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Gabriel MINEA (born July 7, 1980), is a researcher with National Institute of Hydrology and Water Management (Romania) and his educational background is in environmental geography. In 2012 he was awarded his PhD title in geography field, with a background in catchment hydrology from the University of Bucharest. The main research interest lies between runoff process study at hydrologic microscale/runoff plot/hillslope/small catchments (soil moisture, rainfall, runoff at event scale) and statistical analysis of discharge data at temporal scales. Frequent reviewer for international journals. Also, scientific activity was materialized through participation at conferences, workshops, and books, guides and papers publication
The aim of the present study was to explore the correlation between the land-use/land cover change and the flash-flood potential changes in Zăbala catchment (Romania) between 1989 and 2019. In this regard, the efficiency of GIS, remote sensing and machine learning techniques in detecting spatial patterns of the relationship between the two variables was tested. The paper elaborated upon an answer to the increase in flash flooding frequency across the study area and across the earth due to the occurred land-use/land-cover changes, as well as due to the present climate change, which determined the multiplication of extreme meteorological phenomena. In order to reach the above-mentioned purpose, two land-uses/land-covers (for 1989 and 2019) were obtained using Landsat image processing and were included in a relative evolution indicator (total relative difference-synthetic dynamic land-use index), aggregated at a grid-cell level of 1 km2. The assessment of runoff potential was made with a multilayer perceptron (MLP) neural network, which was trained for 1989 and 2019 with the help of 10 flash-flood predictors, 127 flash-flood locations, and 127 non-flash-flood locations. For the year 1989, the high and very high surface runoff potential covered around 34% of the study area, while for 2019, the same values accounted for approximately 46%. The MLP models performed very well, the area under curve (AUC) values being higher than 0.837. Finally, the land-use/land-cover change indicator, as well as the relative evolution of the flash flood potential index, was included in a geographically weighted regression (GWR). The results of the GWR highlights that high values of the Pearson coefficient (r) occupied around 17.4% of the study area. Therefore, in these areas of the Zăbala river catchment, the land-use/land-cover changes were highly correlated with the changes that occurred in flash-flood potential.
Romulus Costache; Quoc Bao Pham; Ema Corodescu-Roșca; Cătălin Cîmpianu; Haoyuan Hong; Nguyen Thi Thuy Linh; Chow Ming Fai; Ali Najah Ahmed; Matej Vojtek; Siraj Muhammed Pandhiani; Gabriel Minea; Nicu Ciobotaru; Mihnea Cristian Popa; Daniel Constantin Diaconu; Binh Thai Pham. Using GIS, Remote Sensing, and Machine Learning to Highlight the Correlation between the Land-Use/Land-Cover Changes and Flash-Flood Potential. Remote Sensing 2020, 12, 1422 .
AMA StyleRomulus Costache, Quoc Bao Pham, Ema Corodescu-Roșca, Cătălin Cîmpianu, Haoyuan Hong, Nguyen Thi Thuy Linh, Chow Ming Fai, Ali Najah Ahmed, Matej Vojtek, Siraj Muhammed Pandhiani, Gabriel Minea, Nicu Ciobotaru, Mihnea Cristian Popa, Daniel Constantin Diaconu, Binh Thai Pham. Using GIS, Remote Sensing, and Machine Learning to Highlight the Correlation between the Land-Use/Land-Cover Changes and Flash-Flood Potential. Remote Sensing. 2020; 12 (9):1422.
Chicago/Turabian StyleRomulus Costache; Quoc Bao Pham; Ema Corodescu-Roșca; Cătălin Cîmpianu; Haoyuan Hong; Nguyen Thi Thuy Linh; Chow Ming Fai; Ali Najah Ahmed; Matej Vojtek; Siraj Muhammed Pandhiani; Gabriel Minea; Nicu Ciobotaru; Mihnea Cristian Popa; Daniel Constantin Diaconu; Binh Thai Pham. 2020. "Using GIS, Remote Sensing, and Machine Learning to Highlight the Correlation between the Land-Use/Land-Cover Changes and Flash-Flood Potential." Remote Sensing 12, no. 9: 1422.
