Global Distribution and Morphodynamic Patterns of Paired Spits Developed at the Mouths of Interdistributary Bays of Deltas and within Coastal Channels DOI Creative Commons
Javier Alcántara‐Carrió, Ángela Fontán-Bouzas,

Ana Caicedo Rodríguez

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(11), P. 2713 - 2713

Published: May 23, 2023

Previously, paired spits have been described at the mouths of bays, estuaries, and deltas. This study analyzed worldwide distribution morphodynamic patterns located interdistributary bays deltas (three systems) within coastal channels (24 systems). The methodology was based on detailed analysis satellite images, nautical charts, tidal-range databases. found were mainly microtidal coasts high or mid latitudes. Waves main factor controlling convergent progradation breaching spits, while hydraulic blockage for development these due to tide-induced currents, as well minor fluvial outlets in bays. Three identified: (i) stable, with low rates, generally without degradation any spits; (ii) stationary, alternating formation new closure breaches; (iii) instable ephemeral, which included three subtypes, severe erosion one both joining head two forming a single barrier, merging each its channel margin.

Language: Английский

Numerical investigation of the influence of coastal structure removal on sand spit morphology DOI Creative Commons

Shanhang Chi,

Chi Zhang, Weiqiu Chen

et al.

Applied Ocean Research, Journal Year: 2025, Volume and Issue: 158, P. 104560 - 104560

Published: April 14, 2025

Language: Английский

Citations

0
Monitoring and Forecasting of Coastal Erosion in the Context of Climate Change in Saint Louis (Senegal) DOI Creative Commons
Mamadou Adama Sarr, I Pouyè,

Aissatou Sene

et al.

Geographies, Journal Year: 2024, Volume and Issue: 4(2), P. 287 - 303

Published: April 28, 2024

Owing to its unique physical and socio-economic characteristics, the Saint Louis region stands out as one of most susceptible areas in Senegal adverse impacts coastal erosion. The dynamics erosion this are significantly influenced by Langue de Barbarie (LB), a sand spit formed at mouth River. Initially, 2003, 4 m wide artificial breach was strategically introduced mitigate flooding; however, sediment expanded it 6 km 2020, thereby affecting entire region. This study delves into coastline change LB, specifically divided three zones (LB-1, LB-2, LB-3), spanning period from 1994 2042. Leveraging Geographic Information System (GIS) remote sensing techniques, our investigation reveals that, prior breach’s creation, average dynamic rates LB-1, LB-3 were estimated 4.4, 5.9, 4.4 m/year, respectively. Subsequent breach, these shifted −1.2, 8.4, −2.7 with significant observed alongshore −6.6 m/year during 2002–2012. Projecting 2032, LB-1 anticipated experience −11.5 −26.8 respectively, while LB-2 records an accretion rate 8.41 m/year. Eroded expected total 571,458 m2, accumulated 67,191 m2. By 2042, −23 −53.6 resulting 1,021,963 m2 accumulation 94,930 168.2 zone LB-3. These results have implications for solving urgent issue LB.

Language: Английский

Citations

3
Sandy shoreline recovery ability after breakwater removal DOI Creative Commons

Shanhang Chi,

Chi Zhang,

Jinhai Zheng

et al.

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: May 17, 2023

The removal of coastal structures has emerged as an increasingly considered alternative nature-based solution to sandy erosion due unsuited structure construction. However, its effectiveness remains uncertain because the ability natural beach recovery is unclear little understanding shoreline response removal. In this study, we use a recently developed numerical model explore after attached breakwater. Both duration and ratio are analyzed concerning various breakwater configurations environmental settings in simplified generalized framework. We find that naturally recover but with different durations (years centuries) ratios (full partial). A higher (i.e., shorter larger ratio) related effective length, downdrift inclined direction, lower angle wave incidence, greater longshore sediment transport rate. reveal behavior sand spit evolution, including extension split spit, dominant mechanism for distinct processes. Two simple formulas finally proposed preliminarily estimate practical purposes. results present study provide new insights into morphological resilience engineering interventions.

