TY  - JOUR
AU  - Blagojević, Borislava
AU  - Mihailović, Vladislava
AU  - Bogojević, Aleksandar
AU  - Plavšić, Jasna
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3150
AB  - Changes in the hydrological regime are widely investigated using a variety of approaches. In this study, we assess changes in annual and seasonal flow characteristics based on a probabilistic representation of the seasonal runoff regime at the daily time scale. The probabilistic seasonal runoff pattern is constructed by determining quantiles from marginal distributions of daily flows for each day within the year. By applying Fourier transformation on the statistics of the daily flow partial series, we obtain smooth periodical functions of distribution parameters over the year and consequently of the quantiles. The main findings are based on the comparison of the dry, average, and wet hydrologic condition zones as defined by the daily flow quantiles of selected probabilities. This analysis was conducted for ten catchments in Serbia by considering changes between two 30-year nonoverlapping periods, 1961–1990 and 1991–2020. It was found that the relative change in runoff volume is the most pronounced in the extreme dry condition zone in the winter season (−33% to 34%). The annual time shift is the largest in the dry and average condition zones, ranging from −11 to 12 days. The applied methodology is not only applicable to the detection of hydrologic change, but could also be used in operational hydrology and extreme flow studies via drought indices such as the Standardized Streamflow Index.
T2  - Water, MDPI
T1  - Detecting annual and seasonal hydrological change using marginal distributions of daily flows
SP  - 2919
VL  - 15
DO  - 10.3390/w15162919
ER  - 

@article{
author = "Blagojević, Borislava and Mihailović, Vladislava and Bogojević, Aleksandar and Plavšić, Jasna",
year = "2023",
abstract = "Changes in the hydrological regime are widely investigated using a variety of approaches. In this study, we assess changes in annual and seasonal flow characteristics based on a probabilistic representation of the seasonal runoff regime at the daily time scale. The probabilistic seasonal runoff pattern is constructed by determining quantiles from marginal distributions of daily flows for each day within the year. By applying Fourier transformation on the statistics of the daily flow partial series, we obtain smooth periodical functions of distribution parameters over the year and consequently of the quantiles. The main findings are based on the comparison of the dry, average, and wet hydrologic condition zones as defined by the daily flow quantiles of selected probabilities. This analysis was conducted for ten catchments in Serbia by considering changes between two 30-year nonoverlapping periods, 1961–1990 and 1991–2020. It was found that the relative change in runoff volume is the most pronounced in the extreme dry condition zone in the winter season (−33% to 34%). The annual time shift is the largest in the dry and average condition zones, ranging from −11 to 12 days. The applied methodology is not only applicable to the detection of hydrologic change, but could also be used in operational hydrology and extreme flow studies via drought indices such as the Standardized Streamflow Index.",
journal = "Water, MDPI",
title = "Detecting annual and seasonal hydrological change using marginal distributions of daily flows",
pages = "2919",
volume = "15",
doi = "10.3390/w15162919"
}

Blagojević, B., Mihailović, V., Bogojević, A.,& Plavšić, J.. (2023). Detecting annual and seasonal hydrological change using marginal distributions of daily flows. in Water, MDPI, 15, 2919.
https://doi.org/10.3390/w15162919

Blagojević B, Mihailović V, Bogojević A, Plavšić J. Detecting annual and seasonal hydrological change using marginal distributions of daily flows. in Water, MDPI. 2023;15:2919.
doi:10.3390/w15162919 .

Blagojević, Borislava, Mihailović, Vladislava, Bogojević, Aleksandar, Plavšić, Jasna, "Detecting annual and seasonal hydrological change using marginal distributions of daily flows" in Water, MDPI, 15 (2023):2919,
https://doi.org/10.3390/w15162919 . .

