Serafeim Poulos

• Professor
• National and Kapodistrian University of Athens

The present paper deals with an inhabited, creeping-mountainous landmass with profound surface deformation that affects the local community. The scope of the paper is to gather surficial and subsurface information in order to understand the parameters of this creeping mass, which is usually affected by several parameters, such as its geometry, subs...

The present study investigates the formation and development of a coastal barrier associated with the recent evolution of the beach/dune system of the Kyparissiakos Gulf (SE Ionian Sea, central Mediterranean Sea) during the late phase of the Holocene (Flandrian) transgression. The study is based on the application of combined geophysical (ERT: Elec...

Beaches play a pivotal role in supporting the socio-economic sector, particularly within the 'Sun, Sea, and Sand' (3S) tourism model. Valued for their ecosystem services, these coastal landforms are among the most dynamic and vulnerable environments, facing significant pressure from various climate challenges, which is further intensified by extens...

Rising sea levels pose a significant threat to coastal infrastructure, particularly seaports, which are vital to global maritime trade. This study assesses the impact of sea level rise (SLR) on the Port of Heraklion, Greece, contributing to the broader discourse on climate change in the port sector while providing a framework for evaluating and qua...

The present study examines the recent evolution of a cliff coast along the Aegean Sea, considering its geotectonic context, oceanographic factors, sediment dynamics, and human impact. Initially, the formation of this coastal stretch was influenced by neotectonic faults, oriented both semi-parallel and diagonally relative to the present coastline or...

Coastal environments and, especially, beach zones are among the most common areas for tourism activity, comprising valuable economic resources. Beach zones are highly dynamic environments, recognized as highly vulnerable to climate change coastal ecosystems because of, amongst other, extreme events and sea-level rise. It is considerably important f...

The coastline of the Aegean Sea has a length of about 13,660 km, which belongs to Greece by 78.6% and to Turkey by 21.4%. The Greek coasts consist of hard rocks (43.0%), soft rocks (47.8%), and non-cohesive sediments (9.3%). Most depositional coasts are located in the northern Aegean, where relatively large rivers form extended deltas. At the same...

This overview presents the different water masses present in the various primary and secondary marine regions of the Mediterranean Sea and Black Sea, providing information on their main physical characteristics (i.e., temperature, salinity, density), the water depths at which they have been observed and the processes involved in their formation. Th...

The presence of active hydrothermal vent fields near residential areas and their possible link to volcanic activity poses a potential hazard to the environment, society, and the economy. By capitalizing on Autonomous Underwater Vehicle sampling methodologies and applying the Generalized Moments Method model for geological and physical processes in...

Ecosystem-based Blue Growth reflects the need to develop human activities taking place in the marine environment, under the scope of protecting marine ecosystems. To this end, the Marine Strategy Framework Directive identifies the specific ecological characteristics of a marine area, the human activities taking place in it and the main pressures in...

The coastal environment of the west and south coast of Peloponnesus, Greece is characterized as an essentially tideless coastal environment exposed to high wave activity. Regarding the identification, the thickness and characteristics of the uppermost substratum of the selected coastal zones, at Hellonitis, Kyparissiakos and Messiniakos Gulfs, a de...

The tool assesses natural factors and the impact of human activities as well as the available mitigation measures in a cost-benefit perspective and with a view to mitigating the impacts of climate change. Therefore, the tool is designed to respond to both erosion (as a natural disaster) and erosion due to human (inappropriate) intervention, as well...

This paper presents the methodology of an applied geophysical and remote sensing research at river deltas for their subsurface and surface structure and its application in the deltaic plain of Pineios River (Thessaly, Greece). The scope is to primarily calculate the thickness of deltaic post alpine deposits, with the contribution of Transient Elect...

The coastal zone may be considered as the location where the marine and land environments interact dynamically and coexist with human societies. Globally, natural and human systems are being severely threatened by the sea level rise related to climate change. The outcome between the dynamic relationship of coastal environments and marine processes,...

Αναλυτικά τα περιεχόμενα των 15 Κεφαλαίων του Βιβλίου.

