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Gavriil Xanthopoulos
Institute of Mediterranean Forest Ecosystems, Hellenic Agricultural Organization “Demeter”, 11528 Athens, Greece

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Short Biography

Research director at the Institute of Mediterranean Forest Ecosystems; Head of the forest fire laboratory. He holds a B.Sc. degree in Forestry from the Aristotle University of Thessaloniki, Greece, and M.Sc. and Ph.D. degrees in Forestry with specialization in Forest Fire Science from the University of Montana, U.S.A. He has participated in more than 25 research projects and has produced numerous scientific publications.

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Journal article
Published: 04 May 2021 in Sustainability
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Safety in touristic destinations is of utmost importance since tourists’ preferences change frequently in response to emerging threats. Natural hazards are a significant risk and, as such, they need to be considered in the effort for safe tourism. Services and systems monitoring and predicting extreme natural phenomena and disasters in sites of special tourist and cultural interest can lead to more effective risk management and incident response. This paper presents Xenios, a system under development in Greece that provides early warning and risk communication services via web-based and mobile phone applications. We present the user requirements analysis contacted, which led to the design of a modular system architecture through a formal Business Process Model procedure. Currently, early warning systems for wildfire, floods, and extreme weather events are offered, based on a fusion of information from satellite imagery, meteorological forecasts, and risk estimation models. Moreover, visitors’ dispersion monitoring via unmanned aerial vehicles (UAVs) and Wi-Fi connection signals is also offered, along with emergency response planning and ticketing system’s interfacing. The system is built around a modular architecture that permits the easy integration of new subsystems or other danger forecasting modules, depending on the site’s actual needs and limitations. Xenios also provides a mobile app for site visitors, which establishes a communication link for sending alarms, but also serves them with useful tourist information, so that they are encouraged to download and use the app. Finally, the opportunities for supporting a viable business model are also discussed. The results of this study could prove useful in designing other natural risk management systems for sites of cultural and natural interest.

ACS Style

Chrysostomos Psaroudakis; Gavriil Xanthopoulos; Dimitris Stavrakoudis; Antonios Barnias; Vassiliki Varela; Ilias Gkotsis; Anna Karvouniari; Spyridon Agorgianitis; Ioannis Chasiotis; Diamando Vlachogiannis; Athanasios Sfetsos; Konstantinos Kaoukis; Aikaterini Christopoulou; Petros Antakis; Ioannis Gitas. Development of an Early Warning and Incident Response System for the Protection of Visitors from Natural Hazards in Important Outdoor Sites in Greece. Sustainability 2021, 13, 5143 .

AMA Style

Chrysostomos Psaroudakis, Gavriil Xanthopoulos, Dimitris Stavrakoudis, Antonios Barnias, Vassiliki Varela, Ilias Gkotsis, Anna Karvouniari, Spyridon Agorgianitis, Ioannis Chasiotis, Diamando Vlachogiannis, Athanasios Sfetsos, Konstantinos Kaoukis, Aikaterini Christopoulou, Petros Antakis, Ioannis Gitas. Development of an Early Warning and Incident Response System for the Protection of Visitors from Natural Hazards in Important Outdoor Sites in Greece. Sustainability. 2021; 13 (9):5143.

Chicago/Turabian Style

Chrysostomos Psaroudakis; Gavriil Xanthopoulos; Dimitris Stavrakoudis; Antonios Barnias; Vassiliki Varela; Ilias Gkotsis; Anna Karvouniari; Spyridon Agorgianitis; Ioannis Chasiotis; Diamando Vlachogiannis; Athanasios Sfetsos; Konstantinos Kaoukis; Aikaterini Christopoulou; Petros Antakis; Ioannis Gitas. 2021. "Development of an Early Warning and Incident Response System for the Protection of Visitors from Natural Hazards in Important Outdoor Sites in Greece." Sustainability 13, no. 9: 5143.

Book chapter
Published: 29 July 2020 in Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires
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ACS Style

Gavriil Xanthopoulos; Miltiadis Athanasiou. Crown Fire. Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires 2020, 183 -197.

AMA Style

Gavriil Xanthopoulos, Miltiadis Athanasiou. Crown Fire. Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires. 2020; ():183-197.

Chicago/Turabian Style

Gavriil Xanthopoulos; Miltiadis Athanasiou. 2020. "Crown Fire." Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires , no. : 183-197.

Proceedings
Published: 01 January 2020 in Environmental Sciences Proceedings
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Marathon Lake is an artificial reservoir with great environmental, ecological, social, and economic significance because it was the main source of water for Athens, the capital of Greece, for many years. The present study details the first attempt to map sedimentation in Marathon Lake in detail, using bathymetric mapping and soil erosion field surveying of the torrent watershed areas. First, the results of a bathymetric survey carried out in 2011 were compared with topographic maps that pre-date the construction of the dam. Based on this comparison, an estimated 8.34 hm3 of sediment have been deposited in the 80 years since the dam’s construction. In the current survey, the Revised Universal Soil Loss Equation (RUSLE) was used to estimate soil loss in the watershed area of the streams that end in Marathon Lake. The estimated value from the RUSLE was substantially lower (3.02 hm3) than that calculated in the bathymetric survey.