The global warming and climate changes determined a considerable increase in the frequency of floods and their related damages. Therefore, the high accuracy prediction of flood susceptible areas plays a key role in flood warnings and risk reduction. The main objective of this study is to propose novel hybridizations of fuzzy Analytical Hierarchy Process (FAHP), Index of Entropy (IoE), and Support Vector Machine (SVM) for predicting the areas susceptible to floods. Buzău river catchment (Romania) was the area on which the present study was focused. In this regard, a database with 205 flooded locations, 205 non-flood locations and 12 flood predictors was established and used to train and validate the flood susceptibility models. The performance of the proposed models was evaluated using the Receiver Operating Characteristic (ROC) Curve and statistical metrics. The results show that all the hybrid models have a high prediction performance and outperform the stand-alone models. Among them, the SVM-IoE model (AUC = 0.979) has the highest performance, followed by the FAHP-IoE (AUC = 0.97), IoE (AUC = 0.969), SVM (AUC = 0.966) and FAHP (AUC = 0.947). These results highlight a very high efficiency of all the applied models. The application of the models mentioned above revealed that a percentage between 12.5% (FPIIoE) and 21.2% (FPIFAHP) of the study area is characterized by high and very high exposure to these hydrological hazards.
Romulus Costache; Mihnea Cristian Popa; Dieu Tien Bui; Daniel Constantin Diaconu; Nicu Ciubotaru; Gabriel Minea; Quoc Bao Pham. Spatial predicting of flood potential areas using novel hybridizations of fuzzy decision-making, bivariate statistics, and machine learning. Journal of Hydrology 2020, 585, 124808 .
AMA StyleRomulus Costache, Mihnea Cristian Popa, Dieu Tien Bui, Daniel Constantin Diaconu, Nicu Ciubotaru, Gabriel Minea, Quoc Bao Pham. Spatial predicting of flood potential areas using novel hybridizations of fuzzy decision-making, bivariate statistics, and machine learning. Journal of Hydrology. 2020; 585 ():124808.
Chicago/Turabian StyleRomulus Costache; Mihnea Cristian Popa; Dieu Tien Bui; Daniel Constantin Diaconu; Nicu Ciubotaru; Gabriel Minea; Quoc Bao Pham. 2020. "Spatial predicting of flood potential areas using novel hybridizations of fuzzy decision-making, bivariate statistics, and machine learning." Journal of Hydrology 585, no. : 124808.
This paper aimed to investigate the dominant runoff processes (DRP’s) at plot-scale in the Curvature Subcarpathians under natural rainfall conditions characteristic for Romania’s temperate environment. The study was based on 32 selected rainfall-runoff events produced during the interval April–September (2014–2017). By comparing water balance on the analyzed Luvisol plots for two types of land use (grassland vs. bare soil), we showed that DRP’s are mostly formed by Hortonian Overland Flow (HOF), 47% vs. 59% respectively. On grassland, HOF is followed by Deep Percolation (DP, 31%) and Fast Subsurface Flow (SSF, 22%), whereas, on bare soil, DP shows a higher percentage (38%) and SSF a lower one (3%), which suggests that the soil-root interface controls the runoff generation. Concerning the relationship between antecedent precipitation and runoff, the study indicated the nonlinearity of the two processes, more obvious on grassland and in drought conditions than on bare soil and in wet conditions (as demonstrated by the higher runoff coefficients). Moreover, the HOF appeared to respond differently to rainfall events on the two plots - slightly longer lag-time, lower discharge and lower volume on grassland - which suggests the hydrologic key role of vegetation in runoff generation processes.
Gabriel Minea; Gabriela Ioana-Toroimac; Gabriela Moroşanu. The dominant runoff processes on grassland versus bare soil hillslopes in a temperate environment - An experimental study. Journal of Hydrology and Hydromechanics 2019, 67, 297 -304.