Το βιβλίο εισέρχεται σε θέματα εφαρμογής της ωκεανογραφικής επιστήμης μέσω της ανάπτυξης δύο διακριτών ενοτήτων. Η 1η ενότητα περιλαμβάνει τα κεφάλαια που αφορούν στην Παράκτια Υδροδυναμική (Κεφ.1), στην Δυναμική Ιζηματολογία – Μορφοδυναμική (Κεφ.2) και στις εφαρμογές τους στη Διάβρωση των Ακτών (Κεφ.3), όπως και στις επιπτώσεις σε αυτές της Κλιμ...

The project ILIDA-KIT is based on multiple levels of information organized in a multi-disciplinary interactive GIS platform, which lead to the development of a set of appropriate indicators (e.g., environmental, geographical, economic). The ultimate purpose of the Tool is in the selection of the most appropriate anthropogenic intervention; the latt...

The present study investigates the inner shelf of the SE Evia as a potential area hosting Marine Aggregate deposits. The quantitative estimation of the reserves was based on a geophysical survey, while the qualitative analyses, based on granulometric, mineralogic and geochemical analyses, revealed their suitability for various industrial uses. The...

Sea level rise could result in the loss and shrinkage of coastal habitats, jeopardizing the persistence of a number of species that rely upon these highly dynamic and sensitive areas. With reproduction and population recruitment depending exclusively on low-lying sandy beaches, marine turtles are among the organisms for which sea level rise represe...

The coastal and associated shelf environments constitute the interface between the land and ocean regime [...]

The current study aims to clarify the structural regime of the deltaic valley of Pineios river (Thessaly, Greece). The structural control of a deltaic area is usually a crucial parameter for its Palaio-geographical evolution and the latter needs to be clear for the contemporary conservation of such a sensitive ecotope environmentally. The investiga...

Research infrastructures have been established throughout Europe in order to create robust organizations that will facilitate and enhance research and innovation processes and will advance society with innovative products and services. The Hellenic Integrated Marine Observing, Forecasting and Technology System (component of HIMIOFoTS RI) has been i...

The present contribution aims to give an insight into the main terrestrial and marine processes leading to delta flooding in the case of the transboundary Evros delta, located at the microtidal NE Aegean Sea, on the basis of recorded flood events in the Evros deltaic plain. The prevailing weather conditions at the onset of the event, along with sea...

[SCIENTIFIC CULTURE - ISSN (online): 2407-9529 ISSN (print):2408-0071] Pavlopetri is one of the oldest submerged cities in the world, established during the Final Neolithic Period (as early as 3500 BC), with its occupation being extended to the post-palatial period (1400-1100 BC) of Minoan chronology, while there is evidence of human presence from...

The aim of this paper is to estimate the amount of aeolian dust, tansferred by dry and wet processes, that is deposited to the eleven marine regions of the Mediterranean-Black Sea Marine System (MBMS) and to compare it to the riverine influxes (i.e. suspended and dissolved sediment loads). This research is based on information for aeolian dust depo...

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...

The aim of this paper is to investigate the complex relationship between monthly water discharge and suspended sediment load using a flexible statistical model, i.e. a Gaussian Mixture Model. The theoretical principles of this model and its related Expectation- Maximization (E-M) algorithm are briefly analyzed, and subsequently applied to hydrologi...

Reduction of nutrient loadings is often prioritized among other management measures for improving the water quality of freshwaters within the catchment. However, urban point sources and agriculture still thrive as the main drivers of nitrogen and phosphorus pollution in European rivers. With this article we present a nationwide assessment of nitrog...

The Mediterranean Sea and the Black Sea comprise a semi-enclosed intercontinental Marine System (MBMS), bordered by the Eurasian and African continents. Its total marine surface is circa 3 × 10⁶ km², while its drainage basin exceeds 7 × 10⁶ km²; the latter includes the watersheds of 39 large (>10⁴ km²) river systems, which correspond to about 83% o...

The present study investigates the distribution of trace metals (Fe, Mn, Cr, Zn, Pb, Cu and Al), as indicators of pollution, in the surficial inner shelf sediments along the northern coast of Heraklio Gulf (Crete Island). Despite the fact that Heraklio Gulf is an industrialized urban area, hosting the third most important commercial harbour in Gree...

