Articles | Volume 28, issue 13
https://doi.org/10.5194/hess-28-2831-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-28-2831-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Using the classical model for structured expert judgment to estimate extremes: a case study of discharges in the Meuse River
Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands
Pattle Delamore Partners Ltd., Ōtautahi / Christchurch, New Zealand
Oswaldo Morales-Nápoles
Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands
Matthijs Kok
Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands
HKV consultants, Delft, the Netherlands
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Fumihiko Uemura, Guus Rongen, Shigekazu Masuya, Takatoshi Yoshida, and Tomohito J. Yamada
Proc. IAHS, 386, 69–74, https://doi.org/10.5194/piahs-386-69-2024, https://doi.org/10.5194/piahs-386-69-2024, 2024
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To accurately assess flood risk, it is necessary to evaluate whether a dike will fail. The internal structure and slope conditions of dikes are different from place to place, and it is difficult to survey all of them. Thus, we proposed a method to define the heterogeneity of levees as uncertainty and to calculate the dike failure as probability. Our method can set conditions of dike failure that are closer to reality, and will contribute to improving the accuracy of flood risk assessment.
Bart Strijker and Matthijs Kok
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This study examines how hydraulic head levels in canal dikes respond to heavy rainfall, potentially causing instabilities and flooding. Using time series models and simulating long-term head levels, we identified clusters of dikes where head peaks are driven by similar rainfall events. Statistical analyses show that extreme and yearly conditions are close. However, extreme conditions are expected to become more frequent due to climate change, though some dikes will be less affected than others.
Fumihiko Uemura, Guus Rongen, Shigekazu Masuya, Takatoshi Yoshida, and Tomohito J. Yamada
Proc. IAHS, 386, 69–74, https://doi.org/10.5194/piahs-386-69-2024, https://doi.org/10.5194/piahs-386-69-2024, 2024
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To accurately assess flood risk, it is necessary to evaluate whether a dike will fail. The internal structure and slope conditions of dikes are different from place to place, and it is difficult to survey all of them. Thus, we proposed a method to define the heterogeneity of levees as uncertainty and to calculate the dike failure as probability. Our method can set conditions of dike failure that are closer to reality, and will contribute to improving the accuracy of flood risk assessment.
Elisa Ragno, Markus Hrachowitz, and Oswaldo Morales-Nápoles
Hydrol. Earth Syst. Sci., 26, 1695–1711, https://doi.org/10.5194/hess-26-1695-2022, https://doi.org/10.5194/hess-26-1695-2022, 2022
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We explore the ability of non-parametric Bayesian networks to reproduce maximum daily discharge in a given month in a catchment when the remaining hydro-meteorological and catchment attributes are known. We show that a saturated network evaluated in an individual catchment can reproduce statistical characteristics of discharge in about ~ 40 % of the cases, while challenges remain when a saturated network considering all the catchments together is evaluated.
Dominik Paprotny, Heidi Kreibich, Oswaldo Morales-Nápoles, Paweł Terefenko, and Kai Schröter
Nat. Hazards Earth Syst. Sci., 20, 323–343, https://doi.org/10.5194/nhess-20-323-2020, https://doi.org/10.5194/nhess-20-323-2020, 2020
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Houses and their contents in Europe are worth trillions of euros, resulting in high losses from natural hazards. Hence, risk assessments need to reliably estimate the size and value of houses, including the value of durable goods kept inside. In this work we show how openly available or open datasets can be used to predict the size of individual residential buildings. Further, we provide standardized monetary values of houses and contents per square metre of floor space for 30 countries.
Richard Marijnissen, Matthijs Kok, Carolien Kroeze, and Jantsje van Loon-Steensma
Nat. Hazards Earth Syst. Sci., 19, 737–756, https://doi.org/10.5194/nhess-19-737-2019, https://doi.org/10.5194/nhess-19-737-2019, 2019
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Flood defences have the potential to be integrated with many other functions. While assessments of multifunctional dikes are usually conservative, using a probabilistic framework allows for synergies to be integrated and the risks to be made explicit. This change leads to a better perspective on the protection level of a flood defence and the effectiveness of reinforcements, allowing for better implementation of multifunctional elements on flood defences.
