Influence of storms on coastal retreat in SW Spain

Puig, María; Río, Laura Del; Plomaritis, Theocharis A.; Benavente, Javier

doi:10.2112/si70-033.1

Cited by 8 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Previous studies suggested that hurricanes can alter the geomorphology of coast and further affect the coastline position [63,64]. To quantitatively assess the hurricane-induced impact on coastline change, a hurricane frequency index (HFI) was introduced, which was similar to the storm frequency index developed by Nebel [65].…”

Section: Impact Of Hurricane On Coastline Changementioning

confidence: 99%

Detecting Coastline Change with All Available Landsat Data over 1986–2015: A Case Study for the State of Texas, USA

2018

Atmosphere

View full text Add to dashboard Cite

Coastline change often results from social and natural factors, such as human activities in the coastal zone, long-term and short-term sea level change, hurricane occurrences, subsequent recovery, and so on. Tracking coastline change is essential to deepen our understanding of coastal responses to these factors. Such information is also required for land use planning and sustainable development of coastal zones. In this context, we aimed to collect all available Landsat data (TM: Thematic Mapper, ETM+: Enhanced Thematic Mapper Plus and OLI: Operational Land Imager) over 1986-2015 for tracking the coastline dynamic and estimating its change rate in the State of Texas, USA. First, the land vs. water maps at an annual scale were derived from the satellite images. The border between land and water represents the coastline in this study. Second, the annual land area was obtained to characterize the coastline dynamic and a linear regression model was used for estimating the change rate. We also analyzed the potential driving factors of the observed coastline change. The results reveal that the coastline in the State of Texas changed at a rate of −0.154 ± 0.063 km 2 /year from 1986 to 2015, which indicates that the coastline has mainly experienced an erosion over the past three decades. Specifically, 52.58% of the entire coastline retreated to the land while a 47.42% portion advanced to the ocean. Long-term sea level rise can result in the erosion of coastline. Hurricane occurrences can explain the relatively strong coastline erosion. Besides, significant difference between the coastline change rate with a higher curvature and a lower curvature was observed. This study establishes a general method for detecting coastline change at large spatial and long-term temporal scales, by using remote sensing that can give fundamental information on coastline change. This is important for making scientific and reasonable policies of sustainable development of coastal zones.

show abstract

Section: Impact Of Hurricane On Coastline Changementioning

confidence: 99%

Detecting Coastline Change with All Available Landsat Data over 1986–2015: A Case Study for the State of Texas, USA

2018

Atmosphere

View full text Add to dashboard Cite

show abstract

“…The results present the perdurance of the already identified retreating trend of the system [44,[51][52][53], as well as an acceleration in this process for the area of Camposoto Beach, as the dune toe retreat registered in this area during the 10-year period spanning from 2008 to 2018 (−2.30 m/year) was doubled in comparison to the one presented by Del Rio et al [51] for the period from 1956 to 2008 over a wider area (an average of −0.9 m/year with maximum of 1.4 m/year). The reason for the observed differences could be methodological (different time scale resolutions) and/or physical (changes in the trend after a high-energy storm occurred in 2010, from which the beach could not fully recover).…”

Section: Discussionmentioning

confidence: 72%

High-Resolution Interannual Evolution of the Dune Toe at a Mesotidal Barrier (Camposoto Beach, SW Spain)

Montes,

Benavente,

Puig

et al. 2024

JMSE

Self Cite

View full text Add to dashboard Cite

Over recent years, processes related to marine storms, sediment shortages and human intervention have caused the global retreat of many coastal systems and the degradation of their dunes. In this context, changes in the dune toe are commonly used as a proxy to study the interannual shoreline evolution, and it is usually analyzed using orthophotography, while high temporal- and spatial-scale resolution studies of dune toe evolution are not frequent. In this work, a quasi-monthly study of dune toe data was carried out between 2008 and 2018. These data, taken from the RTK-DGPS and UAS systems, were subjected to shoreline analysis, and they showed an average regression rate of −2.30 m/year, a higher value than the one registered until 2008 (1 m/year). This suggests an acceleration in the erosion suffered within the system, which was revealed to be more intense in the northern sector of the study area. Dune toe variability increased over the years, probably due to the presence of washover fans breaking the foredune that were reactivated and expanded during storm events. The ephemeral progradation of the dune toe was also noted, which could be explained with reference to wind events and/or beach nourishment that had been carried out over the studied period. From the analysis of the dune toe elevation, a decrease in this variable was obtained, especially in the areas affected due to washover fans. This finding is supported by the significant correlation of the dune toe elevation and erosion trend, suggesting that the areas where the dune toe was lower are prone to suffering a greater retreat. This correlation provides insight into the future evolution of the barrier, suggesting a state of degradation and a transition to a lower-resilience state.

show abstract

“…As a first approach, variations in the cliff sector were analyzed for two years (2016-2018), detecting mass movements and variations in cliff profiles [52,55]. Moreover, in this case, variations in the cliff top were analyzed to estimate the evolution of the cliff during the aforementioned period using DSAS (Digital Shoreline Analysis System) [55], widely used in coastal studies [56][57][58]. In this sense, this type of study must be complemented with future field surveys by installing sensors to monitor soil humidity or by analyzing the flora and fauna of each site in order to understand their behavior and importance.…”

Section: Methodsmentioning

confidence: 99%

The Use of UAVs for the Characterization and Analysis of Rocky Coasts

Gómez‐Pazo

Pérez‐Alberti

2021

Drones

View full text Add to dashboard Cite

Rocky coasts represent three quarters of all coastlines worldwide. These areas are part of ecosystems of great ecological value, but their steep configuration and their elevation make field surveys difficult. This fact, together with their lower variation rates, explains the lower numbers of publications about cliffs and rocky coasts in general compared with those about beach-dune systems. The introduction of UAVs in research, has enormously expanded the possibilities for the study of rocky coasts. Their relative low costs allow for the generation of information with a high level of detail. This information, combined with GIS tools, enables coastal analysis based on Digital Models and high spatial resolution images. This investigation summarizes the main results obtained with the help of UAVs between 2012 and the present day in rocky coastline sections in the northwest of the Iberian Peninsula. These investigations have particularly focused on monitoring the dynamics of boulder beaches, cliffs, and shore platforms, as well as the structure and function of ecosystems. This work demonstrates the importance of unmanned aerial vehicles (UAVs) for coastal studies and their usefulness for improving coastal management. The Galician case was used to explain their importance and the advances in the UAVs’ techniques.

show abstract

Influence of storms on coastal retreat in SW Spain

Cited by 8 publications

References 24 publications

Detecting Coastline Change with All Available Landsat Data over 1986–2015: A Case Study for the State of Texas, USA

Detecting Coastline Change with All Available Landsat Data over 1986–2015: A Case Study for the State of Texas, USA

High-Resolution Interannual Evolution of the Dune Toe at a Mesotidal Barrier (Camposoto Beach, SW Spain)

The Use of UAVs for the Characterization and Analysis of Rocky Coasts

Contact Info

Product

Resources

About