prikaz prve stranice dokumenta Concentration statistics for conservative solute transport in river estuaries
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doctoral thesis
Concentration statistics for conservative solute transport in river estuaries
doctoral dissertation
2018. urn:nbn:hr:123:389037
Galešić, Morena
University of Split
Faculty of Civil Engineering, Architecture and Geodesy
Department of Hydrotechnical Engineering

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Galešić, M. (2018). Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation (Doctoral thesis). Split: University of Split, Faculty of Civil Engineering, Architecture and Geodesy. Retrieved from https://urn.nsk.hr/urn:nbn:hr:123:389037

Galešić, Morena. "Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation." Doctoral thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy, 2018. https://urn.nsk.hr/urn:nbn:hr:123:389037

Galešić, Morena. "Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation." Doctoral thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy, 2018. https://urn.nsk.hr/urn:nbn:hr:123:389037

Galešić, M. (2018). 'Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation', Doctoral thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy, accessed 01 April 2025, https://urn.nsk.hr/urn:nbn:hr:123:389037

Galešić M. Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation [Doctoral thesis]. Split: University of Split, Faculty of Civil Engineering, Architecture and Geodesy; 2018 [cited 2025 April 01] Available at: https://urn.nsk.hr/urn:nbn:hr:123:389037

M. Galešić, "Concentration statistics for conservative solute transport in river estuaries : doctoral dissertation", Doctoral thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:123:389037

