subaqueous delta of the Yellow River before and after the operation of the Xiaolangdi Reservoir (1997-2007) DOI Creative Commons
Jiarui Zhang, Qing Wang, Chao Zhan

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Dec. 18, 2024

The Modern Yellow River Delta has a rich history of geomorphological transformations shaped by frequent avulsions and rapid progradation. However, the delta entered phase altered morphodynamics following construction Xiaolangdi Reservoir, which fundamentally restructured sediment transport regimes seasonal hydrological patterns. These changes have amplified challenges in predicting long-term deltaic evolution under evolving boundary conditions. Qingshuigou Subaqueous Delta, as major depositional zone, provides compelling lens to examine these morphodynamic processes. variations riverine sand fluxes driven water-sand regulation scheme that accompanied Reservoir its impact on front are particularly understudied. This study developed simplified model investigate response water discharges from 1997 2007. findings follows: (1) morphological gradually changed pattern “leading edge deposition localized near-shore erosion” before “enhanced leading increased after construction. (2) weakened spatial distribution erosion process certain extent, changing dominated (63.8% area) accretion (More than 50% (3) temporal variability incoming sediments leads significant coarsening grain size tidal flats southern part abandoned delta, turn maintains relatively steady state shoreline variability. In contrast, spit experiences severe fluctuations due intensified wave action. (4) emphasizes importance considering unsteady discharge modeling delta. It new insights into differentiation geomorphic equilibrium contributes broader understanding evolution.

Language: Английский

Simulating liquefaction-induced resuspension flux in a sediment transport model DOI
Zichen Zhu, Xing Du, Bingchen Liang

et al.

Water Research, Journal Year: 2024, Volume and Issue: 261, P. 122057 - 122057

Published: July 6, 2024

Language: Английский

Citations

4
Effects of xanthan gum treatment on sedimentation and consolidation of kaolinite aggregates DOI Creative Commons
Yeong-Man Kwon, Gye-Chun Cho, Ilhan Chang

et al.

Journal of Rock Mechanics and Geotechnical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
The mechanical properties of Yellow River floodplain silt considering the influence of intermediate principal stress DOI

Yiyuan Qin,

Mengyao Li,

Yonghui Li

et al.

Marine Georesources and Geotechnology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 14

Published: March 25, 2025

This study reveals the mechanical behavior of silt in Yellow River floodplain under 3D stress. A true triaxial apparatus was used to conduct consolidated drained shear tests different intermediate principal stress coefficients (b) and consolidation confining pressures investigate influence on deformation strength silt. The stress-strain curves exhibited strong strain-hardening characteristics during shearing. Due enhanced particle interlocking microstructural reorganization, demonstrated complex b-dependent characteristics. cohesion rose with increasing b, whereas internal friction angle followed a non-monotonic pattern, decreasing slightly as b approached 1. envelope fell between that predicted by Lade-Duncan extended von Mises criteria., which is best generalized nonlinear criterion when soil parameter α 0.533. findings reveal stress-path-dependent mechanisms provide essential parameters for optimizing design underground engineering projects this region.

Language: Английский

Citations

0
Integrating coastal protection structures into vulnerability assessments: A case study from Kerala, India DOI
Sai Ganesh Veeravalli, Mridula G. Murali,

S. Subburaj

et al.

Ocean & Coastal Management, Journal Year: 2025, Volume and Issue: 266, P. 107670 - 107670

Published: April 4, 2025

Language: Английский

Citations

0
Investigating the Element Geochemical Behavior and Provenance of Surface Sediments in the Offshore Area of Sierra Leone, Africa: Insights from Major and Trace Elements DOI Open Access

Mengying Hu,

Yingtao Zhu,

Wenliang Chen

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3540 - 3540

Published: Dec. 9, 2024

The element geochemical behavior and provenance of marine sediments are significance to understanding the oceanic material cycle. Here, we tested grain size major trace elements 35 surface in offshore area Sierra Leone, analyzed content characteristics controlling factors elements, discussed source sediments, made a comparative study with China. results show that sandy silt is main sediment type research area, average mean (Mz) 4.15Φ. Ca samples highest among (except Si), an 5.1%. Sr Ti, P, Mn), 378.2 μg/g. correlation analysis factor there three sources namely, terrigenous weathering products, ilmenite-dominated ore, biochemical substances. Compared China offshore, more affected by biochemistry have special ore input characteristics.

Language: Английский

Citations

1
Morphological evolution of the Qingshuigou subaqueous delta of the Yellow River before and after the operation of the Xiaolangdi Reservoir (1997-2007) DOI Creative Commons
Jiarui Zhang, Qing Wang, Chao Zhan

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Dec. 18, 2024

The Modern Yellow River Delta has a rich history of geomorphological transformations shaped by frequent avulsions and rapid progradation. However, the delta entered phase altered morphodynamics following construction Xiaolangdi Reservoir, which fundamentally restructured sediment transport regimes seasonal hydrological patterns. These changes have amplified challenges in predicting long-term deltaic evolution under evolving boundary conditions. Qingshuigou Subaqueous Delta, as major depositional zone, provides compelling lens to examine these morphodynamic processes. variations riverine sand fluxes driven water-sand regulation scheme that accompanied Reservoir its impact on front are particularly understudied. This study developed simplified model investigate response water discharges from 1997 2007. findings follows: (1) morphological gradually changed pattern “leading edge deposition localized near-shore erosion” before “enhanced leading increased after construction. (2) weakened spatial distribution erosion process certain extent, changing dominated (63.8% area) accretion (More than 50% (3) temporal variability incoming sediments leads significant coarsening grain size tidal flats southern part abandoned delta, turn maintains relatively steady state shoreline variability. In contrast, spit experiences severe fluctuations due intensified wave action. (4) emphasizes importance considering unsteady discharge modeling delta. It new insights into differentiation geomorphic equilibrium contributes broader understanding evolution.

Language: Английский

Citations

0