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In this paper, the development of a Web-based GIS system for the monitoring and assessment of the Black Sea is presented. The integrated multilevel system is based on the combination of terrestrial and satellite Earth observation data through the technological assets provided by innovative information tools and facilities. The key component of the system is a unified, easy to update geodatabase including a wide range of appropriately selected environmental parameters. The collection procedure of current and historical data along with the methods employed for their processing in three test areas of the current study are extensively discussed, and special attention is given to the overall design and structure of the developed geodatabase. Furthermore, the information system includes a decision support component (DSC) which allows assessment and effective management of a wide range of heterogeneous data and environmental parameters within an appropriately designed and well-tested methodology. The DSC provides simplified and straightforward results based on a classification procedure, thus contributing to a monitoring system not only for experts but for auxiliary staff as well. The examples of the system's functionality that are presented highlight its usability as well as the assistance that is provided to the decision maker. The given examples emphasize on the Danube Delta area; however, the information layers of the integrated system can be expanded in the future to cover other regions, thus contributing to the development of an environmental monitoring system for the entire Black Sea.
Ilias N. Tziavos; Thomas K. Alexandridis; Borys Aleksandrov; Agamemnon Andrianopoulos; Ioannis D. Doukas; Ion Grigoras; Vassilios N. Grigoriadis; Ioanna D. Papadopoulou; Paraskevas Savvaidis; Argyrios Stergioudis; Liliana Teodorof; George Vergos; Lyudmila Vorobyova; Georgios C. Zalidis. Development of a Web-based GIS monitoring and environmental assessment system for the Black Sea: application in the Danube Delta area. Environmental Monitoring and Assessment 2016, 188, 492 .
AMA StyleIlias N. Tziavos, Thomas K. Alexandridis, Borys Aleksandrov, Agamemnon Andrianopoulos, Ioannis D. Doukas, Ion Grigoras, Vassilios N. Grigoriadis, Ioanna D. Papadopoulou, Paraskevas Savvaidis, Argyrios Stergioudis, Liliana Teodorof, George Vergos, Lyudmila Vorobyova, Georgios C. Zalidis. Development of a Web-based GIS monitoring and environmental assessment system for the Black Sea: application in the Danube Delta area. Environmental Monitoring and Assessment. 2016; 188 (8):492.
Chicago/Turabian StyleIlias N. Tziavos; Thomas K. Alexandridis; Borys Aleksandrov; Agamemnon Andrianopoulos; Ioannis D. Doukas; Ion Grigoras; Vassilios N. Grigoriadis; Ioanna D. Papadopoulou; Paraskevas Savvaidis; Argyrios Stergioudis; Liliana Teodorof; George Vergos; Lyudmila Vorobyova; Georgios C. Zalidis. 2016. "Development of a Web-based GIS monitoring and environmental assessment system for the Black Sea: application in the Danube Delta area." Environmental Monitoring and Assessment 188, no. 8: 492.
For civil protection reasons there is a strong need to improve the inventory of areas that are more vulnerable to earthquake ground motions or to earthquake-related secondary effects, such as landslides, liquefaction or soil amplifications. The use of remote sensing and Geographic Information Systems (GIS) methods along with the related geo-databases can assist local and national authorities to be better prepared and organized. Remote sensing and GIS techniques are investigated in north-eastern Greece in order to contribute to the systematic, standardized inventory of those areas that are more susceptible to earthquake ground motions, to earthquake-related secondary effects and to tsunami-waves. Knowing areas with aggregated occurrence of causal (“negative”) factors influencing earthquake shock and, thus, the damage intensity, this knowledge can be integrated into disaster preparedness and mitigation measurements. The evaluation of satellite imageries, digital topographic data and open source geodata contributes to the acquisition of the specific tectonic, geologic and geomorphologic settings influencing local site conditions in an area and, thus, estimate possible damage to be suffered.
Barbara Theilen-Willige; Paraskevas Savvaidis; Ilias N. Tziavos; Ioanna Papadopoulou. Remote Sensing and Geographic Information Systems (GIS) Contribution to the Inventory of Infrastructure Susceptible to Earthquake and Flooding Hazards in North-Eastern Greece. Geosciences 2012, 2, 203 -220.
AMA StyleBarbara Theilen-Willige, Paraskevas Savvaidis, Ilias N. Tziavos, Ioanna Papadopoulou. Remote Sensing and Geographic Information Systems (GIS) Contribution to the Inventory of Infrastructure Susceptible to Earthquake and Flooding Hazards in North-Eastern Greece. Geosciences. 2012; 2 (4):203-220.