The article presents a new hybrid bio-optical transformation (HBT) method for the rapid modelling of bathymetry in coastal areas. The proposed approach exploits free-of-charge multispectral images and their processing by applying limited manpower and resources. The testbed area is a strait between two Greek Islands in the Aegean Sea with many small...

In the present study, the investigation of the offshore area of Kissamos Bay (Greece), was implemented as a potential area hosting Marine Aggregate (MA) deposits. Kissamos Bay is located at the NW Crete, comprising the inner continental shelf. A high resolution bathymetric and geophysical survey was conducted in order to locate and quantify the dim...

Ocean colour satellite sensors are promising tools in the study and monitoring of the riverine surficial suspended particulate matter (SPM) transport and distribution in coastal waters. In this study the capabilities of Landsat-8/Operational Land Imager (L8/OLI) and Moderate Resolution Imaging Spectroradiometer (MODIS) sensors are tested in terms o...

Marine spatial planning (MSP) forms a complex process, deriving from a concept of a practical approach to sustainable development of the marine and coastal space and resources. MSP needs structured and defined steps and its application requires the identification of the detailed spatial and temporal ecological characteristics of the marine area to...

Physio-geographical factors play an important role in the selection of the appropriate site for a port location. The port of Alexandroupolis, started operating in the middle 1870s as a small fishing shelter, and is currently aspired to act as a major port in the Eastern Mediterranean region regarding tourism and commerce. The present contribution i...

Monitoring the riverine output of Suspended Particulate Matter (SPM) distribution in marine embayment is a crucial factor for the water quality of neighbouring coastal regions. This study presents satellite-derived SPM calculations against in-situ measurements in the continental shelf of North-East Aegean surrounding the transboundary Evros river m...

The Mediterranean and Black seas compose a semi-enclosed intercontinental marine system (MBMS) connected to the Atlantic Ocean, hosting a coastal population that exceeds 150 million inhabitants that share a coastline of 54,000 km long and being involved in various economic activities. The MBMS has a total marine surface area of ~3000 × 10⁶ km², rep...

The Evros deltaic plain (North Aegean Sea, Greece) covers an area of 188 km² and is shared by Greece and Turkey by its current main channel. This paper investigates deltaic plain evolution during the last seven decades (1945–2017), taking into consideration human interventions and their impacts on deltaic processes. Outcomes indicate that the const...

The current study aims to clarify the hydrogeological regime of the deltaic valley of Pinios river (Thessaly, Greece). Its purpose is to map the existing aquifers below the deltaic plain, but also to assess the quality of their water (detect possible seawater intrusion), through the combined application of VES and TEM soundings. The results of the...

The disastrous phenomenon of aseismic ground fissures along the eastern Thessaly basin has deteriorated since 1989. The main reason for these fissures is the over-pumping, which leads to differential vertical compaction of the aquifer system and subsidence on the land surface. In this paper, we present the results of a combined geophysical survey a...

A quantitative assessment of the riverine freshwater, suspended and dissolved sediment loads is provided for the watersheds of the four primary (Western Mediterranean-WMED, Central Mediterranean-CMED, Eastern Mediterranean-EMED and Black Sea-BLS) and eleven secondary marine regions of the Mediterranean and Black Sea Earth System (MBES). On the basi...

Coastal zone monitoring is essential in order to understand their evolution and incorporate sustainable coastal management practices. Frequent data collection is essential but often surveys can be costly and time-consuming. Several costly and time-consuming tools and techniques have been developed during the last few years for change detection and...

The area under investigation represents the NW continental margin of the Aegean Sea i.e. the Thermaikos Gulf and the associated NW Sporades Basin. Surficial seabed sediments are of terrigenous origin whilst in terms of grain size, offshore sediments maybe distinguished into silty sediments that cover the northern and western part of the Gulf; claye...

The goal of this work was to explore whether or not the intention of engaging could be understood (Study 1) and promoted (Study 2), by using an extension of the theory of planned behaviour. In Study 1, stakeholders from three European Mediterranean case studies were surveyed: Baixo Vouga Lagunar (Portugal), SCOT Provence Méditerranée (France), and...

