Alexandru Nedelea

Alexandru Nedelea
University of Bucharest | Unibuc · Faculty of Geography

PhD

About

45
Publications
8,990
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257
Citations
Citations since 2016
19 Research Items
215 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050

Publications

Publications (45)
Preprint
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Floods are the most widespread hazard globally and have a significant impact on local communities in terms of material and loss of life. Flood risk analysis is a complex process that needs to be addressed both physically and socially. The study provides a method for identifying the risk using Goegraphical Informational Systems techniques. Each indi...
Article
Full-text available
The sustainable implementation of highway projects requires a sensitivity analysis of the terrain and all of its components that have a direct influence on road design, construction and operation. The result of this inquiry involving GIS techniques and methods regarding environmental and economic factors helps in choosing the optimal road route, in...
Article
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Changes in land use and agricultural landscapes are primarily the result of socio-political and economic changes. This research is based on the analysis of old maps, pertaining to different historical periods, aiming to capture the dynamics of the landscape in the Central Bărăgan Plain. The cartographic materials used have the Map of Southern Roman...
Conference Paper
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Dynamics of mining sites are usually subjected to environmental and anthropogenic changes that translate into erosion in the long term and sudden changes in local topography at local and regional scales due to the setup of exploitation roads, dumpsites, backfilled or mined out zones. Assessing risks in relation to morphometric characteristics of mi...
Article
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This paper presents the correlation between the geomorphological features of the Slănicul de Buzău Valley and the geological ones, such as the tectonic regime and the type of rocks. We are pointing out that the geomorphology of the valley and the change of the flow direction are linked to the type of rocks and tectonic elements of traversed geologi...
Article
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This paper aims to present how education for geoheritage and geodiversity should take place both in the school curriculum and in extracurricular activities at all levels of Romanian education (middle school, high school and university). The research method consisted in applying two questionnaires (10 questions, most with answers to choose from) bot...
Article
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This paper focuses on the environmental conflicts induced by insufficient continuous snow cover on the ski areas in Romania. The case study aims envisions the area of Southern Carpathians, Latoriței Mountains, belonging to the group of Parâng Mountains. The area chosen to develop and improve the artificial snow system was conducted for in the propo...
Article
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Rockfalls represents a sudden, extremely important geomorphological hazard and may become a threat for people’s life, as well as goods and transport. The present study aims to assess the rock surfaces stability in relation to a series of variables: resistance of intact rock determined in the field by geotechnical test—the SCS value obtained with Sc...
Article
This paper intends to evaluate the most important geomorphosites in the Cozia Massif (Southern Carpathians) area and the geomorphological hazards that can affect and damage them. The methodology used for the evaluation stage is based on a method elaborated by Reynard et al. in Geoheritage 8:43–60, 2016, and additionally on other approaches built by...
Article
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In the mountain area, the relief is the element of the geographical environment with the highest degree of tourist attractiveness, due to the variety and spectacularity of its forms and processes. The geotourism potential of the Cozia Massif is due to the evolution of the relief, conditioned by lithology, tectonics and climate. The cumulative actio...
Article
Soil erosion is an extremely important geomorphological hazard, which, although it does not have immediate negative effects (material damage and loss of life), it can have multiple and serious consequences in the medium and long term. This paper aims to quantify the amount of eroded material according to land use changes by applying a new simplifie...
Preprint
Full-text available
Relief, through altitude, specific landforms and processes, through the morphology of valleys and interfluves, influences the practice of different types of tourism in a given area. It can be considered a factor of favorability or restrictiveness for the development of tourist activities. Restriction is mainly given by the degree of accessibility o...
Article
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The present paper aims at inventorying the geomophosites in Bucharest as well as introducing geotouristic itineraries that take into account the long-time developed high value cultural heritage of the area. The process included several stages: studying Bucharest’s relief and cultural-historical elements with tourist value from existing bibliography...