AMA StyleGabriel Minea, Gabriela Ioana-Toroimac, Gabriela Moroşanu. The dominant runoff processes on grassland versus bare soil hillslopes in a temperate environment - An experimental study. Journal of Hydrology and Hydromechanics. 2019; 67 (4):297-304.
Chicago/Turabian StyleGabriel Minea; Gabriela Ioana-Toroimac; Gabriela Moroşanu. 2019. "The dominant runoff processes on grassland versus bare soil hillslopes in a temperate environment - An experimental study." Journal of Hydrology and Hydromechanics 67, no. 4: 297-304.
Taking into account the well-established influence of hillslopes grasslands on runoff processes, the purpose of this study was to investigate how grasslands can affect the water flow pathways on hillslopes, in drought conditions. This study was performed in experimental grassland at plot-scale (e.g., Festuca pratensis), in temperate humid continental climatic conditions of Curvature Subcarpathians, Romania. The rainfall, evapotranspiration, and soil moisture daily data, respectively 208 rainfall and 16 rainfall-runoff events data measured in grassland hills during the growing season (1 April up to 30 September 2015 and 2016) were used. Our results suggest that a runoff event response in extreme drought conditions occurs on grasslands only if precipitation exceeds the threshold of 31 mm Hortonian overland flow (HOF), while this threshold drops to 17 mm during moderate droughts and up to 8 mm for wet conditions. The rainfall events up to 16 mm proved to be insufficient to completely saturate the soil. Therefore, HOF has only a minor contribution in drought conditions, on grassland and light on bare soil. A complementary and negative effect of grasslands in drought conditions is the water resources suppressing on hillslopes.
Gabriel Minea; Georgiana Tudor; Florentina-Iuliana Stan; Gabriela Ioana-Toroimac; Raluca Zamfir. How can the grasslands under rainfall events modify water balance in drought conditions. Journal of Water and Land Development 2018, 38, 53 -65.
AMA StyleGabriel Minea, Georgiana Tudor, Florentina-Iuliana Stan, Gabriela Ioana-Toroimac, Raluca Zamfir. How can the grasslands under rainfall events modify water balance in drought conditions. Journal of Water and Land Development. 2018; 38 (1):53-65.
Chicago/Turabian StyleGabriel Minea; Georgiana Tudor; Florentina-Iuliana Stan; Gabriela Ioana-Toroimac; Raluca Zamfir. 2018. "How can the grasslands under rainfall events modify water balance in drought conditions." Journal of Water and Land Development 38, no. 1: 53-65.
Geographical studies and environment protection research
Gabriel Minea; Jesús Rodrigo Comino; Gabriela Moroşanu. Playing with water – An introduction to experimental hydrology. Forum geografic 2018, XVII, 56 -65.
AMA StyleGabriel Minea, Jesús Rodrigo Comino, Gabriela Moroşanu. Playing with water – An introduction to experimental hydrology. Forum geografic. 2018; XVII (1):56-65.
Chicago/Turabian StyleGabriel Minea; Jesús Rodrigo Comino; Gabriela Moroşanu. 2018. "Playing with water – An introduction to experimental hydrology." Forum geografic XVII, no. 1: 56-65.
In order to systematically plan river restoration actions at a regional scale, this paper develops a multi-criteria analysis that classifies rivers, based on their priority for hydromorphological restoration. This priority is defined by severe human pressures within the erodible corridor of the river, drastic alteration of the stream channel, and low intensity of river pattern functioning. Based on relevant indicators for three groups of features (human pressures, channel changes, and river functionality), a Hydromorphological Restoration Priority Index (HRPI) was designed. The high values (>66%) of HRPI reflect an urgent need for hydromorphological restoration while low values (<33%) reveal a less immediate necessity for restoration. The proposed methodology was applied on braided sectors of rivers crossing the south-eastern (Curvature) Subcarpathians (Romania). The values of the total HRPI ranged between 21% (Zăbrăuţ River) and almost 44% (Prahova River). According to our results, most of the analyzed sectors have a low need for hydromorphological restoration of the braided pattern, while some have a moderate necessity for restoration. Whereas the Prahova River has the highest HRPI, it should be given priority for restoration at a regional scale, which corresponds to the objectives of River Basin Management Plans for the interval beyond 2021.
Gabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea; Gabriela Adina Moroșanu. Using a multi-criteria analysis to identify rivers with hydromorphological restoration priority: Braided rivers in the south-eastern Subcarpathians (Romania). Science of The Total Environment 2017, 599-600, 700 -709.
AMA StyleGabriela Ioana-Toroimac, Liliana Zaharia, Gabriel Minea, Gabriela Adina Moroșanu. Using a multi-criteria analysis to identify rivers with hydromorphological restoration priority: Braided rivers in the south-eastern Subcarpathians (Romania). Science of The Total Environment. 2017; 599-600 ():700-709.
Chicago/Turabian StyleGabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea; Gabriela Adina Moroșanu. 2017. "Using a multi-criteria analysis to identify rivers with hydromorphological restoration priority: Braided rivers in the south-eastern Subcarpathians (Romania)." Science of The Total Environment 599-600, no. : 700-709.
Geographical studies and environment protection research
Gabriel Minea; Mihaela Iliescu; Florin Dedu. Temporal rainfall properties at events scale in the Curvature Subcarpathians (Romania). Forum geografic 2016, XV, 115 -123.
AMA StyleGabriel Minea, Mihaela Iliescu, Florin Dedu. Temporal rainfall properties at events scale in the Curvature Subcarpathians (Romania). Forum geografic. 2016; XV (Suppl. 2):115-123.
Chicago/Turabian StyleGabriel Minea; Mihaela Iliescu; Florin Dedu. 2016. "Temporal rainfall properties at events scale in the Curvature Subcarpathians (Romania)." Forum geografic XV, no. Suppl. 2: 115-123.
Geographical studies and environment protection research
Gabriel Minea; Gianina Neculau; João Pedroso De Lima. A Special Issue: Hydrological Behaviour in Small Basins Under Changing Conditions. Forum geografic 2016, XV, 7 -11.
AMA StyleGabriel Minea, Gianina Neculau, João Pedroso De Lima. A Special Issue: Hydrological Behaviour in Small Basins Under Changing Conditions. Forum geografic. 2016; XV (Suppl. 2):7-11.
Chicago/Turabian StyleGabriel Minea; Gianina Neculau; João Pedroso De Lima. 2016. "A Special Issue: Hydrological Behaviour in Small Basins Under Changing Conditions." Forum geografic XV, no. Suppl. 2: 7-11.
The objective of this paper was to experimentally investigate the hydrological effect of land use on overland flow at micro-scale. The research was based on field experiments made with stationary and expeditionary measurements on runoff plots. Plots are located in the Curvature Subcarpathians, form part of the Aldeni Experimental Basin (Romania) and cover an area of 80 m2. The land is covered with perennial grass and bare soil. The experiments in this field were performed under natural and simulated rainfalls. The plots data (rainfall and discharges) obtained during the experiments conducted in the warm semester (IV–IX) and one artificial rainfall (1 mm·min−1) were used. Significant variations in hydrological responses to rainfall rates were identified for the two land uses. On average, overland flow parameters on runoff plots covered with grasses were reduced to maximum 28% for discharges and to 50% for volumes while in the case of simulated rainfalls, the runoff rates were significantly increased on the bare soil plot. Grasses have a very important function as they cover and protect the soil and slow down the overland flow.
Gabriel Minea; Gabriela Ioana-Toroimac. Land use impact on overland flow: micro-scale field experimental analysis. Journal of Water and Land Development 2016, 29, 67 -74.
AMA StyleGabriel Minea, Gabriela Ioana-Toroimac. Land use impact on overland flow: micro-scale field experimental analysis. Journal of Water and Land Development. 2016; 29 (1):67-74.
Chicago/Turabian StyleGabriel Minea; Gabriela Ioana-Toroimac. 2016. "Land use impact on overland flow: micro-scale field experimental analysis." Journal of Water and Land Development 29, no. 1: 67-74.