Chicago/Turabian StyleBarbara Theilen-Willige; Paraskevas Savvaidis; Ilias N. Tziavos; Ioanna Papadopoulou. 2012. "Remote Sensing and Geographic Information Systems (GIS) Contribution to the Inventory of Infrastructure Susceptible to Earthquake and Flooding Hazards in North-Eastern Greece." Geosciences 2, no. 4: 203-220.
Natural disasters have a considerable effect in human, infrastructure and economy. In the case of a, e.g., catastrophic earthquake that happens and affects the urban environment, immediate and efficient actions are required that ensure the minimization of the damage and loss of human lives. Local and national authorities should respond in order to meet the above objective. Nowadays, one of the most appropriate tools for this purpose is the web-based geographic information systems (GIS). Such a system, named SyNaRMa (Information System for Natural Risk Management in the Mediterranean), has been developed in the frame of an INTERREG IIIB ArchiMED project (2006–2008). The present paper aims at addressing the role of the SyNaRMa system as a tool for facilitating disaster management. It is argued that the development of a web-based GIS can assist disaster management agencies to improve the quality of their decision making and increase efficiency and effectiveness in all levels of disaster management activities. This research is primarily based on the findings of the abovementioned project that resulted in the development of an information system for natural risk management in the Mediterranean that can facilitate sharing, access and usage of spatial data in disaster management, i.e., preparedness, response and recovery activities.
Ioanna D. Papadopoulou; Paraskevas Savvaidis; Ilias N. Tziavos. Using the SyNaRMa system as a disaster management tool. Natural Hazards 2010, 57, 453 -464.
AMA StyleIoanna D. Papadopoulou, Paraskevas Savvaidis, Ilias N. Tziavos. Using the SyNaRMa system as a disaster management tool. Natural Hazards. 2010; 57 (2):453-464.
Chicago/Turabian StyleIoanna D. Papadopoulou; Paraskevas Savvaidis; Ilias N. Tziavos. 2010. "Using the SyNaRMa system as a disaster management tool." Natural Hazards 57, no. 2: 453-464.
One of the scopes of the SEISIMPACT-THES project is to organize into digital form and evaluate the records of reported damage, related to the occurrence of the 1978 Thessaloniki earthquake (Mw=6.5). For the exploitation of these data, an advanced Information System is under development that will include:• A properly designed database• A Geographic Information System containing all the necessary data (after digitization and corrections) enriched with more recent data, as well as topographic, geological and geophysical data of the region (metropolitan area of Thessaloniki)• A model system of accessing the above via the web and mobile devicesThe basic data for the implementation of the project are derived from the archives of the Agency for the Relief of Seismic Catastrophes in Northern Greece (YASBE). The data are included in the forms of inspection of buildings carried out in Thessaloniki shortly afterwards the 1978 earthquake. It is estimated that there are roughly 63,000 building inspection forms in the region of Thessaloniki. The exploitation of this rich database with the description on the damage that the buildings suffered will result in a complete electronic database properly standardized so that it can be linked to the geographic data of a Geographic Information System. The database structure will allow multiple queries and processes to study in depth the behavior of buildings in Thessaloniki, and its correlation with other geological, geophysical, geotechnical factors
P. Savvaidis; I. Doukas; Th. Hatzigogos; I. N. Tziavos; A. Kiratzi; Z. Roumelioti; A. Savvaidis; N. Theodulidis; G. Drakatos; S. Koutoupes; G. Karantonis; A. Sotiriadis. DATA BASE DEVELOPMENT AND EVALUATION OF EARTHQUAKE DAMAGE REPORTS UNDER THE SEISIMPACT-THES SYSTEM. Bulletin of the Geological Society of Greece 2004, 36, 1509 -1518.
AMA StyleP. Savvaidis, I. Doukas, Th. Hatzigogos, I. N. Tziavos, A. Kiratzi, Z. Roumelioti, A. Savvaidis, N. Theodulidis, G. Drakatos, S. Koutoupes, G. Karantonis, A. Sotiriadis. DATA BASE DEVELOPMENT AND EVALUATION OF EARTHQUAKE DAMAGE REPORTS UNDER THE SEISIMPACT-THES SYSTEM. Bulletin of the Geological Society of Greece. 2004; 36 (3):1509-1518.
Chicago/Turabian StyleP. Savvaidis; I. Doukas; Th. Hatzigogos; I. N. Tziavos; A. Kiratzi; Z. Roumelioti; A. Savvaidis; N. Theodulidis; G. Drakatos; S. Koutoupes; G. Karantonis; A. Sotiriadis. 2004. "DATA BASE DEVELOPMENT AND EVALUATION OF EARTHQUAKE DAMAGE REPORTS UNDER THE SEISIMPACT-THES SYSTEM." Bulletin of the Geological Society of Greece 36, no. 3: 1509-1518.