ACS Style

Michail Xanthakis; Kosmas Pavlopoulos; Vasilios Kapsimalis; Georgios Apostolopoulos; Gavriil Xanthopoulos; Panagiotis Stefanidis; Niki Evelpidou. Prediction of Soil Loss in a Reservoir Watershed Using an Erosion Model and Modern Technological Tools: A Case Study of Marathon Lake, Attica in Greece. Environmental Sciences Proceedings 2020, 2, 63 .

AMA Style

Michail Xanthakis, Kosmas Pavlopoulos, Vasilios Kapsimalis, Georgios Apostolopoulos, Gavriil Xanthopoulos, Panagiotis Stefanidis, Niki Evelpidou. Prediction of Soil Loss in a Reservoir Watershed Using an Erosion Model and Modern Technological Tools: A Case Study of Marathon Lake, Attica in Greece. Environmental Sciences Proceedings. 2020; 2 (1):63.

Chicago/Turabian Style

Michail Xanthakis; Kosmas Pavlopoulos; Vasilios Kapsimalis; Georgios Apostolopoulos; Gavriil Xanthopoulos; Panagiotis Stefanidis; Niki Evelpidou. 2020. "Prediction of Soil Loss in a Reservoir Watershed Using an Erosion Model and Modern Technological Tools: A Case Study of Marathon Lake, Attica in Greece." Environmental Sciences Proceedings 2, no. 1: 63.

Reference work
Published: 22 November 2019 in Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires
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ACS Style

Gavriil Xanthopoulos; Miltiadis Athanasiou. Crown Fire. Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires 2019, 1 -15.

AMA Style

Gavriil Xanthopoulos, Miltiadis Athanasiou. Crown Fire. Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires. 2019; ():1-15.

Chicago/Turabian Style

Gavriil Xanthopoulos; Miltiadis Athanasiou. 2019. "Crown Fire." Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires , no. : 1-15.

Concept paper
Published: 25 February 2018 in Fire
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Every year worldwide some extraordinary wildfires occur, overwhelming suppression capabilities, causing substantial damages, and often resulting in fatalities. Given their increasing frequency, there is a debate about how to address these wildfires with significant social impacts, but there is no agreement upon terminology to describe them. The concept of extreme wildfire event (EWE) has emerged to bring some coherence on this kind of events. It is increasingly used, often as a synonym of other terms related to wildfires of high intensity and size, but its definition remains elusive. The goal of this paper is to go beyond drawing on distinct disciplinary perspectives to develop a holistic view of EWE as a social-ecological phenomenon. Based on literature review and using a transdisciplinary approach, this paper proposes a definition of EWE as a process and an outcome. Considering the lack of a consistent “scale of gravity” to leverage extreme wildfire events such as in natural hazards (e.g., tornados, hurricanes and earthquakes) we present a proposal of wildfire classification with seven categories based on measurable fire spread and behavior parameters and suppression difficulty. The categories 5 to 7 are labeled as EWE.

ACS Style

Fantina Tedim; Vittorio Leone; Malik Amraoui; Christophe Bouillon; Michael R. Coughlan; Giuseppe M. Delogu; Paulo M. Fernandes; Carmen Ferreira; Sarah McCaffrey; Tara K. McGee; Joana Parente; Douglas Paton; Mário G. Pereira; Luís M. Ribeiro; Domingos X. Viegas; Gavriil Xanthopoulos. Defining Extreme Wildfire Events: Difficulties, Challenges, and Impacts. Fire 2018, 1, 9 .

AMA Style

Fantina Tedim, Vittorio Leone, Malik Amraoui, Christophe Bouillon, Michael R. Coughlan, Giuseppe M. Delogu, Paulo M. Fernandes, Carmen Ferreira, Sarah McCaffrey, Tara K. McGee, Joana Parente, Douglas Paton, Mário G. Pereira, Luís M. Ribeiro, Domingos X. Viegas, Gavriil Xanthopoulos. Defining Extreme Wildfire Events: Difficulties, Challenges, and Impacts. Fire. 2018; 1 (1):9.

Chicago/Turabian Style

Fantina Tedim; Vittorio Leone; Malik Amraoui; Christophe Bouillon; Michael R. Coughlan; Giuseppe M. Delogu; Paulo M. Fernandes; Carmen Ferreira; Sarah McCaffrey; Tara K. McGee; Joana Parente; Douglas Paton; Mário G. Pereira; Luís M. Ribeiro; Domingos X. Viegas; Gavriil Xanthopoulos. 2018. "Defining Extreme Wildfire Events: Difficulties, Challenges, and Impacts." Fire 1, no. 1: 9.