The objective of this chapter is to highlight the seasonal statistical variability of rainfalls in Danube Delta and Dobrogea Tableland (Romania), considering the extreme and outliers values. The geomorphological and evaporimetric features of this region are also mentioned. Area of study is a complex geographical region, with two major units: the Dobrogea Tableland and the Danube Delta spread over 14,695 sq. km in the south-eastern part of Romania. The outcomes show that the minimum and maximum values of the lower quartile median and of the upper quartile median with the highest values occur in summer. The lowest values occur for all the indicators during winter and there are intermediate values for all indicators during autumn and spring. Regarding the seasonal variability of rainfalls, it has a mosaic distribution of the outliers and extreme values. The extreme values record a small number of values, both in autumn and summer. The maximum number of extreme values is during spring and winter. The drought is amplified by evaporation from water surface in summer.
Gabriel Minea; Georgeta Bandoc; Gianina Neculau; And Gianina Neculau. Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta. Civil and Environmental Engineering 2016, 311 -323.
AMA StyleGabriel Minea, Georgeta Bandoc, Gianina Neculau, And Gianina Neculau. Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta. Civil and Environmental Engineering. 2016; ():311-323.
Chicago/Turabian StyleGabriel Minea; Georgeta Bandoc; Gianina Neculau; And Gianina Neculau. 2016. "Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta." Civil and Environmental Engineering , no. : 311-323.
The objectives of this article were: to test the hydrometric accuracy of some water level variation measuring and recording devices using a metal measuring tank with weir, and to automatically determine runoff intensities and elements. These field tests were performed in order to ensure high accuracy and low uncertainty of studies at hydrological micro-scale (plot scale). Hydrometric tests targeted two level measurement conditions: (i) rise and storage - without overflowing, volumetric measurement V= f (H); and (ii) rise and overflowing, weir measurement Q = f (H). Hydrometric accuracy was evaluated by comparing the measured and recorded level using three instruments with a tell-tale level. This field experiment was conducted in Voineşti Experimental Basin, belonging to the National Institute of Hydrology and Water Management. Levels series data were processed with the software application ParExp v1, in order to automatically convert them into discharges (Q). Hydrometric and hydrological test results highlighted certain aspects. The accuracy estimated for water fluctuation measurement and recording instruments in a weir water tank, for both level measurement conditions revealed accuracy errors (insufficient accuracy) when the runoff hydraulics was changed (storage Qacum ÷ overflowing Qdev). To remedy such instrumental deficiencies, a metrological control shall be performed under specific operational conditions (e.g., water tank) in order to meet increasing needs for high quality hydrological data. The hydrological data processing using the ParExp v1 software application, at the junction of specific “rise and storage” and “rise and overflowing” flows indicated a temporal error (delay). The user may remedy this error by eliminating data from the Qacum-Qdev junction range until reaching the maximum/stabilized level.Finally, we estimate that through the improvement of some technical elements, hydrological data obtained at a micro-scale level can be used for hydrological models of calibration.
Gabriel Minea; Mary-Jeanne Adler; Georgiana Pătru. A Hydrometric and Hydrological Approach Test at Microscale. Procedia Environmental Sciences 2016, 32, 275 -280.
AMA StyleGabriel Minea, Mary-Jeanne Adler, Georgiana Pătru. A Hydrometric and Hydrological Approach Test at Microscale. Procedia Environmental Sciences. 2016; 32 ():275-280.
Chicago/Turabian StyleGabriel Minea; Mary-Jeanne Adler; Georgiana Pătru. 2016. "A Hydrometric and Hydrological Approach Test at Microscale." Procedia Environmental Sciences 32, no. : 275-280.