In the framework of the "SEISIMPACT-THES" project (Koutoupes et al., 2004; Savvaidis et al., 2004) a GIS database has been designed to include information on a wide range of components related to seismic risk within the broader area of the prefecture of Thessaloniki. One of these components refers to the distribution of strong ground motion produced by large earthquakes and the ability of a potential future user of the database to retrieve information regarding the distribution of strong ground motion from past destructive earthquakes in the area of Thessaloniki, as well as relative information for realistic future scenario earthquakes in the same area. The selection of future scenario earthquakes that may affect this urban region of interest is based on a combined review of historical data, previous probabilistic and deterministic hazard assessments, seismotectonic and microseismicity studies, relocated seismicity in northern Greece and the experience gained from worldwide research. In this study we present the results from hypothetical rupture of one fault that is located at the suburbs of the city, the Asvestochori fault. Empirical relations applicable to Greece (Papazachos & Papazachou 2003), as well as seismicity information are combined to determine the dimensions of the scenario earthquake source. Strong ground motion for the selected scenario is simulated using the stochastic method for finite faults (Beresnev and Atkinson, 1997). Uncertainties due to unknown parameters such as the rupture initiation point and the distribution of slip on the fault plane are taken into account by examining a large number of random scenarios. The average values from these multiple scenarios are then used to compile maps of strong ground motion parameters (e.g. peak ground acceleration and spectral acceleration). Although the examined scenario earthquake is moderate in size (Mw 5.2), the level of the resulting strong ground motion parameters is indicative of the potential destructiveness of the examined source. Due to the simplicity in the underlying assumptions of the stochastic method, the results of this study are a first-order approximation to the problem of defining expected shaking in the wider area of Thessaloniki. Other strong motion simulation methods of more deterministic character will also be applied for the same purpose in the framework of the SEISIMPACT-THES project.
A. Kiratzi; Z. Roumelioti; Ch. Benetatos; N. Theodulidis; A. Savvaidis; A. Panou; I. N. Tziavos; P. Savvaidis; Th. Hatzigogos; S. Koutoupes; G. Karantonis. SEISIMPACT-THES: A SCENARIO EARTHQUAKE AFFECTING THE BUILT ENVIRONMENT OF THE PREFECTURE OF THESSALONIKI. Bulletin of the Geological Society of Greece 2004, 36, 1412 -1421.
AMA StyleA. Kiratzi, Z. Roumelioti, Ch. Benetatos, N. Theodulidis, A. Savvaidis, A. Panou, I. N. Tziavos, P. Savvaidis, Th. Hatzigogos, S. Koutoupes, G. Karantonis. SEISIMPACT-THES: A SCENARIO EARTHQUAKE AFFECTING THE BUILT ENVIRONMENT OF THE PREFECTURE OF THESSALONIKI. Bulletin of the Geological Society of Greece. 2004; 36 (3):1412-1421.
Chicago/Turabian StyleA. Kiratzi; Z. Roumelioti; Ch. Benetatos; N. Theodulidis; A. Savvaidis; A. Panou; I. N. Tziavos; P. Savvaidis; Th. Hatzigogos; S. Koutoupes; G. Karantonis. 2004. "SEISIMPACT-THES: A SCENARIO EARTHQUAKE AFFECTING THE BUILT ENVIRONMENT OF THE PREFECTURE OF THESSALONIKI." Bulletin of the Geological Society of Greece 36, no. 3: 1412-1421.
G. P. Tsotsos; P. D. Savvaidis. Identification of Unidentified Historical Sites in Macedonia with the Aid of a Comparison of Ptolemy's and Present-Day Coordinates. The Cartographic Journal 2003, 40, 235 -242.
AMA StyleG. P. Tsotsos, P. D. Savvaidis. Identification of Unidentified Historical Sites in Macedonia with the Aid of a Comparison of Ptolemy's and Present-Day Coordinates. The Cartographic Journal. 2003; 40 (3):235-242.
Chicago/Turabian StyleG. P. Tsotsos; P. D. Savvaidis. 2003. "Identification of Unidentified Historical Sites in Macedonia with the Aid of a Comparison of Ptolemy's and Present-Day Coordinates." The Cartographic Journal 40, no. 3: 235-242.
I.M. Ifadis; P. Savvaidis. Space to earth geodetic observations: approaching the atmospheric effect. Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy 2001, 26, 195 -200.
AMA StyleI.M. Ifadis, P. Savvaidis. Space to earth geodetic observations: approaching the atmospheric effect. Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy. 2001; 26 (3):195-200.
Chicago/Turabian StyleI.M. Ifadis; P. Savvaidis. 2001. "Space to earth geodetic observations: approaching the atmospheric effect." Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy 26, no. 3: 195-200.