Searching for potential marine sand resources to mitigate beach erosion in island settings

Hasiotis, Thomas; Gazis, Iason-Zois; Anastasatou, Marianthi; Manoutsoglou, Evangelia; Velegrakis, Adonis F.; Kapsimalis, Vasilios; Karditsa, Aikaterini; Stamatakis, Michael G.

doi:10.1080/1064119x.2020.1721623

Cited by 6 publications

(5 citation statements)

References 39 publications

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“…However, beach nourishment in island settings depends on the availability of suitable filling sediments, preferably from local sources. As marine aggregates (MA) form the most suitable, but often scarce, material for beach replenishment [29,30], the availability/sustainability of local MA deposits should also be considered.…”

Section: Of 22mentioning

confidence: 99%

“…The methodological approach for the MA survey comprised evaluation of the available information on the local geology/geomorphology that provided some indications for potentially favorable locations of MA deposit occurrence [29,30]. In addition, environmental constraints and human activities were also considered.…”

Section: Marine Aggregate Survey (Step 4)mentioning

confidence: 99%

“…First, an assessment of the Chios onshore geology and the location of the land drainage systems, which may have potentially provided suitable land-sourced sediments to offshore deposits, e.g., [30], was carried out. Other limiting factors for MA extraction were considered, including (Figure 2): water depth limitations to dredging activities, the distribution of Posidonia meadows offshore of Chios, the extent of the Greek territorial waters (6 nautical miles), restrictions due to trawling activities, the presence of marine archaeological sites, the Natura 2000 network, the occurrence of submarine cables, aquaculture activities (mostly located along the northeastern Chios coast) and the location of suitable ports that could support MA activities.…”

Section: Marine Aggregate (Ma) Potential For Beach Nourishmentmentioning

confidence: 99%

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Assessment of and Adaptation to Beach Erosion in Islands: An Integrated Approach

Andreadis

Chatzipavlis

Hasiotis

et al. 2021

JMSE

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Island beaches, which form significant natural and economic resources, are under increasing erosion risk due to sea level rise. The present contribution proposes an integrated methodological framework for the evaluation of the socio-economic significance of beaches and their vulnerability to sea level rise and the design of effective adaptation measures. The approach comprises four steps: (i) beach ranking on the basis of their socio-economic significance and vulnerability in order to prioritize adaptation responses; (ii) monitoring of the hydro- and morphodynamic regime of the most highly ranking beaches using field observations and modelling, (iii) assessment of the sediment volumes required for beach nourishment under different scenarios of sea level rise and nourishment designs; (iv) evaluation of the marine aggregate potential of the adjacent areas that can be used for beach nourishment. The framework was applied to the Greek island of Chios, which has many beaches that are already under erosion. The methodology was shown to provide a structured approach for the assessment and response to erosion of the most vulnerable beach.

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Section: Of 22mentioning

confidence: 99%

Section: Marine Aggregate Survey (Step 4)mentioning

confidence: 99%

Section: Marine Aggregate (Ma) Potential For Beach Nourishmentmentioning

confidence: 99%

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Assessment of and Adaptation to Beach Erosion in Islands: An Integrated Approach

Andreadis

Chatzipavlis

Hasiotis

et al. 2021

JMSE

Self Cite

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“…Although there is no available information on annual extraction volumes, they are rather of the order of hundreds of thousands of m3 rather than millions. The relevant regulatory framework is multi-level and comprises a series of laws [80,81], which also define the constitution of committees that make decisions regarding the granting of MA extraction concessions [82]. Total seabed physical damage or biodiversity disturbance have not been identified.…”

Section: Physical Pressuresmentioning

confidence: 99%

MSFD In-Depth Knowledge of the Marine Environment as the Stepping Stone to Perform Marine Spatial Planning in Greece

Paramana

Karditsa

Milatou

et al. 2021

Water

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The multiple anthropogenic activities taking place in the marine environment increase and create a high demand for maritime space. The pressures generated thereof on coastal and marine resources require an integrated planning and management approach. The MSPD (2014/89/EU) forms the legislative framework to regulate maritime activities and ensure a sustainable use of the marine environment. Based on the MSFD (2008/56/EC), the present study provides an overview of the state of the marine environment in Greece and the existing pressures while examining the potential contribution of MSFD knowledge to the MSPD implementation, identifying possible knowledge gaps for the subsequent MSP process phases. It is supported that the MSFD constitutes the best available scientific knowledge about the ecosystem and its dynamics, and provides an open access database which should be optimally used in the MSP process. The MSFD data provided concerning Greece can support the implementation of the MSP process, as the MSFD qualitative descriptors of state and pressures feed MSP sectors with environmental data essential for the MSP application, and weigh the intensity of each descriptor contribution to this interrelationship. Considering MSPD requires the adoption of an ecosystem-based approach, it can only attain its goals based on MSFD input and aspirations.

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“…Beach replenishment schemes are designed in accordance with Dean (2002), taking into account different scenarios of beach width and elevation, as well as filling sediment size (Andreadis et al, 2021). To this end, the possibility of the potential availability of marine aggregate deposits, having similar characteristics with the native beach sediments, is also investigated in the wider offshore areas of the pilot beaches, taking also into account the local geology and marine spatial planning issues (e.g., territorial waters, fishing grounds, wrecks, cables, protected habitats, Hasiotis et al, 2020). This preliminary survey approach includes a bathy-morphological investigation and sediment grab sampling/analysis, considering commonly applied environmental terms for marine aggregate extraction (trailer dredging) to reduce consequences of seabed disturbance.…”

Section: Methodological Frameworkmentioning

confidence: 99%

Beach erosion due to climate change: evaluation and best mitigation practices in touristic beaches of North Aegean Islands and Cyprus – The methodological structure of BEACHTECH project

Hasiotis,

Velegrakis,

Chadjimitsis

et al.

Global NEST International Conference on Environmental Science &Amp; Technology

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The expected relative sea level rise (RSLR) and changes in the intensity/ frequency of extreme sea levels pose a growing erosion threat to beaches, the most important natural resources of touristic islands. In the framework of the BEACHTECH project, the beaches of Lesvos and Chios Islands (NE Aegean) and Cyprus have been digitized and modeled under different scenarios of sea level rise to assess their erosion. Four pilot beaches were selected for further study aiming to determine the present and model the future erosion risk and design effective technical adaptation measures. The results are envisaged to advance knowledge on the assessment of the anticipated coastal erosion and flood risk at island settings, offer options of technical measures (involving prospection for potential marine aggregate deposits) to the partner regional authorities, advance our understanding of the interactions between beaches and their backshore hydrological basins, and promote our capability to observe beach erosion using high frequency coastal monitoring systems.

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Searching for potential marine sand resources to mitigate beach erosion in island settings

Cited by 6 publications

References 39 publications

Assessment of and Adaptation to Beach Erosion in Islands: An Integrated Approach

Assessment of and Adaptation to Beach Erosion in Islands: An Integrated Approach

MSFD In-Depth Knowledge of the Marine Environment as the Stepping Stone to Perform Marine Spatial Planning in Greece

Beach erosion due to climate change: evaluation and best mitigation practices in touristic beaches of North Aegean Islands and Cyprus – The methodological structure of BEACHTECH project

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