The paper (communication) presents an overview of hydrologic field experiments at micro-scale in Romania. In order to experimentally investigate micro (plot)-scale hydrological impact of soil erosion, the National Institute of Hydrology and Water Management founded Voineşti Experimental Basin (VES) in 1964 and the Aldeni Experimental Basins (AEB) in 1984. AEB and VES are located in the Curvature Subcarpathians. Experimental plots are organized in a double systems and have an area of 80 m2 (runoff plots) at AEB and 300 m2 (water balance plots) at VES. Land use of plot: first plot ”grass-land” is covered with perennial grass and second plot (control) consists in ”bare soil”. Over the latter one, the soil is hoeing, which results in a greater development of infiltration than in the first plot. Experimental investigations at micro-scale are aimed towards determining the parameters of the water balance equation, during natural and artificial rainfalls, researching of flows and soil erosion processes on experimental plots, extrapolating relations involving runoff coefficients from a small scale to medium scale. Nowadays, the latest evolutions in data acquisition and transmission equipment are represented by sensors (such as: sensors to determinate the soil moisture content). Exploitation and dissemination of hydrologic data is accomplished by research themes/projects, year-books of basic data and papers.
Gabriel Minea; Gabriela A. Moroşanu. Micro-scale hydrological field experiments in Romania. Open Geosciences 2016, 8, 1 .
AMA StyleGabriel Minea, Gabriela A. Moroşanu. Micro-scale hydrological field experiments in Romania. Open Geosciences. 2016; 8 (1):1.
Chicago/Turabian StyleGabriel Minea; Gabriela A. Moroşanu. 2016. "Micro-scale hydrological field experiments in Romania." Open Geosciences 8, no. 1: 1.
Flood risk assessment is an important component of risk management. Given this context, this paper aims to identify and map areas with high potential for flash-floods and flooding occurrence, at different spatial scales (from catchment to local scale), in order to estimate the flood/flooding vulnerability. The paper is based on three main methods, which were applied in the Slănic River catchment (427 km2), located in the external curvature region of the Romanian Carpathians: (i) statistical analyses; (ii) determination and mapping of some indices to assess the flash-flood and flooding potential (FFPI and respectively FPI) and (iii) hydraulic modelling. The data used mainly include hydrological statistics (maximum monthly and annual discharges, flood-related data) and spatial data on catchment geographical characteristics (hypsometry, geology, soils, land use) obtained or derived from various sources (maps, aerial images, digital databases, field measurements) which were integrated into the GIS environment. The aforementioned methods helped to (i) highlight specificities of floods in the Slănic catchment (magnitude, frequency, flood waves characteristics); (ii) identify areas with high potential for flash-floods and flooding at the catchment spatial scale; (iii) assess the structural vulnerability in the Cernăteşti village, by simulating flood-prone areas for flood peaks with exceedance probability of 1%, 5% and 10%. The results could lead to a better knowledge and understanding of flood characteristics in the study area, in order to mitigate the flood risk through a more effective management, both at the catchment scale, as well as local scale (in the Cernăteşti village).
Liliana Zaharia; Romulus Costache; Remus Prăvălie; Gabriel Minea. Assessment and mapping of flood potential in the Slănic catchment in Romania. Journal of Earth System Science 2015, 124, 1311 -1324.
AMA StyleLiliana Zaharia, Romulus Costache, Remus Prăvălie, Gabriel Minea. Assessment and mapping of flood potential in the Slănic catchment in Romania. Journal of Earth System Science. 2015; 124 (6):1311-1324.
Chicago/Turabian StyleLiliana Zaharia; Romulus Costache; Remus Prăvălie; Gabriel Minea. 2015. "Assessment and mapping of flood potential in the Slănic catchment in Romania." Journal of Earth System Science 124, no. 6: 1311-1324.
River morphological quality assessment, derived from quantification of human pressures as well as river channel alteration, is a demand of the Water Framework Directive (WFD) in terms of integrating hydromorphological elements in defining ecological status. Our study’s aim is to contribute to the hydromorphological evaluation by proposing indicators and separating classes, based on a revisited Morphological Quality Index (rMQI) protocol. The rMQI is based on 12 indicators of human pressures, 10 indicators of channel form adjustments, and 11 indicators of functionality. The rMQI scoring system allows for the quantification of changes when compared to reference conditions, be they undisturbed or nearly undisturbed by human interventions, with absent channel adjustments and a functioning natural river style. We used the lower, meandering sector of the Prahova River to demonstrate our assessment methodology. The Lower Prahova River suffers from a minor local intervention and a diminishing intensity of fluvial processes specific to a meandering style. Meanders geometry was affected by significant changes that included a decrease in the radius of curvature, width and width–to–mean–depth ratio. We concluded that the Lower Prahova River has a good morphological quality, which is rated as second class on a scale of five levels, from natural to severely modified. We recommend an improvement in the hydromorphological evaluation protocol in Romania by additional indicators for morphological alterations specific to each channel pattern.
Gabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea. Using Pressure and Alteration Indicators to Assess River Morphological Quality: Case Study of the Prahova River (Romania). Water 2015, 7, 2971 -2989.
AMA StyleGabriela Ioana-Toroimac, Liliana Zaharia, Gabriel Minea. Using Pressure and Alteration Indicators to Assess River Morphological Quality: Case Study of the Prahova River (Romania). Water. 2015; 7 (12):2971-2989.
Chicago/Turabian StyleGabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea. 2015. "Using Pressure and Alteration Indicators to Assess River Morphological Quality: Case Study of the Prahova River (Romania)." Water 7, no. 12: 2971-2989.
The objective of this chapter is to highlight the seasonal statistical variability of rainfalls in Danube Delta and Dobrogea Tableland (Romania), considering the extreme and outliers values. The geomorphological and evaporimetric features of this region are also mentioned. Area of study is a complex geographical region, with two major units: the Dobrogea Tableland and the Danube Delta spread over 14,695 sq. km in the south-eastern part of Romania. The outcomes show that the minimum and maximum values of the lower quartile median and of the upper quartile median with the highest values occur in summer. The lowest values occur for all the indicators during winter and there are intermediate values for all indicators during autumn and spring. Regarding the seasonal variability of rainfalls, it has a mosaic distribution of the outliers and extreme values. The extreme values record a small number of values, both in autumn and summer. The maximum number of extreme values is during spring and winter. The drought is amplified by evaporation from water surface in summer.
Gabriel Minea; Georgeta Bandoc; Gianina Neculau; Carmen Maftei. Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta. Extreme Weather and Impacts of Climate Change on Water Resources in the Dobrogea Region 2015, 1 -16.
AMA StyleGabriel Minea, Georgeta Bandoc, Gianina Neculau, Carmen Maftei. Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta. Extreme Weather and Impacts of Climate Change on Water Resources in the Dobrogea Region. 2015; ():1-16.
Chicago/Turabian StyleGabriel Minea; Georgeta Bandoc; Gianina Neculau; Carmen Maftei. 2015. "Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta." Extreme Weather and Impacts of Climate Change on Water Resources in the Dobrogea Region , no. : 1-16.
Gabriel Minea; Gabriela Morosanu. Research of water balance at hydrological micro-scale in the Aldeni experimental basin (Romania). Forum geografic 2014, XIII, 185 -192.
AMA StyleGabriel Minea, Gabriela Morosanu. Research of water balance at hydrological micro-scale in the Aldeni experimental basin (Romania). Forum geografic. 2014; XIII (2):185-192.
Chicago/Turabian StyleGabriel Minea; Gabriela Morosanu. 2014. "Research of water balance at hydrological micro-scale in the Aldeni experimental basin (Romania)." Forum geografic XIII, no. 2: 185-192.
Geographical studies and environment protection research
Gabriel Minea; Alina Barbulescu. Statistical assessing of hydrological alteration of Buzău River induced by Siriu Dam (Romania). Forum geografic 2014, XIII, 50 -58.
AMA StyleGabriel Minea, Alina Barbulescu. Statistical assessing of hydrological alteration of Buzău River induced by Siriu Dam (Romania). Forum geografic. 2014; XIII (1):50-58.
Chicago/Turabian StyleGabriel Minea; Alina Barbulescu. 2014. "Statistical assessing of hydrological alteration of Buzău River induced by Siriu Dam (Romania)." Forum geografic XIII, no. 1: 50-58.