Kamari is located at the southeastern part of Thira, and is an area of high touristic activity, adding up to the local and national economy. However, the area is at risk of coastal erosion due to extensive residential development, as well as extreme wind and weather regime. Four groins and two detached parallel breakwaters were constructed in 1991,...

Acheloos River is the 2nd largest river of Greece, with a total length of 220 km and a drainage area of about 5000 km2. The River delta and alluvial plain are situated at the SW margin of Etoloakarnania prefecture in Western Greece and are characterized as areas of great ecological importance (Natura and Ramsar sites). In the past, Acheloos delta h...

The coastal zone of the Messini-Kalamata area (W-E trending coastline with a length of 21.3 km) receives water/sediment influxes from the rivers Pamissos, Nedontas, Nedas and Aris. During the period 12-19 of November 2017, a strong storm occurred at the Messiniakos Gulf with a maximum rainfall level of up to 66 mm/day, strong (>6 Beaufort) southern...

The board of directors of the Hellenic Oceanographers’ Association (HOA) has conducted an anonymous survey among its members during the years 2016-2018, in order to record and analyze several aspects of Greek Oceanographers’ scientific profiles and professional career and compare with the previous status. Participants were asked to fill a multi-par...

COASTAL CHANGES IN KAMARI BEACH (SANTORINI ISLAND, CYCLADES GREECE) Kamari is located at the southeastern part of Thira, and is an area of high touristic activity, adding up to the local and national economy. However, the area is at risk of coastal erosion due to extensive residential development, as well as extreme wind and weather regime. Four gr...

Study of the sedimentological processes and evolution of the coastline �of Marathon Bay - Schinias beach. Marathon Bay, which is located at northeast Attica (Figure 1 and 2), is an area with great historical and social significance. Ιn the area are encountered Schinias National Park, at the northeast of the bay, the Olympic Rowing Centre, military...

Introduction The purpose of the study is the determination of the morphodynamical processes and the changes of the shoreline of Marathon Bay, which is located at northeast Attica. The area was lagoon 3.500 years BP (Pavlopoulos et al.2006) and it is characterized by low elevations and smooth slopes. Methods The survey of the coastal and marine geom...

Oceanographic investigations have significantly benefited from multispectral satellite products that simplify monitoring in coastal regions thanks to their high spatial-temporal resolution. The surface Suspended Particulate Matter (SPM) is an important water quality parameter which can be derived from empirical or analytical algorithms by using the...

The European Space Agency’s (ESA) Sentinel-2A mission in 2015, opened the new era of high-resolution imagery of Earth’s surface, evolving and enriching, among others, the near-shore and offshore oceanographic investigation. With this preliminary work we attempt to use, process and evaluate the Sentinel-2A product to estimate and map the distributio...

The state of the beaches in Greece is a critical factor for the sustainability of the Greek economy as major economic goods and services of the Greek tourism industry are based on Greek tourist beaches. This is evidenced by the fact that about 90% of foreign visitors are on Greek beaches, i.e. about 11.6 million tourists. However, based on the most...

The present investigation concerns the application of Αrticle 8.2 of the Mediterranean ICZM protocol in the Kyparissiakos Gulf (Ionian Sea, Greece) and especially in the environmentally sensitive coastal dune field of its central part. The Kyparissiakos dune field comprises a set of coastal ecosystems of exceptional value and needs effective ICZM,...

Maritime Spatial Planning (MSP) is a significant tool for the achievement of Good Environmental Status, sustainable development and blue growth in the marine environment. Although cooperation among countries within MSP processes could be considered difficult (cultural, social, policy/ governance differences, non EU membership), it is a guiding prin...

River deltas sustain important ecosystems with rich biodiversity and large biomass, as well as human populations via the availability of water and food sources. Anthropogenic activities, such as urbanization, tourism and agriculture, may pose threats to river deltas. The knowledge of the factors controlling the regional water quality regime in thes...

ERA-Interim, ECMWF’s reanalysis product, includes wave and atmospheric characteristics, with high temporal and spatial scale, providing more information on the marine state. Even though their assimilation process has been validated and verified in numerous studies, their performance in more local scales is still under examination. This research foc...