TY  - JOUR
AU  - Plavšić, Jasna
AU  - Blagojević, Borislava
AU  - Todorović, Andrijana
AU  - Despotović, Jovan
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1051
T2  - Acta Hydrotechnica
T1  - Long-term behaviour of precipitation at three stations in Serbia
EP  - 56
IS  - 50
SP  - 23
VL  - 29
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1051
ER  - 

@article{
author = "Plavšić, Jasna and Blagojević, Borislava and Todorović, Andrijana and Despotović, Jovan",
year = "2016",
journal = "Acta Hydrotechnica",
title = "Long-term behaviour of precipitation at three stations in Serbia",
pages = "56-23",
number = "50",
volume = "29",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1051"
}

Plavšić, J., Blagojević, B., Todorović, A.,& Despotović, J.. (2016). Long-term behaviour of precipitation at three stations in Serbia. in Acta Hydrotechnica, 29(50), 23-56.
https://hdl.handle.net/21.15107/rcub_grafar_1051

Plavšić J, Blagojević B, Todorović A, Despotović J. Long-term behaviour of precipitation at three stations in Serbia. in Acta Hydrotechnica. 2016;29(50):23-56.
https://hdl.handle.net/21.15107/rcub_grafar_1051 .

Plavšić, Jasna, Blagojević, Borislava, Todorović, Andrijana, Despotović, Jovan, "Long-term behaviour of precipitation at three stations in Serbia" in Acta Hydrotechnica, 29, no. 50 (2016):23-56,
https://hdl.handle.net/21.15107/rcub_grafar_1051 .

TY  - JOUR
AU  - Plavšić, Jasna
AU  - Pavlović, Dragutin
AU  - Mihailović, Vladislava
AU  - Blagojević, Borislava
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/761
AB  - Flood flow frequency analysis is performed on the series of hydrological observations. The observations introduce uncertainties in the analysis results, inherited from limited data sets, operational difficulties in high flow measurements, flood flow estimates in the rating curve extrapolation zone, as well as different mechanisms of runoff generation. Difficulties in defining flood flow probabilistic model arise in the presence of outliers (significantly larger or smaller value compared to the remaining data set values). The paper provides an overview of methods for the detection of outliers from traditional practice to the latest research results, as well as procedures for outlier treatment in the further statistical analysis, focusing especially on the recommendations from the recently published Bulletin 17C in the USA. The assumptions about the population, procedures of outlier detection, the treatment of transformed data sets, and potential difficulties in the application are highlighted. Statistical tests and procedures are applied to flood data at 70 hydrological stations in Serbia. Analysis of flood flow frequency in the presence of outliers is performed by the methods of the annual maxima and peaks over threshold (POT). The examples include both upper and lower outliers. Comments are given on the differences in the results from the applied outlier detection and treatment procedures. Recommendations to the practitioners are given in the conclusions in order to reduce uncertainty in the flood flow frequency analysis in the presence of outliers.
AB  - Statistička analiza velikih voda se radi na nizovima hidroloških osmatranja, koja u rezultate ove analize unose neizvesnosti u pogledu ograničene dužine osmatranja, teškoća u merenju vrlo velikih protoka i njihove procene iz zone ekstrapolovanih krivih protoka, kao i zbog različitih mehanizama generisanja oticaja. Definisanje probabilističkog modela velikih voda je otežano i zbog postojanja izuzetaka u nizovima, tj. značajno velikih ili malih vrednosti u odnosu na većinu. U radu se daje pregled postupaka i statističkih testova za otkrivanje izuzetaka od standardnih do najnovijih, kao i načini postupanja sa izuzetnim vrednostima. Najveća pažnja posvećena je otkrivanju i tretmanu donjih izuzetaka, koji u velikoj meri utiču na raspodelu a time i na usvojene računske velike vode. Poseban osvrt je dat na najnovije preporuke iz američkog Biltena 17C. Komentarišu se pretpostavke o raspodeli populacije, procedure testiranja, postupanje sa transformisanim nizovima i ukazuje na moguće poteškoće u primeni. Sama primena testova i procedura prikazana je u praktičnom delu, gde se statistička analiza velikih voda u prisustvu izuzetaka sprovodi za karakteristične primere sa hidroloških stanica u Srbiji na nizovima formiranim metodama godišnjih maksimuma i prekoračenja preko praga. Primeri obuhvataju i gornje i donje izuzetke. Komentarišu se razlike u rezultatima prilikom primene različitih procedura u prisustvu izuzetaka i predlaže niz iskustvenih mera kako bi ocena velikih voda bila što pouzdanija.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Flood flow frequency analysis in the presence of outliers
T1  - Statistička analiza velikih voda u prisustvu izuzetaka
EP  - 17
IS  - 1-3
SP  - 5
VL  - 48
UR  - https://hdl.handle.net/21.15107/rcub_grafar_761
ER  - 