The purpose of this paper is to identify areas with high flash-flood potential based on an evaluation of physiographic factors controlling the formation of surface runoff. The research method relies on the use of the Flash Flood Potential Index (FFPI), which incorporates physiographic characteristics from the catchment (terrain slope, profile curvature, land use and soil texture). The spatial distribution of the physiographic factors (which contribute to the creation, control and concentration within the drainage network of the overland flow) and the classified zoning of areas according to their hydrological response were achieved with GIS techniques. The results obtained show that physiographic factors on 227 sq km (29%) favor surface runoff on slopes and its localization towards the drainage network. Notably, the highest values of FFPI belong to the lower part of the catchment, where high human population density can be found, reflecting an increased vulnerability to floods and inundations of this area.
Gabriel Minea. Assessment of the flash flood potential of Bâsca River Catchment (Romania) based on physiographic factors. Open Geosciences 2013, 5, 344 -353.
AMA StyleGabriel Minea. Assessment of the flash flood potential of Bâsca River Catchment (Romania) based on physiographic factors. Open Geosciences. 2013; 5 (3):344-353.
Chicago/Turabian StyleGabriel Minea. 2013. "Assessment of the flash flood potential of Bâsca River Catchment (Romania) based on physiographic factors." Open Geosciences 5, no. 3: 344-353.
In the context of Water Framework Directive, we intend to develop a hydromorphological typology oriented toward the stability of river channels. Based on recent topographic profiles and on the maps drawn in the late 1970s, several parameters of the bankfull stage are computed: the ratio between the maximum depth and the height of the lower bank, the ratio between the channel width and its mean depth, the river competence, and the specific stream power. This methodology is applied for 32 cross profiles in the perimeter of the gauging stations lying within the Ialomiţa and Buzău watersheds. In the case of our study area, three types of channels are distinguished, each showing a different stability under the present conditions: unstable channels susceptible to evolve laterally and vertically; unstable channels susceptible to evolve sideways; and moderately unstable channels. Each of these types includes sub-types differentiated by river competence and sub-sub-types described by channel pattern and characterized by specific stream power. The study confirms the idea that the sinuous channels of the Carpathian streams and the braided channels specific to the Sub-Carpathians and piedmont plains are susceptible to evolve rapidly, whereas the meandering channels belonging to the lowlands of the Romanian Plain have a slower evolution. Beyond this overall picture, the typology leaves room for identifying some particularities due especially to human interventions. Therefore, in perspective, the analysis of hydromorphological features needs to rely also on historical studies
Gabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea; Răzvan Zarea; Mihaela Borcan. Channel Typology Based on Stability Criteria. Case Study: Ialomiţa and Buzău Watersheds (Romania). Procedia Environmental Sciences 2012, 14, 177 -187.
AMA StyleGabriela Ioana-Toroimac, Liliana Zaharia, Gabriel Minea, Răzvan Zarea, Mihaela Borcan. Channel Typology Based on Stability Criteria. Case Study: Ialomiţa and Buzău Watersheds (Romania). Procedia Environmental Sciences. 2012; 14 ():177-187.
Chicago/Turabian StyleGabriela Ioana-Toroimac; Liliana Zaharia; Gabriel Minea; Răzvan Zarea; Mihaela Borcan. 2012. "Channel Typology Based on Stability Criteria. Case Study: Ialomiţa and Buzău Watersheds (Romania)." Procedia Environmental Sciences 14, no. : 177-187.
Geographical studies and environment protection research
Gabriel Minea; Liliana Zaharia. Structural and Non-Structural Measures for Flood Risk Mitigation in the Bâsca River Catchment (Romania). Forum geografic 2011, X, 157 -166.
AMA StyleGabriel Minea, Liliana Zaharia. Structural and Non-Structural Measures for Flood Risk Mitigation in the Bâsca River Catchment (Romania). Forum geografic. 2011; X (1):157-166.
Chicago/Turabian StyleGabriel Minea; Liliana Zaharia. 2011. "Structural and Non-Structural Measures for Flood Risk Mitigation in the Bâsca River Catchment (Romania)." Forum geografic X, no. 1: 157-166.