Prof. Dr. Ognjen Bonacci
Architecture and Geodesy, Faculty of Civil Engineering, Split University, Poljička cesta 35, 21000 Split, Croatia
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Academic Career Length
48Years (1979-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications11 August 2017 in Science
Journal Article
Günter BlöschlJHJulia Hall
Julia Hall
Juraj Parajka
Rui A. P. PerdigãoBMBruno Merz
Bruno MerzNŽNenad Živković
Nenad Živković +40
Flooding along the river: Will a warming climate affect river floods? The prevailing sentiment is yes, but a consistent signal in flood magnitudes has not been found. Blöschl et al. analyzed the timing of river floods in Europe over the past 50 years and found clear patterns of changes in flood timing that can be ascribed to climate effects (see the Perspective by Slater and Wilby). These variations include earlier spring snowmelt floods in northeastern Europe, later winter floods around the North Sea and parts of the Mediterranean coast owing to delayed winter storms, and earlier winter floods in western Europe caused by earlier soil moisture maxima. Science , this issue p. 588 see also p. 552
1 February 1993 in Hydrological Sciences Journal
Journal Article
Ognjen BonacciBy analysing the hydrographs of karst springs it is possible to identify aquifer characteristics and, accordingly, the main features of a karst rock-fissure massif. Consequently, relevant data can be obtained by analysing hydrograph recession curves. This paper presents a detailed analysis and explanation of numerous cases of break points on recession curves via various values of the recession coefficient α in Maillet's (1905) equation. The paper also identifies the relationship between α and a linear reservoir coefficient by employing groundwater hydrograph methods. It is shown that the linear reservoir coefficient changes with time in accordance with changes of the flow conditions in the karst massif.
23 January 2008 in Environmental Geology
Journal Article
31 March 2006 in Natural Hazards and Earth System Sciences
Journal Article
Flash floods constitute one of the deadliest and costliest natural disasters worldwide. This paper explains the karst flash flood phenomenon, which represents a special kind of flash flood. As the majority of flash floods karst flash floods are caused by intensive short-term precipitation in an area whose surface rarely exceeds a few square kilometres. The characteristics of all flash floods are their short duration, small areal extent, high flood peaks and rapid flows, and heavy loss of life and property. Karst flash floods have specific characteristics due to special conditions for water circulation, which exist in karst terrains. During karst flash floods a sudden rise of groundwater levels occurs, which causes the appearance of numerous, unexpected, abundant and temporary karst springs. This paper presents in detail an example of a karst flash flood in the Marina bay (Dinaric karst region of Croatia), which occurred in December 2004.
30 April 2019 in Water Resources Management
Journal Article
BHBahrudin Hrnjica
Bahrudin HrnjicaOgnjen Bonacci22 September 2006 in Hydrological Processes
Journal Article
CPCvetanka Popovska
Cvetanka PopovskaOgnjen BonacciAbout Me
Prof. Ognjen Bonacci is professor emeritus at the University of Split, faculty of civil engineering, architecture and geodesy, Croatia. He earned his PhD (1976), msc (1971), and diploma in civil engineering (1965) from the University of Zagreb. His research focuses on engineering hydrology, karst hydrology, ecohydrology, hydrometry, sediment transport, and water resources management. Prof. Bonacci served as chairperson of the Croatian national committee for the UNESCO international hydrological programme (IHP) and the world meteorological organization’s operational hydrological programme (2000–2010), and as chairperson (2004–2006) and vice-chairperson (2007–2008) of the IHP-UNESCO bureau. He is a member of the advisory board of the UNESCO-IHE Institute for water education (Delft) and the academic committee of the UNESCO international research center on karst (IRCK, Guilin, China). Author of five books and over 700 scientific papers, including more than 90 in leading international journals, he has presented at over 170 conferences worldwide. Prof. Bonacci has reviewed more than 400 papers for top scientific journals and received multiple national awards, including the Croatian national science award (1988, 2011). His work has been cited over 5,000 times in Scopus and Web of Science.