@article{
author = "Plavšić, Jasna and Pavlović, Dragutin and Mihailović, Vladislava and Blagojević, Borislava",
year = "2016",
abstract = "Flood flow frequency analysis is performed on the series of hydrological observations. The observations introduce uncertainties in the analysis results, inherited from limited data sets, operational difficulties in high flow measurements, flood flow estimates in the rating curve extrapolation zone, as well as different mechanisms of runoff generation. Difficulties in defining flood flow probabilistic model arise in the presence of outliers (significantly larger or smaller value compared to the remaining data set values). The paper provides an overview of methods for the detection of outliers from traditional practice to the latest research results, as well as procedures for outlier treatment in the further statistical analysis, focusing especially on the recommendations from the recently published Bulletin 17C in the USA. The assumptions about the population, procedures of outlier detection, the treatment of transformed data sets, and potential difficulties in the application are highlighted. Statistical tests and procedures are applied to flood data at 70 hydrological stations in Serbia. Analysis of flood flow frequency in the presence of outliers is performed by the methods of the annual maxima and peaks over threshold (POT). The examples include both upper and lower outliers. Comments are given on the differences in the results from the applied outlier detection and treatment procedures. Recommendations to the practitioners are given in the conclusions in order to reduce uncertainty in the flood flow frequency analysis in the presence of outliers., Statistička analiza velikih voda se radi na nizovima hidroloških osmatranja, koja u rezultate ove analize unose neizvesnosti u pogledu ograničene dužine osmatranja, teškoća u merenju vrlo velikih protoka i njihove procene iz zone ekstrapolovanih krivih protoka, kao i zbog različitih mehanizama generisanja oticaja. Definisanje probabilističkog modela velikih voda je otežano i zbog postojanja izuzetaka u nizovima, tj. značajno velikih ili malih vrednosti u odnosu na većinu. U radu se daje pregled postupaka i statističkih testova za otkrivanje izuzetaka od standardnih do najnovijih, kao i načini postupanja sa izuzetnim vrednostima. Najveća pažnja posvećena je otkrivanju i tretmanu donjih izuzetaka, koji u velikoj meri utiču na raspodelu a time i na usvojene računske velike vode. Poseban osvrt je dat na najnovije preporuke iz američkog Biltena 17C. Komentarišu se pretpostavke o raspodeli populacije, procedure testiranja, postupanje sa transformisanim nizovima i ukazuje na moguće poteškoće u primeni. Sama primena testova i procedura prikazana je u praktičnom delu, gde se statistička analiza velikih voda u prisustvu izuzetaka sprovodi za karakteristične primere sa hidroloških stanica u Srbiji na nizovima formiranim metodama godišnjih maksimuma i prekoračenja preko praga. Primeri obuhvataju i gornje i donje izuzetke. Komentarišu se razlike u rezultatima prilikom primene različitih procedura u prisustvu izuzetaka i predlaže niz iskustvenih mera kako bi ocena velikih voda bila što pouzdanija.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Flood flow frequency analysis in the presence of outliers, Statistička analiza velikih voda u prisustvu izuzetaka",
pages = "17-5",
number = "1-3",
volume = "48",
url = "https://hdl.handle.net/21.15107/rcub_grafar_761"
}

Plavšić, J., Pavlović, D., Mihailović, V.,& Blagojević, B.. (2016). Flood flow frequency analysis in the presence of outliers. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 48(1-3), 5-17.
https://hdl.handle.net/21.15107/rcub_grafar_761

Plavšić J, Pavlović D, Mihailović V, Blagojević B. Flood flow frequency analysis in the presence of outliers. in Vodoprivreda. 2016;48(1-3):5-17.
https://hdl.handle.net/21.15107/rcub_grafar_761 .

Plavšić, Jasna, Pavlović, Dragutin, Mihailović, Vladislava, Blagojević, Borislava, "Flood flow frequency analysis in the presence of outliers" in Vodoprivreda, 48, no. 1-3 (2016):5-17,
https://hdl.handle.net/21.15107/rcub_grafar_761 .

