Scholarlink

<p>This study presents the first integrated assessment that combines long-term (1954–2023) Digital Shoreline Analysis System (DSAS) results with short-term (2021–2023) in situ morphological monitoring of the Oualidia Lagoon, located on the Moroccan Atlantic coast. Shoreline dynamics were quantified using historical aerial photographs, high-resolution satellite imagery, and GPS–RTK surveys, while sandpit evolution was analyzed through detailed Digital Terrain Models (DTMs) and volumetric profiling. Over the 69-year period, shoreline change rates ranged from –1.60 m·yr⁻<sup>1</sup> in erosion-prone sectors to + 2.76 m·yr⁻<sup>1</sup> in highly accreting areas. The sandpit area expanded by ~ 56,000 m<sup>2</sup> between 2021 and 2023, accompanied by significant sediment deposition across monitored profiles. These morphological adjustments are primarily driven by tidal currents, wave action, and sediment supply from adjacent beaches and offshore deposits. The findings provide valuable insights into sediment connectivity and coastal resilience, offering a scientific basis for adaptive management and conservation strategies in semi-enclosed lagoon systems facing increasing climatic and anthropogenic pressures.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Multi-timescale analysis of Morpho-evolution in a Coastal Lagoon: A case study Oualidia Lagoon, Morocco

  • 期刊论文

  • 发表日期：

    2025年12月5日

查看全文
  • Mohammed Bouchkara,
  • Nouhaila Erraji Chahid,
  • Khalid El Khalidi,
  • Noujas Varangalil,
  • Imane Joudar,
  • Abdenaim Minoubi,
  • Aïssa Benazzouz,
  • Bendahhou Zourarah

摘要

This study presents the first integrated assessment that combines long-term (1954–2023) Digital Shoreline Analysis System (DSAS) results with short-term (2021–2023) in situ morphological monitoring of the Oualidia Lagoon, located on the Moroccan Atlantic coast. Shoreline dynamics were quantified using historical aerial photographs, high-resolution satellite imagery, and GPS–RTK surveys, while sandpit evolution was analyzed through detailed Digital Terrain Models (DTMs) and volumetric profiling. Over the 69-year period, shoreline change rates ranged from –1.60 m·yr⁻1 in erosion-prone sectors to + 2.76 m·yr⁻1 in highly accreting areas. The sandpit area expanded by ~ 56,000 m2 between 2021 and 2023, accompanied by significant sediment deposition across monitored profiles. These morphological adjustments are primarily driven by tidal currents, wave action, and sediment supply from adjacent beaches and offshore deposits. The findings provide valuable insights into sediment connectivity and coastal resilience, offering a scientific basis for adaptive management and conservation strategies in semi-enclosed lagoon systems facing increasing climatic and anthropogenic pressures.