Chapter
Geomorphosites are landforms that in time have received a certain value due to human perception. This value can be scientific, ecological, aesthetic, cultural-historical and economic. The Southern Carpathians present numerous and various glacial and periglacial geomorphosites. In order to obtain an overall image of this area, the authors calculated...
Article
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The paper emphasizes the methodological steps undertaken in the assessment of floods perception, which was conducted in tree study areas from Romania (Banat Plain, Bend Subcarpathians and Siret river basin). The reasons behind the design of the questionnaire and interview guide are explained, in relation with the research objectives. The research e...
Article
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The floods from the fall of 2013 in the Tecuci Plain were caused by a massive amount of rainfall in a short period of time (150l/sqm in about an hour), which were followed by heavy rains in the following days (September 13th to 14th) combined with the lack of adequate technical works and strong flows on the slopes. In the area, 5 villages from 3 ri...
Article
ABSTRACT: Located in the south-east part of the country, the Dobrogea Plateau is bordered on three sides by the Danube and the Black Sea and appears as an extension of the Northern Moesic Plateau from the south, which is separated from the border state. The total area of the Dobrogea Plateau is 10 350 km2 meaning 4.35% of the country. The character...
Article
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This paper aims at presenting the opinion of the population (and especially of the tourists) about the natural and anthropogenic hazards affecting the geomorphological heritage of the central area of the Bucegi Mts. Our scientific approach is intended to raise the awareness of the authorities and tourists as well with regard to the degradation haza...
Article
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Systemic global environmental changes are manifested in the whole Earth system and represent the global effects of anthropogenic activity on the environment. Global climate changes are included in these global environmental changes. The combined effects of climate change, extreme weather and human alterations of the environment are especially prono...
Article
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Genesis conditions and effects of avalanches. Case studies in representative sectors within Piatra Craiului and Fagars mountains. The present paper aims at investigating the avalanches and their impact on the environment components. Snow avalanches are natural phenomena, which are controlled by the specific features of the mountain realm. They star...
Article
The present work aims to show the way the inventory of geomorphosites may constitute a base in determining the quality and quantity of geomorphodiversity. The key terms, geomorphosite and geomorphodiversity, have been recently introduced in the world specialised literature (after 2000), their concept area has been clarified, but in order to accompl...
Article
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The geopark Buzăului County does not belong to the Geoparks European Network, as there are numerous governmental, legislative and scientific initiatives in this respect. The geopark is situated in the central-south-eastern part of Romania (in Buzau county) and it has a special potential of geological, geomorphological, biogeographical and anthropic...
Article
The geotouristic map is a new type of map which reveals best the connection between the relief and touristic activities. There are several types of geotouristic maps: index, touristic maps, geoscientific maps and interpretative maps. Their elaboration supposes several stages: consulting bibliography and different types of maps (topographic maps at...
Article
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The Sâmbata Valley is located in the north-eastern part of the Fagaras Mts, an area with a varied range of present geomorphologic processes which manifest with different intensities in space and time. The remarkable morphodynamic energy and favourability to erosion processes in the context of overgrazing exploitation and extreme weather events are...
Article
The present topography of the F˘ ag˘ ara Mountains is a snapshot of the long-term evolution that brought about significant alterations of the landscape, and especially of the relief, which has acquired different features depending on the intensity of the relationship between the exogenous and endogenous agents. At present, relief shaping in the stu...
Article
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In the present paper we present a new method of evaluating the geomorphosite. The method is presented by us/ our team and it was tested in the protected area Ponoare. In the first part of the article, we will apply, for the geomorphosites inventorized here, the other methods of evaluation known worldwide, and after that we will evaluate geomorphosi...
Article