TY  - CONF
AU  - Blagojević, Borislava
AU  - Mihailović, Vladislava
AU  - Plavšić, Jasna
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1209
AB  - In the hydraulic structures design process, the reliable flood estimation is essential for designing the structure. Statistical analysis of observed flood flows, i.e. the flood frequency analysis is one way to obtain the design flood of a specified probability. The problems that can threaten the credibility of flood estimates are related, among other issues, to the treatment procedure of exceptional values (outliers) in the observed flood flow data sets. In this paper a detection of upper and lower outliers in a series of streamflow annual maxima is performed by the Grubbs and Beck statistical test on 68 hydrological stations in Serbia. The data observation period considered is from the establishment of the stations until 2012. The outlier detection results are compared to the previous results obtained for the data processing period until the year 2006.
PB  - Građevinski fakultet, Subotica
C3  - Međunarodna konferencija Savremena dostignuća u građevinarstvu 25
T1  - Outlier treatment in the flood flow statistical analysis
T1  - Postupanje sa izuzetnim vrednostima u statističkoj analizi velikih voda
EP  - 609
SP  - 603
VL  - 30
DO  - 10.14415/konferencijaGFS2014.081
ER  - 

@conference{
author = "Blagojević, Borislava and Mihailović, Vladislava and Plavšić, Jasna",
year = "2014",
abstract = "In the hydraulic structures design process, the reliable flood estimation is essential for designing the structure. Statistical analysis of observed flood flows, i.e. the flood frequency analysis is one way to obtain the design flood of a specified probability. The problems that can threaten the credibility of flood estimates are related, among other issues, to the treatment procedure of exceptional values (outliers) in the observed flood flow data sets. In this paper a detection of upper and lower outliers in a series of streamflow annual maxima is performed by the Grubbs and Beck statistical test on 68 hydrological stations in Serbia. The data observation period considered is from the establishment of the stations until 2012. The outlier detection results are compared to the previous results obtained for the data processing period until the year 2006.",
publisher = "Građevinski fakultet, Subotica",
journal = "Međunarodna konferencija Savremena dostignuća u građevinarstvu 25",
title = "Outlier treatment in the flood flow statistical analysis, Postupanje sa izuzetnim vrednostima u statističkoj analizi velikih voda",
pages = "609-603",
volume = "30",
doi = "10.14415/konferencijaGFS2014.081"
}

Blagojević, B., Mihailović, V.,& Plavšić, J.. (2014). Outlier treatment in the flood flow statistical analysis. in Međunarodna konferencija Savremena dostignuća u građevinarstvu 25
Građevinski fakultet, Subotica., 30, 603-609.
https://doi.org/10.14415/konferencijaGFS2014.081

Blagojević B, Mihailović V, Plavšić J. Outlier treatment in the flood flow statistical analysis. in Međunarodna konferencija Savremena dostignuća u građevinarstvu 25. 2014;30:603-609.
doi:10.14415/konferencijaGFS2014.081 .

Blagojević, Borislava, Mihailović, Vladislava, Plavšić, Jasna, "Outlier treatment in the flood flow statistical analysis" in Međunarodna konferencija Savremena dostignuća u građevinarstvu 25, 30 (2014):603-609,
https://doi.org/10.14415/konferencijaGFS2014.081 . .

