Related Experiment Video
Updated: Jan 12, 2026
14:44
Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration
Published on: June 7, 2024
2.2K
From perception to modelling: Nature-based solutions as a tool for coastal risk management
Marina d'Avdeew1,2,3, Louis Janin1,4, Lydie Goeldner-Gianella2,3
1Artelia, 16, rue Simone Veil, 93400 Saint-Ouen-sur-Seine, France.
Cambridge Prisms. Coastal Futures
|November 3, 2025
Summary
Coastal nature-based solutions (NBS) offer flood protection benefits. This study found dyke relocation through breaches to be the most effective NBS strategy in Authie Bay, bridging the gap between public perception and scientific data.
Area of Science:
- Coastal engineering
- Environmental science
- Risk management
Background:
- Coastal nature-based solutions (NBS) are increasingly popular in France for flood protection.
- These projects face technical and social acceptability challenges.
- A gap exists between public perception and scientific data regarding NBS effectiveness.
Purpose of the Study:
- To compare public perception data with numerical modeling results for NBS scenarios in Authie Bay.
- To assess the gap between perceived and actual flood protection from NBS.
- To evaluate the effectiveness of dyke relocation as an NBS strategy.
Main Methods:
- Utilized data from the DIGUES research program's 2021 perception survey.
- Employed a numerical model to assess flood protection efficiency of NBS scenarios.
- Translated survey scenarios into the numerical model for cross-comparison.
Main Results:
- Dyke relocation through breaches showed significant benefits compared to other NBS scenarios in Authie Bay.
- The study identified discrepancies between perceived and actual protection levels.
- Effectiveness of NBS varied with scale, with dyke relocation proving most advantageous.
Conclusions:
- Dyke relocation through breaches is a highly beneficial NBS strategy for Authie Bay.
- Addressing the gap between public perception and scientific data is crucial for successful NBS implementation.
- Numerical modeling provides objective insights into NBS effectiveness for coastal flood risk management.
More Related Videos
Related Concept Videos
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
278
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
278
01:29Applications of GIS: Disaster Management and Emergency Response
444
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
444
01:16Response Surface Methodology
595
Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
The process of RSM involves several key steps:
595
01:19Design Example: Maintaining Level of an Embankment
401
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
401
01:30Typical Model Studies
613
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
613
01:57Adaptations that Reduce Water Loss
27.9K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.9K