Erosion problems in Alexandroupolis coastline, North-Eastern Greece

Xeidakis, G. S.; Delimani, P.; Skias, Stylianos G.

doi:10.1007/s00254-007-0697-7

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…Because the passive samplers were deployed 10 m below the surface, they may not have detected recent surface water pollution. In contrast, P. oceanica and passive samplers at sites A and B are expected to be similarly exposed to pollutants because they are both in contact with bottom waters and also because the water column there is generally well mixed because of high turbulence (Xeidakis et al, 2007;Athanasoulis and Skarsoulis, 1992;Karditsa and Poulos, 2007).…”

Section: Introductionmentioning

confidence: 94%

Monitoring polycyclic aromatic hydrocarbons in the Northeast Aegean Sea using Posidonia oceanica seagrass and synthetic passive samplers

Apostolopoulou¹,

Monteyne²,

Krikonis³

et al. 2014

Marine Pollution Bulletin

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Section: Introductionmentioning

confidence: 94%

Monitoring polycyclic aromatic hydrocarbons in the Northeast Aegean Sea using Posidonia oceanica seagrass and synthetic passive samplers

Apostolopoulou¹,

Monteyne²,

Krikonis³

et al. 2014

Marine Pollution Bulletin

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“…Alexandroupolis, the capital of the prefecture of Evros, is the largest city of Thrace and the region of Eastern Macedonia in terms of size and population. This very fast-growing city has an important port and it is a summer resort centre in SE Balkans due to the great location at the center of sea and land routes connecting Greece with Turkey [50]. The coastal zone area under investigation extends to more than 50 km and can be distinguished in the western unity and the eastern unity in terms of geomorphology.…”

Section: Coastal Area Of Alexandroupolis City-evros Delta Regionmentioning

confidence: 99%

Spatio-Temporal Assessment of Land Deformation as a Factor Contributing to Relative Sea Level Rise in Coastal Urban and Natural Protected Areas Using Multi-Source Earth Observation Data

et al. 2020

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The rise in sea level is expected to considerably aggravate the impact of coastal hazards in the coming years. Low-lying coastal urban centers, populated deltas, and coastal protected areas are key societal hotspots of coastal vulnerability in terms of relative sea level change. Land deformation on a local scale can significantly affect estimations, so it is necessary to understand the rhythm and spatial distribution of potential land subsidence/uplift in coastal areas. The present study deals with the determination of the relative vertical rates of the land deformation and the sea-surface height by using multi-source Earth observation—synthetic aperture radar (SAR), global navigation satellite system (GNSS), tide gauge, and altimetry data. To this end, the multi-temporal SAR interferometry (MT-InSAR) technique was used in order to exploit the most recent Copernicus Sentinel-1 data. The products were set to a reference frame by using GNSS measurements and were combined with a re-analysis model assimilating satellite altimetry data, obtained by the Copernicus Marine Service. Additional GNSS and tide gauge observations have been used for validation purposes. The proposed methodological approach has been implemented in three pilot cases: the city of Alexandroupolis in the Evros Delta region, the coastal zone of Thermaic Gulf, and the coastal area of Killini, Araxos (Patras Gulf) in the northwestern Peloponnese, which are Greek coastal areas with special characteristics. The present research provides localized relative sea-level estimations for the three case studies. Their variation is high, ranging from values close to zero, i.e., from 5–10 cm and 30 cm in 50 years for urban areas to values of 50–60 cm in 50 years for rural areas, close to the coast. The results of this research work can contribute to the effective management of coastal areas in the framework of adaptation and mitigation strategies attributed to climate change. Scaling up the proposed methodology to a continental level is required in order to overcome the existing lack of proper assessment of the relevant hazard in Europe.

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“…Noteworthy, and in a Mediterranean context (Figure 7, Table I) the cliff retreat rates derived from dendrogeomorphic reconstructions are much smaller than those measured in sandy-silty environments of Greece (50 cm yr À1 , Xeidakis et al, 2007), in bio-calcarenites of Italy (20 cm yr À1 , Andriani and Walsh, 2007), and in the quartzose environments of Israel (20 cm yr À1 , Zviely and Klein, 2004) (Table I, Figure 7). At the hemispheric scale, by contrast, our results are in the same order of magnitude as erosion rates derived from 257 photogrammetric analyses on sandstone cliffs in the Algarve region (1.9 cm yr À1 , Marques, 1997), North Yorkshire (3 cm yr À1 , Agar, 1960) or the Larache region (Morocco, 8 cm yr À1 , Marques, 2003).…”

mentioning

confidence: 90%

Quantification of cliff retreat in coastal Quaternary sediments using anatomical changes in exposed tree roots

Lopez-Saez

Corona

Morel

et al. 2018

Earth Surf Processes Landf

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Sea cliffs represent 80% of the world's coasts and can be found virtually in all types of morphogenetic environments. Most studies on rocky environments focused on the impacts of modern sea level rise on cliff stability derived from sequential surveys, direct measurements or erosional features in anthropogenic structures. In this study, we explore the potential of dendrogeomorphic techniques to quantify multidecadal changes in coastal environments on Porquerolles Island (France). We sampled a total of 56 cross‐sections from 16 Pinus halepensis Mill. roots growing on former alluvial deposits and on sandy‐gravelly cliffs to quantify mean annual cliff retreat rates as well as changes in cliff geometry. Anatomical changes in roots have been used successfully in the past to quantify continuous denudation rates on slopes, channel incision and gullying processes but the approach has not been used so far in a coastal cliff context. At Porquerolles Island, reconstructed rates of cliff retreat cover 30–40 years and show average erosion rates between 0.6 and 3.9 cm yr−1 (average: 2.1 cm yr−1). Highest rates are observed at Pointe de la Tufière (2.6–3.9 cm yr−1), a small rock promontory that is more exposed to wave and storm surges than the remainder of the study area. By contrast, lower erosion rates are recorded at cliffs protected by the La Courtade pocket beach (0.6–1.9 cm yr−1). This contribution demonstrates that dendrogeomorphic analyses of roots clearly have a significant potential and that they are a powerful tool for the quantification of multidecadal rates of cliff retreat in areas where measurements of past erosion are lacking. More specifically, the approach also has clear advantages over the shorter time series obtained with repeat monitoring (e.g. terrestrial laser scanning, sensors, erosion pins) or over longer, but more coarsely resolved records obtained from aerial photographs or radio‐nuclides. © 2018 John Wiley & Sons, Ltd.

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Erosion problems in Alexandroupolis coastline, North-Eastern Greece

Cited by 7 publications

References 5 publications

Monitoring polycyclic aromatic hydrocarbons in the Northeast Aegean Sea using Posidonia oceanica seagrass and synthetic passive samplers

Monitoring polycyclic aromatic hydrocarbons in the Northeast Aegean Sea using Posidonia oceanica seagrass and synthetic passive samplers

Spatio-Temporal Assessment of Land Deformation as a Factor Contributing to Relative Sea Level Rise in Coastal Urban and Natural Protected Areas Using Multi-Source Earth Observation Data

Quantification of cliff retreat in coastal Quaternary sediments using anatomical changes in exposed tree roots

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