TY  - JOUR
AU  - Blagojević, Borislava
AU  - Mihailović, Vladislava
AU  - Plavšić, Jasna
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/589
AB  - In most developed countries, practices and research results are translated into standards or guidelines for flood flow assessment, usually with the compulsory application in the design and exploitation of hydraulic structures and systems. This paper briefly presents the draft guidelines for flood flow statistical analysis in gauged basins based on methods of statistical hydrology, intended for practitioners in Serbia. It explains the motivation for composing national guidelines and gives insight into contemporary trends in flood flow assessment in a few selected countries. The content of the draft guidelines is shown, as well as the main conclusions of the expanded research in terms of the proposed methodology for detection and handling of exceptional values. The proposed recommendations for modernization of existing, common engineering practices are highlighted. The paper presents the guidelines at the end of the first from three planned research phases, with the primary aim to encourage public debate which, in pair with the professional review, would lead to the adoption of the guidelines.
AB  - U većini razvijenih zemalja, iskustva iz prakse i rezultati istraživanja, pretočeni su u standarde ili preporuke za proračun velikih voda, najčešće sa obaveznom primenom u projektovanju ili eksploataciji hidrotehničkih objekata i sistema. U ovom radu ukratko je prikazan nacrt preporuka za proračun velikih voda na izučenim slivovima metodama statističke hidrologije, koji je namenjen domaćoj stručnoj javnosti. Objašnjena je motivacija za izradu preporuka u Srbiji i dat je uvid u savremene tendencije u standardizaciji proračuna velikih voda u nekoliko odabranih zemalja. Prikazan je sadržaj nacrta preporuka, a priloženi su i glavni zaključci proširenog istraživanja u pogledu predložene metodologije za otkrivanje i postupanje sa izuzetnim vrednostima. Sumirane su predložene konkretne preporuke za osavremenjavanje postojeće, uobičajene inženjerske prakse. U radu se stručnoj javnosti predstavlja predlog teksta preporuka nastao posle prve od tri predviđene faze istraživanja, sa prevashodnim ciljem da podstakne javnu raspravu koja bi, uz stručnu recenziju, dovela do usvajanja preporuka.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Flood frequency analysis at gauged sites: Need for a change in approach
T1  - Statistička analiza velikih voda na profilima hidroloških stanica - potreba za promenom pristupa
EP  - 209
IS  - 1-6
SP  - 199
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_grafar_589
ER  - 

@article{
author = "Blagojević, Borislava and Mihailović, Vladislava and Plavšić, Jasna",
year = "2014",
abstract = "In most developed countries, practices and research results are translated into standards or guidelines for flood flow assessment, usually with the compulsory application in the design and exploitation of hydraulic structures and systems. This paper briefly presents the draft guidelines for flood flow statistical analysis in gauged basins based on methods of statistical hydrology, intended for practitioners in Serbia. It explains the motivation for composing national guidelines and gives insight into contemporary trends in flood flow assessment in a few selected countries. The content of the draft guidelines is shown, as well as the main conclusions of the expanded research in terms of the proposed methodology for detection and handling of exceptional values. The proposed recommendations for modernization of existing, common engineering practices are highlighted. The paper presents the guidelines at the end of the first from three planned research phases, with the primary aim to encourage public debate which, in pair with the professional review, would lead to the adoption of the guidelines., U većini razvijenih zemalja, iskustva iz prakse i rezultati istraživanja, pretočeni su u standarde ili preporuke za proračun velikih voda, najčešće sa obaveznom primenom u projektovanju ili eksploataciji hidrotehničkih objekata i sistema. U ovom radu ukratko je prikazan nacrt preporuka za proračun velikih voda na izučenim slivovima metodama statističke hidrologije, koji je namenjen domaćoj stručnoj javnosti. Objašnjena je motivacija za izradu preporuka u Srbiji i dat je uvid u savremene tendencije u standardizaciji proračuna velikih voda u nekoliko odabranih zemalja. Prikazan je sadržaj nacrta preporuka, a priloženi su i glavni zaključci proširenog istraživanja u pogledu predložene metodologije za otkrivanje i postupanje sa izuzetnim vrednostima. Sumirane su predložene konkretne preporuke za osavremenjavanje postojeće, uobičajene inženjerske prakse. U radu se stručnoj javnosti predstavlja predlog teksta preporuka nastao posle prve od tri predviđene faze istraživanja, sa prevashodnim ciljem da podstakne javnu raspravu koja bi, uz stručnu recenziju, dovela do usvajanja preporuka.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Flood frequency analysis at gauged sites: Need for a change in approach, Statistička analiza velikih voda na profilima hidroloških stanica - potreba za promenom pristupa",
pages = "209-199",
number = "1-6",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_grafar_589"
}

Blagojević, B., Mihailović, V.,& Plavšić, J.. (2014). Flood frequency analysis at gauged sites: Need for a change in approach. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 46(1-6), 199-209.
https://hdl.handle.net/21.15107/rcub_grafar_589

Blagojević B, Mihailović V, Plavšić J. Flood frequency analysis at gauged sites: Need for a change in approach. in Vodoprivreda. 2014;46(1-6):199-209.
https://hdl.handle.net/21.15107/rcub_grafar_589 .