This paper presents the results of a marine geophysical and sedimentological study carried out offshore of Eresos beach (Lesvos, NE Aegean) to investigate the potential of the area in exploitable Marine Aggregate (MA) deposits that could be used for the nourishment of the eroding beach. High-resolution data were acquired using an echo-sounder, a ch...

The present contribution provides an initial assessment of the impacts of the longterm (climatic, i.e. sea level rise) and episodic (meteorological) on the sandy beach zone along the coast of Katerini region (NW Aegean Sea). Thus, the future retreat of the coastline, due to sea level rise (SLR) induced by climate change, has been estimated on the b...

This study investigates the potential of remotely sensed data to map surface suspended particulate matter (SPM) in the Continental shelf area of the North-East Aegean in Greece, by using Landsat-8 satellite sensor. Initially, simultaneous above water ocean color measurements were validated against SPM field data and compared to a concurrent Landsat...

This study uses an integrated approach to investigate the offshore area of Kissamos Bay, NW Crete Island, Greece, as a prospective marine aggregate (MA) deposit. Non-fuel marine minerals and especially marine aggregates (sand and gravel) are reviewed from the perspective of resources during the last decades. The possible MA deposit of Kissamos Bay...

The present contribution constitutes the first comprehensive attempt to (a) record the spatial characteristics of the beaches of the Aegean archipelago (Greece), a critical resource for both the local and national economy, and (b) provide a rapid assessment of the impacts of the long-term and episodic sea level rise (SLR) under different scenarios....

In the present study, the effect of the anticipated sea-level rise is investigated along the coastal zone extending in between Chalkoutsi and Nea Palatia that is located in southern coast of the semi-enclosed Southern Evoikos Gulf. The terrestrial part of the coastal zone consists of low-lying alluvial deposits, including the sensitive coastal envi...

This study deals with aspects of geomorphology and nearshore marine processes in the coastal zone located between Livanates and Agios Konstantinos (North Evoikos Gulf, central Greece). Evoikos Gulf is a tectonic graben bounded by WNW-ESE trending normal faults; it can be further characterized as semi-closed marine basin with water depths exceeding...

Grain size trend analysis is a method that determines sediment transport direction, based on the relationship of grain size parameters (mean size, sorting, skewness). The application of the method in the seabed sediments of Alexandroupolis Gulf showed that there are three different sub areas of distinctive sediment movement of bottom sediments (wat...

The present study evaluates the pollution level of the surficial sediments of the coastal area around the city of Chios (east Aegean Sea), with particular emphasis on the Port of Chios, fishing shelters, the waste water treatment plant and the electric power plant. For this reason, the metals/trace metals (Pb, Fe, Zn, Cu, Cr, Mn, Al, Ni) along with...

The present study investigates the existence of a "palaeo-foreshore zone" at Molos beach in or after 1884 A.D., as defined in the Greek legislation (Law 2971/ 19.12.2001). To this end, existing geological and climatological information were gathered, detailed geomorphological mapping was carried out and surficial sediment samples were collected alo...

The present contribution constitutes the first comprehensive attempt to (a) record the spatial characteristics of the beaches of the Aegean Archipelago (Greece), a critical resource for both the local and national economy; and (b) provide a rapid assessment of the impacts of the long-term and episodic sea level rise (SLR), under different scenarios...

In the present work we study the correlation of surface suspended material concentrations (SPM) derived from medium-scale satellite data (spatial resolution of 30m) with the diffuse attenuation coefficient (Kd490) in the water column of N. Aegean Sea. Furthermore, their effect in the identification of seagrass meadows (mainly Posidonia) was examine...

In the present work we study the correlation of surface suspended material concentrations (SPM) derived from medium-scale satellite data (spatial resolution of 30m) with the diffuse attenuation coefficient (Kd490) in the water column of N. Aegean Sea. Furthermore, their effect in the identification of seagrass meadows (mainly Posidonia) was examine...

In this study we evaluate the capabilities of two satellite sensors for assessing surface suspended particulate matter (SPM) in Alexandroupolis Gulf, NE Aegean, Greece. A consistent physic-based process was applied to Landsat-8 Operational Land Imager (OLI) and Pleiades-1B. Images were gathered on low river discharge period (August & September 2014...