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Metadata
TitleConcentration statistics for conservative solute transport in river estuaries : doctoral dissertation
Title (croatian)Prostorna distribucija koncentracije zagađenja kao rezultat pronosa u ušćima rijeka : disertacija
AuthorMorena Galešić
MentorRoko Andričević (mentor)
Committee memberNikša Jajac (predsjednik povjerenstva)
Committee memberHrvoje Gotovac (član povjerenstva)
Committee memberDarko Koračin (član povjerenstva)
Committee memberVladimir Cvetkovic (član povjerenstva)
VIAF: 39346092
Committee memberGoran Lončar (član povjerenstva)
GranterUniversity of Split
Faculty of Civil Engineering, Architecture and Geodesy
(Department of Hydrotechnical Engineering)
Split
Defense date and country2018-02-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Hydrotechnology
Universal decimal classification
(UDC)		55 - Geology. Meteorology. Hydrology
Abstract
When addressing water quality issues in coastal zone management, rivers are considered to be among the most significant pathways for waterborne solute transport. On the other hand, estuaries are some of the most productive environments on Earth and multiple interests from different stakeholders put additional pressure on such an ecosystem. Estuaries are thus among the most critical areas for pollution hazard and a lot of research is being conducted in order to ensure their sustainable... More development. The flow in an estuary is characterized by a mixing process, which results from a combination of small-scale turbulent diffusion and larger-scale variation of mean advective velocities. Scalar concentration in such turbulent flows is a random variable, which requires a statistical approach. This thesis focuses on the development of two analytical methodologies for obtaining concentration statistics of a conservative contaminant generated by a steady river flow in a salt-wedge estuary. Analytically obtained concentration statistics, which include concentration moments, probability density function defined in point, spatially integrated moments, and expected mass fraction, significantly reduce the costs and time needed for obtaining the measured data. Although these analytical models lack the level of detail possessed by sophisticated numerical models, they can generate results within seconds and with little preprocessing. Therefore, the developed analytical models represent screening tools for obtaining concentration statistics of pollution in estuaries, and can be used by stakeholders of different backgrounds. While investigating various validation procedures for the developed analytical models, and using the case study of the Žrnovnica River estuary, near Split, Croatia, several new findings were obtained. For instance, a new model for mean velocity attenuation was proposed and verified. Furthermore, a new proxy concentration was tested and, combined with numerical modeling, it delivered qualitative verification of analytically obtained concentration statistics. The analytical model for point concentration statistics was implemented in a user-friendly computer application (CPoRT) and presented to different stakeholders as a screening tool. Finally, the most important scientific contributions of this thesis are the development of the semi-analytical approach for obtaining concentration statistics in a river-dominated estuary, application of proxy concentration using the salinity data and the introduction of the expected mass fraction as a significant novelty to address the pollution loading to coastal waters. Less
Abstract (croatian)
Prilikom analize kakvoće vode u okviru upravljanja obalnim područjima, rijeke se smatraju jednim od najznačajnijih izvora zagađenja. Nadalje, ušća pripadaju najbogatijim ekosustavima na Zemlji, što ih čini podložnima dodatnim pritiscima različitih interesa. Stoga su ušća iznimno osjetljiva područja te se brojna istraživanja provode radi osiguravanja njihova održivog razvoja. Tok u ušćima obilježen je procesom miješanja koje predstavlja rezultat djelovanja turbulentne difuzije na maloj... More skali te varijabilnosti advektivne srednje brzine na većoj skali. U takvim turbulentnim tokovima skalarna koncentracija jest slučajna varijabla, što zahtijeva odgovarajući statistički pristup. Ova disertacija usredotočena je na razvoj dviju analitičkih metodologija za izračun statističkih parametara koncentracije zagađenja koje je nastalo uslijed konzervativnog i stacionarnog pronosa u stratificiranom u šću. Tako dobiveni parametri uključuju statističke momente koncentracije, pripadajuće funkcije gustoće vjerojatnosti, prostorno integrirane momente koncentracije te funkcije očekivanog udjela mase. Ako se izračunaju analitički, navedene veličine znatno smanjuju moguće troškove mjerenja. Razvijeni analitički modeli nemaju razlučivost poput sofisticiranih numeričkih modela, ali mogu brzo pružiti tražene vrijednosti uz malo pretprocesiranja. Zaključno, navedeni analitički modeli predstavljaju alate za brzu procjenu zagađenja u nekom ušću, te ih kao takve mogu upotrebljavati dionici s različitim predznanjem. Prilikom validacijskih postupaka za razvijene metodologije na pilot-području ušća rijeke Žrnovnice, pored Splita (Hrvatska), došlo je do novih spoznaja. Predložen je i verificiran novi model smanjenja srednje brzine toka. Uz navedeno, predložena je i nova proxy koncentracija (zamjena za koncentraciju zagađenja), koja je u kombinaciji s rezultatima numeričkog modeliranja omogućila kvalitativnu verifikaciju statističkih parametara dobivenih analitičkim modelima. Naknadno je analitički model za izračun točkastih statističkih parametara ugrađen u računalnu aplikaciju (CPoRT), a ista je predstavljena različitim dionicima upravo kao alat za brzu procjenu potencijalnog zagađenja u ušćima. Zaključno, najvažniji znanstveni doprinosi ove disertacije su razvoj polu-analitičkog pristupa za izračun statističkih parametara koncentracije u ušću dominiranom tokom rijeke, primjena proxy koncentracije korištenjem podataka o slanosti, primjena koncepta očekivanog udjela mase kao značajne novine prilikom analize opterećenja zagađenjem na priobalne vode. Less
Keywords
Keywords (croatian)
Languageenglish
DOIhttps://doi.org/10.31534/DocT.044.GalM
URN:NBNurn:nbn:hr:123:389037
Study programmeTitle: Civil Engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti, polje građevinarstvo (doktor/doktorica znanosti, područje tehničkih znanosti, polje građevinarstvo)
Catalog URLhttps://library.foi.hr/lib/knjiga.php?B=422&H=&E=&V=&lok=&zbi=&item=13766
Type of resourceText
ExtentXXXIII, 160, [3] str. : graf. prikazi, ilustr. u bojama ; 30 cm
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2019-02-16
Terms of useLicence In copyright icon
Created on2018-03-02 01:04:17
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