Blagojević, Borislava, Mihailović, Vladislava, Plavšić, Jasna, "Flood frequency analysis at gauged sites: Need for a change in approach" in Vodoprivreda, 46, no. 1-6 (2014):199-209,
https://hdl.handle.net/21.15107/rcub_grafar_589 .

TY  - JOUR
AU  - Blagojević, Borislava
AU  - Plavšić, Jasna
PY  - 2013
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/528
AB  - Revision of existing methodologies for generating monthly-flow series at ungauged basins based on multivariate nonlinear correlation has led to a simple two-parameter model. While the existing methodology used hydrological, meteorological and geomorphologic input data, the proposed model requires hydrological and geomorphologic input data only. The proposed methodology requires formation of separate pools of donor catchments for model parameter estimates. The proposed two-parameter model and improvement in the sphere of homogeneous region identification were verified using 195 runoff data sets from hydrologic stations in Serbia in the 1961-2005 period, divided into three non-overlapping 15-year periods. Nash-Sutcliffe's model efficiency coefficient (NSE) was used to assess the: (1) quality of proposed model with identified model parameters; (2) quality of a nonlinear multivariate equation for standard normal variables estimation with identified model parameters; (3) quality of proposed model with model parameter estimates. Generated time-series statistics and nonlinear multivariate equation quality are also evaluated. Five model calibration and validation results are shown. Generated flow series variation coefficient is the best replicated statistics with relative absolute error less than 10%.
T2  - Water Science and Technology
T1  - A normalized regression based regional model for generating flows at ungauged basins
EP  - 108
IS  - 1
SP  - 99
VL  - 68
DO  - 10.2166/wst.2013.216
ER  - 

@article{
author = "Blagojević, Borislava and Plavšić, Jasna",
year = "2013",
abstract = "Revision of existing methodologies for generating monthly-flow series at ungauged basins based on multivariate nonlinear correlation has led to a simple two-parameter model. While the existing methodology used hydrological, meteorological and geomorphologic input data, the proposed model requires hydrological and geomorphologic input data only. The proposed methodology requires formation of separate pools of donor catchments for model parameter estimates. The proposed two-parameter model and improvement in the sphere of homogeneous region identification were verified using 195 runoff data sets from hydrologic stations in Serbia in the 1961-2005 period, divided into three non-overlapping 15-year periods. Nash-Sutcliffe's model efficiency coefficient (NSE) was used to assess the: (1) quality of proposed model with identified model parameters; (2) quality of a nonlinear multivariate equation for standard normal variables estimation with identified model parameters; (3) quality of proposed model with model parameter estimates. Generated time-series statistics and nonlinear multivariate equation quality are also evaluated. Five model calibration and validation results are shown. Generated flow series variation coefficient is the best replicated statistics with relative absolute error less than 10%.",
journal = "Water Science and Technology",
title = "A normalized regression based regional model for generating flows at ungauged basins",
pages = "108-99",
number = "1",
volume = "68",
doi = "10.2166/wst.2013.216"
}

Blagojević, B.,& Plavšić, J.. (2013). A normalized regression based regional model for generating flows at ungauged basins. in Water Science and Technology, 68(1), 99-108.
https://doi.org/10.2166/wst.2013.216

Blagojević B, Plavšić J. A normalized regression based regional model for generating flows at ungauged basins. in Water Science and Technology. 2013;68(1):99-108.
doi:10.2166/wst.2013.216 .

Blagojević, Borislava, Plavšić, Jasna, "A normalized regression based regional model for generating flows at ungauged basins" in Water Science and Technology, 68, no. 1 (2013):99-108,
https://doi.org/10.2166/wst.2013.216 . .

