Demetrios E Tsesmelis

Hellenic Open University · School of Applied Arts and Sustainable Design

Η ξηρασία είναι ένα επαναλαμβανόμενο φυσικό φαινόμενο με σημαντικές κοινωνικοοικονομικές και περιβαλλοντικές επιπτώσεις. Η ικανότητα ακριβούς χαρτογράφησης και παρακολούθησης των συνθηκών ξηρασίας είναι ζωτικής σημασίας για την αποτελεσματική διαχείριση των υδατικών πόρων και τις στρατηγικές μετριασμού. Η παρούσα μελέτη αποσκοπεί στη χαρτογράφηση τ...

Floods are among the most catastrophic natural events worldwide that affect human and animal life, properties, infrastructure, the environment and crops. Greece has recorded a large number of historical floods followed by a significant impact on several types of land use/cover that resulted in a high economic cost for compensation and/or restoratio...

In recent decades, a critical factor that policy makers have taken into account when assessing the environment is climate change. This global natural process has already caused many problems in the natural and man-made environment. In the future, these problems are expected to multiply and become more severe. As a result, there will be much more pr...

The ever-increasing need for water, the alteration in the climate, and its observed changes over recent years have triggered a lot of research studies associated with the phenomenon of drought. Within the wider geographical region of the Mediterranean, the relevant scientific subject seems to be of great interest, since it is undoubtedly related to...

Floods are natural hazards with negative environmental and socioeconomic impacts at a local and regional level. In addition to human lives, facilities, and infrastructure, flooding is a potential threat to archaeological sites, with all the implications for the cultural heritage of each country. Technological developments of recent years, particula...

The study aims to evaluate the Knowledge, Attitude and Perception (KAP) of different societal groups concerning the implementation of targeted community-based mosquito surveillance and control interventions in different citizenship regimes. Targeted surveys were carried out within Malakasa camp for migrants and refugees, neighboring residential are...

Decomposition Analysis is widely applied to break down the total energy demand into components linked to factors, describing how energy changes occur and how the energy consumption mechanism works. The study analyzes worldwide energy trends and driving factors over the years 1990 to 2014. In Index Decomposition Analysis on a regional scale, we exam...

Natural resources degradation poses multiple challenges, particularly to environmental and economic processes. It is usually difficult to identify the degree of degradation and the critical vulnerability values in the affected systems. Thus, among other tools, indices (composite indicators) may also describe these complex systems or phenomena. In t...

The scope of the present research is to assess drought events using the Standardized Precipitation Index (SPI), which can provide accurate results of drought features on a spatiotemporal scale for Greece. The climate in Greece is a typical northern Mediterranean, with most of the rainfall events noted throughout the period between November and Apri...

Economic growth and energy consumed is critical for sustainable global development. In this paper, an extended Vector version of the commonly used Decoupling Index De of energy elasticity to Gross Domestic Product (GDP) and Decoupling Ratio of Energy Intensity of GDP are used to investigate decoupling phenomenon for the period 1990 to 2014 in the m...

In Urban Planning (UP), it is necessary to take under serious consideration the inhibitors of the spread of a settlement in a specific direction. This means that all those parameters for which serious problems may arise in the future should be considered. Among these parameters are geo-hazards, such as floods, landslides, mud movement, etc. This st...

Droughts are mainly caused by rainfall deficiencies and high evapotranspiration rates. This article introduces a Factual Drought Index (FDI) as a composite index, based on precipitation and potential evapotranspiration (PET). Its innovation lies in the fact that it does not consider the total PET, but only the amount of PET that exceeds or falls be...

Natural resources are gradually coming under continuous and increasing pressure due to anthropogenic interventions and climate variabilities. The result of these pressures is reflected in the sustainability of natural resources. Significant scientific efforts during the recent years focus on mitigating the effects of these pressures and on increasi...

The Environmentally Sensitive Areas (ESA) Index estimates a region's vulnerability to desertification through the analysis of various parameters, such as soil, geology, vegetation, climate, and anthropogenic activities. Each of these parameters is categorized and every factor presents its own weightings for each category. ESAI index is divided into...