Review article
Published: 31 October 2011 in Journal of Environmental Management
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Every year approximately half a million hectares of land are burned by wildfires in southern Europe, causing large ecological and socio-economic impacts. Climate and land use changes in the last decades have increased fire risk and danger. In this paper we review the available scientific knowledge on the relationships between landscape and wildfires in the Mediterranean region, with a focus on its application for defining landscape management guidelines and policies that could be adopted in order to promote landscapes with lower fire hazard. The main findings are that (1) socio-economic drivers have favoured land cover changes contributing to increasing fire hazard in the last decades, (2) large wildfires are becoming more frequent, (3) increased fire frequency is promoting homogeneous landscapes covered by fire-prone shrublands; (4) landscape planning to reduce fuel loads may be successful only if fire weather conditions are not extreme. The challenges to address these problems and the policy and landscape management responses that should be adopted are discussed, along with major knowledge gaps.

ACS Style

Francisco Moreira; Olga Viedma; Margarita Arianoutsou; Thomas Curt; Nikos Koutsias; Eric Rigolot; Anna Barbati; Piermaria Corona; Pedro Vaz; Gavriil Xanthopoulos; Florent Mouillot; Ertugrul Bilgili. Landscape – wildfire interactions in southern Europe: Implications for landscape management. Journal of Environmental Management 2011, 92, 2389 -2402.

AMA Style

Francisco Moreira, Olga Viedma, Margarita Arianoutsou, Thomas Curt, Nikos Koutsias, Eric Rigolot, Anna Barbati, Piermaria Corona, Pedro Vaz, Gavriil Xanthopoulos, Florent Mouillot, Ertugrul Bilgili. Landscape – wildfire interactions in southern Europe: Implications for landscape management. Journal of Environmental Management. 2011; 92 (10):2389-2402.

Chicago/Turabian Style

Francisco Moreira; Olga Viedma; Margarita Arianoutsou; Thomas Curt; Nikos Koutsias; Eric Rigolot; Anna Barbati; Piermaria Corona; Pedro Vaz; Gavriil Xanthopoulos; Florent Mouillot; Ertugrul Bilgili. 2011. "Landscape – wildfire interactions in southern Europe: Implications for landscape management." Journal of Environmental Management 92, no. 10: 2389-2402.

Book chapter
Published: 14 September 2011 in Managing Forest Ecosystems
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ACS Style

Gavriil Xanthopoulos; Carlo Calfapietra; Paulo Fernandes. Fire Hazard and Flammability of European Forest Types. Managing Forest Ecosystems 2011, 79 -92.

AMA Style

Gavriil Xanthopoulos, Carlo Calfapietra, Paulo Fernandes. Fire Hazard and Flammability of European Forest Types. Managing Forest Ecosystems. 2011; ():79-92.

Chicago/Turabian Style

Gavriil Xanthopoulos; Carlo Calfapietra; Paulo Fernandes. 2011. "Fire Hazard and Flammability of European Forest Types." Managing Forest Ecosystems , no. : 79-92.

Comparative study
Published: 11 March 2010 in Sensors
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Satellite remote sensing, with its unique synoptic coverage capabilities, can provide accurate and immediately valuable information on fire analysis and post-fire assessment, including estimation of burnt areas. In this study the potential for burnt area mapping of the combined use of Artificial Neural Network (ANN) and Spectral Angle Mapper (SAM) classifiers with Landsat TM satellite imagery was evaluated in a Mediterranean setting. As a case study one of the most catastrophic forest fires, which occurred near the capital of Greece during the summer of 2007, was used. The accuracy of the two algorithms in delineating the burnt area from the Landsat TM imagery, acquired shortly after the fire suppression, was determined by the classification accuracy results of the produced thematic maps. In addition, the derived burnt area estimates from the two classifiers were compared with independent estimates available for the study region, obtained from the analysis of higher spatial resolution satellite data. In terms of the overall classification accuracy, ANN outperformed (overall accuracy 90.29%, Kappa coefficient 0.878) the SAM classifier (overall accuracy 83.82%, Kappa coefficient 0.795). Total burnt area estimates from the two classifiers were found also to be in close agreement with the other available estimates for the study region, with a mean absolute percentage difference of ~1% for ANN and ~6.5% for SAM. The study demonstrates the potential of the examined here algorithms in detecting burnt areas in a typical Mediterranean setting.

ACS Style

George P. Petropoulos; Krishna Prasad Vadrevu; Gavriil Xanthopoulos; George Karantounias; Marko Scholze. A Comparison of Spectral Angle Mapper and Artificial Neural Network Classifiers Combined with Landsat TM Imagery Analysis for Obtaining Burnt Area Mapping. Sensors 2010, 10, 1967 -1985.

AMA Style

George P. Petropoulos, Krishna Prasad Vadrevu, Gavriil Xanthopoulos, George Karantounias, Marko Scholze. A Comparison of Spectral Angle Mapper and Artificial Neural Network Classifiers Combined with Landsat TM Imagery Analysis for Obtaining Burnt Area Mapping. Sensors. 2010; 10 (3):1967-1985.

Chicago/Turabian Style

George P. Petropoulos; Krishna Prasad Vadrevu; Gavriil Xanthopoulos; George Karantounias; Marko Scholze. 2010. "A Comparison of Spectral Angle Mapper and Artificial Neural Network Classifiers Combined with Landsat TM Imagery Analysis for Obtaining Burnt Area Mapping." Sensors 10, no. 3: 1967-1985.