TY  - CONF
AU  - Blagojević, Borislava
AU  - Plavšić, Jasna
AU  - Ristic-Vakanjac, Vesna
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/386
AB  - This paper addresses the problem of defining appropriate characteristic which leads to homogeneous regions identification, required for application of multiple nonlinear regression methodology for interpolation of hydrologic data from gauged to ungauged basins. The underlying methodology of multiple nonlinear regression is based on theory of standardization and normalization of correlation. In order to obtain synthetic runoff series at ungauged basins, one of the key steps is estimation of spatial correlation function. There are theoretical and empirical correlation functions. While empirical correlation function is estimated according to correlation coefficients of runoff series at gauged basins and their mutual distance, its pair - theoretical correlation function is merely a shift of empirical correlation function. This shift is made to achieve correlation coefficient of one for zero distance. However, this shift is acceptable only if performed in homogeneous region comprising of basins which behave in a hydrologically similar way. A basin characteristic that describes hydrological behavior similarity is examined among morphologic characteristic, basin proximity, and runoff time series statistics. There are two criteria for homogeneity control. They refer to empirical and theoretical spatial correlation function, and eventually identify donor catchments for ungauged basin. Study area for research is the territory of Republic of Serbia without provinces of Vojvodina and Kosovo. Basins up to area of 1000 km2 are taken into consideration. Within the period 1961-2005, three sub-periods of 15 years each are examined for mean monthly runoff time series simulation potential at ungauged basins.
C3  - 11th International Multidisciplinary Scientific Geoconference (Sgem 2011), Vol II
T1  - Identification of homogeneous regions for runoff estimation in ungauged basins
SP  - 887
UR  - https://hdl.handle.net/21.15107/rcub_grafar_386
ER  - 

@conference{
author = "Blagojević, Borislava and Plavšić, Jasna and Ristic-Vakanjac, Vesna",
year = "2011",
abstract = "This paper addresses the problem of defining appropriate characteristic which leads to homogeneous regions identification, required for application of multiple nonlinear regression methodology for interpolation of hydrologic data from gauged to ungauged basins. The underlying methodology of multiple nonlinear regression is based on theory of standardization and normalization of correlation. In order to obtain synthetic runoff series at ungauged basins, one of the key steps is estimation of spatial correlation function. There are theoretical and empirical correlation functions. While empirical correlation function is estimated according to correlation coefficients of runoff series at gauged basins and their mutual distance, its pair - theoretical correlation function is merely a shift of empirical correlation function. This shift is made to achieve correlation coefficient of one for zero distance. However, this shift is acceptable only if performed in homogeneous region comprising of basins which behave in a hydrologically similar way. A basin characteristic that describes hydrological behavior similarity is examined among morphologic characteristic, basin proximity, and runoff time series statistics. There are two criteria for homogeneity control. They refer to empirical and theoretical spatial correlation function, and eventually identify donor catchments for ungauged basin. Study area for research is the territory of Republic of Serbia without provinces of Vojvodina and Kosovo. Basins up to area of 1000 km2 are taken into consideration. Within the period 1961-2005, three sub-periods of 15 years each are examined for mean monthly runoff time series simulation potential at ungauged basins.",
journal = "11th International Multidisciplinary Scientific Geoconference (Sgem 2011), Vol II",
title = "Identification of homogeneous regions for runoff estimation in ungauged basins",
pages = "887",
url = "https://hdl.handle.net/21.15107/rcub_grafar_386"
}

Blagojević, B., Plavšić, J.,& Ristic-Vakanjac, V.. (2011). Identification of homogeneous regions for runoff estimation in ungauged basins. in 11th International Multidisciplinary Scientific Geoconference (Sgem 2011), Vol II, 887.
https://hdl.handle.net/21.15107/rcub_grafar_386

Blagojević B, Plavšić J, Ristic-Vakanjac V. Identification of homogeneous regions for runoff estimation in ungauged basins. in 11th International Multidisciplinary Scientific Geoconference (Sgem 2011), Vol II. 2011;:887.
https://hdl.handle.net/21.15107/rcub_grafar_386 .

Blagojević, Borislava, Plavšić, Jasna, Ristic-Vakanjac, Vesna, "Identification of homogeneous regions for runoff estimation in ungauged basins" in 11th International Multidisciplinary Scientific Geoconference (Sgem 2011), Vol II (2011):887,
https://hdl.handle.net/21.15107/rcub_grafar_386 .

