Dry beach width varies according to the incoming marine dynamics. Winter storms erode beaches which then recover during summer as calm marine conditions produce accretion. A wide dry beach is essential to provide protection against erosion and flooding due to winter storms and sufficient space for tourism and leisure activities. Hardening marine climate due to climate change effects prevents the full recovery of beaches during summer. Nature-assisted beach enhancement (NABE) techniques are useful tools to boost beach resilience and achieve wider dry beaches. Here we focus on ploughing and three options of scraping (depending on the location of the borrow and filing areas) which have proven to be effective solutions. This study proposes the first methodology to assist in decision-making and the design of NABE actions. The methodology is divided into three main steps: (1) selection of the most appropriate technique employing a decision tree, (2) description of the operational system that decides whether to apply a NABE technique on a particular date or not, and (3) the design of NABE actions. This methodology not only takes into account beach sustainability but also considers goals such as beach widening for touristic purposes. This is the first time that the tourism perspective is considered in the development of guidelines for the application of NABE techniques. Furthermore, it is also the first time that ploughing is proposed as a coastal management tool.

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Methodology for the Design and Implementation of Nature-Assisted Beach Recovery Techniques

  • Erica Pellón,
  • Mauricio González,
  • Raúl Medina

摘要

Dry beach width varies according to the incoming marine dynamics. Winter storms erode beaches which then recover during summer as calm marine conditions produce accretion. A wide dry beach is essential to provide protection against erosion and flooding due to winter storms and sufficient space for tourism and leisure activities. Hardening marine climate due to climate change effects prevents the full recovery of beaches during summer. Nature-assisted beach enhancement (NABE) techniques are useful tools to boost beach resilience and achieve wider dry beaches. Here we focus on ploughing and three options of scraping (depending on the location of the borrow and filing areas) which have proven to be effective solutions. This study proposes the first methodology to assist in decision-making and the design of NABE actions. The methodology is divided into three main steps: (1) selection of the most appropriate technique employing a decision tree, (2) description of the operational system that decides whether to apply a NABE technique on a particular date or not, and (3) the design of NABE actions. This methodology not only takes into account beach sustainability but also considers goals such as beach widening for touristic purposes. This is the first time that the tourism perspective is considered in the development of guidelines for the application of NABE techniques. Furthermore, it is also the first time that ploughing is proposed as a coastal management tool.