Human activities and climate change constitute the contemporary catalyst for natural processes and their impacts, i.e., geo-environmental hazards. Globally, natural catastrophic phenomena and hazards, such as drought, soil erosion, quantitative and qualitative degradation of groundwater , frost, flooding, sea level rise, etc., are intensified by an...

The questions of scale, limit, and areal extent are central points for any drought assessment effort. Drought indices, such as the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), are assisting to demarcate drought characteristics and spatial extent. The current approach utilizes the E-OBS g...

The terms ‘resilience’ and ‘vulnerability’ have been widely used, with multiple interpretations in a plethora of disciplines. Such a variety may easily become confusing, and could create misconceptions among the different users. Policy makers who are bound to make decisions in key spatial and temporal points may especially suffer from these misconc...

The Humanitarian Agents (HAs), are among the first entities dealing with the impacts of natural and man-made disasters. This is more than essential in areas, where the National governments and associated economies are either overwhelmed to respond or unprepared to act. Under such pressing conditions, the agents, as any other similar entity, depend...

Desertification constantly and diachronically manifested itself as one of the most critical environmental issues to be confronted and mitigated by society. This work presents the development of a land desertification risk Expert System (ES) for assessing the application of different land management practices by utilizing indicators through a desert...

The degradation of natural resources at an intense rate creates serious problems in the environmental systems particularly with the compounding effects of climatic vagaries and changes. On the one hand, desertification is a crucial universal, mostly an anthropogenic environmental issue affecting soils all over the world. On the other hand, drought...

Drought is a complex natural hazard with its adverse multifaceted impacts cascading in every physical and human system. The vulnerability magnitude of various areas to drought mostly depends on their exposure to water deficiency, the existing water management policy framework and its implementation. The Standardized Drought Vulnerability Index (SDV...

Indices are used for representing complex phenomena; however, concerns usually arise regarding their objectivity and reliability, particularly dealing with their uncertainties during the development process. The current overarching objective is to reveal the significance of employing different weighting techniques in the application of the Standard...

Among the vital economic sectors that compete for the scarce water resources in Greece as well as the Mediterranean area, agriculture holds a special position. Agriculture has a dominant role in sustaining the growth of rural areas and at the same time represents the major water consumer. In order to tackle the aforementioned issues, efficient wate...

Η παρούσα διδακτορική εργασία έχει ως τομέα μελέτης την Ολοκληρωμένη Διαχείριση των Υδατικών Πόρων (ΟΔΥΠ), βάσει των αρχών της οποίας δημιουργήθηκε ένα εργαλείο (δείκτης) για την αναγνώριση των ξηρασιών και των τρωτών περιοχών, καθώς και τη σύνδεση της τρωτότητας στηv ξηρασία και την ερημοποίηση. Η Ελλάδα παρουσιάζει συχνά φαινόμενα ξηρασίας, τυχαί...

In the present study we used ground and satellite meteorological data of the year 2014 from the region of Viotia-Greece. The ground data were obtained from the automatic grass reference evapotranspiration station (AAS) of the Agricultural University of Athens. The satellite data (SAT) cover an area of 0,25 ο x 0,25 ο that includes the AAS. By using...

The current work presents the application of the seasonal Auto Regressive Integrated Moving Average Model (ARIMA) using the Standard Precipitation Index (SPI) as a drought indicator and then depicting the spatial distribution through geo-statistical methods. Greece is very often facing the hazardous impacts of droughts, hence presenting an almost i...

Drought is a complex natural phenomenon that lacks a universally accepted definition, thus it is difficult to confront holistically. Several efforts have been made towards managing the widespread and catastrophic drought impacts. In this quest, the concept of vulnerability to drought seems to offer some significant potential. In the present attempt...

The use of standardised precipitation index (SPI) may lead to an understanding of a droughts magnitude and duration and thus contributing to integrated drought management options. Greece, a semi-arid country, has very often faced the hazardous impacts of droughts. The worst drought on record lasted from 1989 to 1993, and affected all the country, p...

The main premise of the current effort is that the use of a drought index, such as Standardized Precipitation Index (SPI), may lead to a more appropriate understanding of drought duration, magnitude and spatial extent in semi-arid areas like Greece. The importance of the Index may be marked in its simplicity and its ability to identify the beginnin...