TY  - JOUR
AU  - Blagojević, Borislava
AU  - Plavšić, Jasna
AU  - Potić, Olivera
PY  - 2008
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/197
AB  - The paper presents in detail application of the peak over threshold (POT) method for flood flow estimation for the Toplodolska river, gauge station Topli Do. In addition, design flood flows are estimated by means of the synthetic unit hydrograph methodology, and the Limit Intensities Theory. The basis for flood estimation is the 14-year flow record at the Topli Do station and the daily precipitation maximal record. The nearby hydrologic station Visočka Ržana on the Visočica River is used as the control station for calculated flows. Flood flow estimation results are also shown compared to the flood flow envelopes for the territory of Serbia. Computations represent a part of a hydrologic study of water captures for small hydropower plant in the village of Topli Do.
AB  - U radu je detaljno prikazana primena metode parcijalnih serija za proračun velikih voda Toplodolske reke u profilu V.S. Topli Do. Računske velike vode ocenjene su još i metodom sintetičkog jediničnog hidrograma - aproksimacija trouglom i teorijom graničnih intenziteta. Korišćeni su podaci osmatranja proticaja na V.S. Topli Do, trajanja 14 godina i osmatranja visine dnevnih padavina. Kao kontrolna stanica usvojena je V.S. Visočka Ržana na reci Visočici. Rezultati ocene velikih voda prikazani su u odnosu na anvelope specifičnih oticaja velikih voda reka Srbije. Proračuni su vršeni u okviru hidrološke studije za profile zahvata planirane male hiroelektrane (MHE) u ataru sela Topli Do.
PB  - Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš
T2  - Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš
T1  - Computational flood flow of Toplodolska river at Topli Do
T1  - Računske velike vode Toplodolske reke u profilu Topli Do
EP  - 172
IS  - 23
SP  - 159
UR  - https://hdl.handle.net/21.15107/rcub_grafar_197
ER  - 

@article{
author = "Blagojević, Borislava and Plavšić, Jasna and Potić, Olivera",
year = "2008",
abstract = "The paper presents in detail application of the peak over threshold (POT) method for flood flow estimation for the Toplodolska river, gauge station Topli Do. In addition, design flood flows are estimated by means of the synthetic unit hydrograph methodology, and the Limit Intensities Theory. The basis for flood estimation is the 14-year flow record at the Topli Do station and the daily precipitation maximal record. The nearby hydrologic station Visočka Ržana on the Visočica River is used as the control station for calculated flows. Flood flow estimation results are also shown compared to the flood flow envelopes for the territory of Serbia. Computations represent a part of a hydrologic study of water captures for small hydropower plant in the village of Topli Do., U radu je detaljno prikazana primena metode parcijalnih serija za proračun velikih voda Toplodolske reke u profilu V.S. Topli Do. Računske velike vode ocenjene su još i metodom sintetičkog jediničnog hidrograma - aproksimacija trouglom i teorijom graničnih intenziteta. Korišćeni su podaci osmatranja proticaja na V.S. Topli Do, trajanja 14 godina i osmatranja visine dnevnih padavina. Kao kontrolna stanica usvojena je V.S. Visočka Ržana na reci Visočici. Rezultati ocene velikih voda prikazani su u odnosu na anvelope specifičnih oticaja velikih voda reka Srbije. Proračuni su vršeni u okviru hidrološke studije za profile zahvata planirane male hiroelektrane (MHE) u ataru sela Topli Do.",
publisher = "Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš",
journal = "Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš",
title = "Computational flood flow of Toplodolska river at Topli Do, Računske velike vode Toplodolske reke u profilu Topli Do",
pages = "172-159",
number = "23",
url = "https://hdl.handle.net/21.15107/rcub_grafar_197"
}

Blagojević, B., Plavšić, J.,& Potić, O.. (2008). Computational flood flow of Toplodolska river at Topli Do. in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš
Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš.(23), 159-172.
https://hdl.handle.net/21.15107/rcub_grafar_197

Blagojević B, Plavšić J, Potić O. Computational flood flow of Toplodolska river at Topli Do. in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš. 2008;(23):159-172.
https://hdl.handle.net/21.15107/rcub_grafar_197 .

Blagojević, Borislava, Plavšić, Jasna, Potić, Olivera, "Computational flood flow of Toplodolska river at Topli Do" in Zbornik radova Građevinsko-arhitektonskog fakulteta, Niš, no. 23 (2008):159-172,
https://hdl.handle.net/21.15107/rcub_grafar_197 .