Language: Английский

Citations

9
Satellite-Derived Shoreline Changes of an Urban Beach and Their Relationship to Coastal Engineering DOI Creative Commons
Rijun Hu,

Yingjie Fan,

Xiaodong Zhang

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(13), P. 2469 - 2469

Published: July 5, 2024

Urban beaches, oscillating between development and protection, are more frequently strongly affected by human activities; therefore, comprehensive detailed studies of the geomorphological evolution urban beaches coastal engineering imperative. Based on 769 satellite images from 1986 to 2023, this study employed a transect-focused approach investigate historical shoreline change Haikou Beach, an beach with three nearby offshore artificial islands. The satellite-derived mean water line positions have temporal resolution 41 days before 2014 9 after 2018, random error 4.9 m, ranking among state-of-the-art in field. This revealed that constructions Pearl Island Millennium as well five nourishment projects mainly exerted positive impact Beach. Island’s wave shadow area may form tombolo hundred years. In context heightened development, leveraging existing large future larger archives imagery analyze complex changes helps mitigate absence field data, aiding targeted erosion protection remediation strategies scientific, engineering, societal significance.

Language: Английский

Citations

2
Analysis of wave shoaling and shore-breakers on a low tide terrace beach based on in-situ measurements at Xisha Bay on South China coast DOI
Yuan Li, Chi Zhang,

Hongshuai Qi

et al.

Acta Oceanologica Sinica, Journal Year: 2023, Volume and Issue: 42(7), P. 175 - 184

Published: July 1, 2023

Language: Английский

Citations

3
Evolution of a Sand Spit in Ujeon Tidal Flat: A Case Study from South Korea DOI

Huigyeong Ryu,

Hoi‐Soo Jung,

Joo‐Hyung Ryu

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Shoreline Behavior in Response to Coastal Structures: A Case Study in Haikou Bay, China DOI Open Access
Yu Zhu,

Weite Zeng,

Yingtao Zhou

et al.

Water, Journal Year: 2024, Volume and Issue: 16(21), P. 3106 - 3106

Published: Oct. 30, 2024

The rapid development of coastal structures on sandy coastlines raises concerns about their impacts the shoreline’s evolution and sediment transport dynamics. This study utilized a numerical modeling approach to simulate multi-year response Haikou Bay’s coastline various nearshore structures, including piers large artificial island. LITLINE module MIKE21 (v2020) software was employed analyze patterns across three distinct segments. simulation results indicated that directions varied significantly: from west east in western segment, middle convergence toward center eastern divided by construction trestle. net rates were quantified as 2000 m3/year for 8000 13,000 (west) 10,000 (east) segment. Due conflicting each side breakwater, noticeable deposition occurred both sides. presence island created notable its wave shadow area, while overall impact shoreline changes diminished over time. These findings underscore significant influence human activities, particularly natural shorelines.

Language: Английский

Citations

0
Impacts of Anthropogenic Structures on Coastal Morphodynamics: A Case Study of Sand Spit Evolution in the Ujeon Tidal Flat, South Korea DOI

Huigyeong Ryu,

Hoi‐Soo Jung,

Joo‐Hyung Ryu

et al.

Ocean Science Journal, Journal Year: 2024, Volume and Issue: 59(4)

Published: Nov. 1, 2024

Language: Английский

Citations

0
Global Distribution and Morphodynamic Patterns of Paired Spits Developed at the Mouths of Interdistributary Bays of Deltas and within Coastal Channels DOI Creative Commons
Javier Alcántara‐Carrió, Ángela Fontán-Bouzas,

Ana Caicedo Rodríguez

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(11), P. 2713 - 2713

Published: May 23, 2023

Previously, paired spits have been described at the mouths of bays, estuaries, and deltas. This study analyzed worldwide distribution morphodynamic patterns located interdistributary bays deltas (three systems) within coastal channels (24 systems). The methodology was based on detailed analysis satellite images, nautical charts, tidal-range databases. found were mainly microtidal coasts high or mid latitudes. Waves main factor controlling convergent progradation breaching spits, while hydraulic blockage for development these due to tide-induced currents, as well minor fluvial outlets in bays. Three identified: (i) stable, with low rates, generally without degradation any spits; (ii) stationary, alternating formation new closure breaches; (iii) instable ephemeral, which included three subtypes, severe erosion one both joining head two forming a single barrier, merging each its channel margin.

Language: Английский

Citations

1