Hydrologic system complexity and nonlinear dynamic concepts for a catchment classification framework

B Sivakumar, VP Singh - Hydrology and Earth System Sciences, 2012 - hess.copernicus.org
The absence of a generic modeling framework in hydrology has long been recognized. With
our current practice of developing more and more complex models for specific individual …

Multiscale error analysis, correction, and predictive uncertainty estimation in a flood forecasting system

K Bogner, F Pappenberger - Water Resources Research, 2011 - Wiley Online Library
River discharge predictions often show errors that degrade the quality of forecasts. Three
different methods of error correction are compared, namely, an autoregressive model with …

Investigating chaos in river stage and discharge time series

R Khatibi, B Sivakumar, MA Ghorbani, O Kisi… - Journal of …, 2012 - Elsevier
The existence of chaotic behaviour in the river stage and discharge time series observed at
the Sogutluhan hydrometric station, Turkey, is investigated. Five nonlinear dynamic methods …

Complex networks, community structure, and catchment classification in a large-scale river basin

K Fang, B Sivakumar, FM Woldemeskel - Journal of hydrology, 2017 - Elsevier
This study introduces the concepts of complex networks, especially community structure, to
classify catchments in large-scale river basins. The Mississippi River basin (MRB) is …

Nonlinear dynamics and chaos in hydrologic systems: latest developments and a look forward

B Sivakumar - Stochastic Environmental Research and Risk …, 2009 - Springer
During the last two decades or so, studies on the applications of the concepts of nonlinear
dynamics and chaos to hydrologic systems and processes have been on the rise. Earlier …

Hydrologic complexity and classification: a simple data reconstruction approach

B Sivakumar, AW Jayawardena… - … : An International Journal, 2007 - Wiley Online Library
Technological advances, by facilitating extensive data collection, better data sharing,
formulation of sophisticated methods, and development of complex models, have brought …

Temporal streamflow analysis: coupling nonlinear dynamics with complex networks

N Yasmin, B Sivakumar - Journal of Hydrology, 2018 - Elsevier
This study presents a new approach for complex networks-based analysis of temporal
streamflow dynamics. The novelty comes in the form of using nonlinear dynamic concepts to …

Complexity–entropy analysis of daily stream flow time series in the continental United States

F Serinaldi, L Zunino, OA Rosso - Stochastic Environmental Research and …, 2014 - Springer
Complexity–entropy causality plane (CECP) is a diagnostic diagram plotting normalized
Shannon entropy\cal H _S HS versus Jensen–Shannon complexity\cal C _ JS CJS that has …

Dynamic characteristics of monthly rainfall in the Korean Peninsula under climate change

MS Kyoung, HS Kim, B Sivakumar, VP Singh… - … Research and Risk …, 2011 - Springer
Global climate change is one of the most serious issues we are facing today. While its exact
impacts on our water resources are hard to predict, there is a general consensus among …

Local polynomial method for ensemble forecast of time series

S Regonda, B Rajagopalan, U Lall… - Nonlinear Processes …, 2005 - npg.copernicus.org
We present a nonparametric approach based on local polynomial regression for ensemble
forecast of time series. The state space is first reconstructed by embedding the univariate …