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The glacial shaping of mountain areas is accomplished by two processes: exaration (glacial erosion), which produces a series of specific landforms – cirques, glacial troughs, thresholds, shoulders, sheepback rocks, arêtes, saddles etc., and accumulation, which is responsible for moraine formation. Investigations have proven that in Romania the glac...
Article
This article is intended to explain the snow avalanche occurrence, as a natural phenomenon directly influenced by the local natural conditions, for the well-delimited area represented by the Piatra Mica massif, belonging to the Piatra Craiului mountain range (southern Carpathians). In this respect, depending on the factors that may trigger or encou...
Article
Full-text available
The present configuration of the Făgăraş Mountains is a snapshot of the long-term evolution that brought about significant alterations of the landscape, and especially of the relief, which has acquired different features depending on the intensity of the relationship between the exogenous and endogenous agents. Relief shaping in the study area is c...
Article
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This paper aims to present the results of a complex analysis of the morphodynamics of slopes affected by avalanches in Piatra Craiului Massif. The study of avalanches is a current issue of dynamic geomorphology and very little is discussed in the Romanian geographical literature. Although the presence of avalanches has been reported in the Carpathi...
Article
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This paper aims at evaluation of geomorphosites on the Vistea Valley (the Fagaras Mountains). The Fagaras Mountains are emblematic for the Romanian Carpathians as they have the highest altitudes (2544 m), the biggest massiveness and a large range of geomorphosites which were formed by the action of the glaciers. The Vistea Valley is a typical glaci...
Article
Geomorphosites are landforms that have acquired, in time, a certain value (scientific, cultural, aesthetic, ecological and/or economic). This article presents a statistical analysis of the results obtained during our evaluation of geomorphosites, including their associated value in the minds of tourists. The Bucegi Mountains were considered to be a...
Article
This paper explores an issue of maximum importance for the environment, namely the heavy metal pollution in the area of Copsa Mica town, a settlement known worldwide for the high pollution caused by the non-ferrous and chemical plants of its industrial site. Of great significance for this study are also the geographical location of the industrial s...
Article
TEXTURAL ANALYSIS OF THE SEDIMENTS IN THE MAMAIA BAY AUTHOR(S)Diaconeasa, Dănuţ; Marin, Marian; Nedelea, Alexandru; Oprea, Razvan PUB. DATEMay 2010 SOURCEMetalurgia International;May2010 Supplement, p19 SOURCE TYPEAcademic Journal DOC. TYPEArticle ABSTRACTThe study seeks to highlight the quantitative and qualitative features of the deposits belongi...
Article
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The important features of the mountain areas may be synthetically assessed, based on several methods of numerical analysis (a series of indexes) of the ecological potential. In this paper we have analyzed the following indexes: De Martonne's aridity index, continentality index of Gams, hydrothermal index, pluviothermal index and snow index. To achi...
Article
Full-text available
The main issues about relation between climate and relief in the Romanian geomorphological literature follow three directions of research: the description of Pleistocene glacial and Pleistocene-Holocene periglacial landforms in the Carpathians; the direct analysis of climate's role in landform development; the integration of separate works and find...
Article
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Shepherding has been one of the main occupations of the Romanian people, which played an important part in its economic, social and historical life. This activity has been carried on since long ago throughout the Fagaras Mts., in as much as they offer in summertime favorable conditions, which are mirrored by the presence of many sheep herds on the...
Article
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It is therefore the relief in its relationship with petrography. On the valley of the Argeş River, in the mountains sector, the morphology of the area consists of metamorphic rocks and it is often monotonous. The differential erosion creates ridges and grooves parallel to the schistosity. The shales are soft hollows. Marble and gneiss are resistant...
Article
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The Arges corridor lies in the central part of Romania, more exactly in the middle part of the Southern Carpathians range, and consists of three hypsometric steps developing between 1000 and 2500 m. In this area, human activities have induced significant changes beginning with the 19 th century. The most important of these are the massive deforesta...
Article
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The physiognomic complexity as the main characteristics of the Bucegi Mountains landscape is the result of lithology, structure, tectonics and high altitude, which led to the vertical zoning of modelling conditions. There can be separated: the landscape of erosion outliers and the structural plateaus from the alpine area, the landscape of Prahova s...

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