Dominik Paprotny, Michalis I. Vousdoukas, Oswaldo Morales-Nápoles, Sebastiaan N. Jonkman, and Luc Feyen
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2018-132, https://doi.org/10.5194/hess-2018-132, 2018
Preprint withdrawn
Dominik Paprotny, Oswaldo Morales-Nápoles, and Sebastiaan N. Jonkman
Earth Syst. Sci. Data, 10, 565–581, https://doi.org/10.5194/essd-10-565-2018, https://doi.org/10.5194/essd-10-565-2018, 2018
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Natural hazards affect areas with various population density, economic production value and preparedness. This database will help to assess the impact of hazards in Europe in a long-term perspective. It contains data on losses, dates and location of 1564 floods from 1870–2016 in 37 countries. For the same area and timeframe, land use, population and asset value were reconstructed. Combining both data sets, one can correct the amount of losses from past events for demographic and economic growth.
Egidius Johanna Cassianus Dupuits, Ferdinand Lennaert Machiel Diermanse, and Matthijs Kok
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Flood defences, such as levees, emergency storage basins or storm surge barriers, can be designed as multiple lines of defence. If each line of defence has a number of possible levels, the total number of possible system configurations can be large. This paper presents an approach that is able to find an optimal configuration including future adaptations of such a flood defence system, based on an economic cost–benefit analysis.
Dominik Paprotny, Oswaldo Morales-Nápoles, and Sebastiaan N. Jonkman
Nat. Hazards Earth Syst. Sci., 17, 1267–1283, https://doi.org/10.5194/nhess-17-1267-2017, https://doi.org/10.5194/nhess-17-1267-2017, 2017
Dominik Paprotny and Oswaldo Morales-Nápoles
Hydrol. Earth Syst. Sci., 21, 2615–2636, https://doi.org/10.5194/hess-21-2615-2017, https://doi.org/10.5194/hess-21-2615-2017, 2017
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Subject: Rivers and Lakes | Techniques and Approaches: Uncertainty analysis
Ensemble streamflow data assimilation using WRF-Hydro and DART: novel localization and inflation techniques applied to Hurricane Florence flooding
Assessment of uncertainties in soil erosion and sediment yield estimates at ungauged basins: an application to the Garra River basin, India
Sediment and nutrient budgets are inherently dynamic: evidence from a long-term study of two subtropical reservoirs
Performance and robustness of probabilistic river forecasts computed with quantile regression based on multiple independent variables
Using high-frequency water quality data to assess sampling strategies for the EU Water Framework Directive
Future changes in extreme precipitation in the Rhine basin based on global and regional climate model simulations
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Mohamad El Gharamti, James L. McCreight, Seong Jin Noh, Timothy J. Hoar, Arezoo RafieeiNasab, and Benjamin K. Johnson
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The article introduces novel ensemble data assimilation (DA) techniques for streamflow forecasting using WRF-Hydro and DART. Model-related biases are tackled through spatially and temporally varying adaptive prior and posterior inflation. Spurious and physically incorrect correlations, on the other hand, are mitigated using a topologically based along-the-stream localization. Hurricane Florence (2018) in the Carolinas, USA, is used as a test case to investigate the performance of DA techniques.
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Katherine R. O'Brien, Tony R. Weber, Catherine Leigh, and Michele A. Burford
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Long-term catchment sediment and nutrient budgets are important for managing soil and nutrient resources for more sustainability. Here we construct a 14-year budget of water, sediment and nutrients across two subtropical reservoirs. A major flood in January 2011 dominated flow and loads in and out of both reservoirs. Sediment and nutrient budgets are inherently dynamic, and our results demonstrate that meaningful reservoir budgets require reliable estimates of uncertainty and variability.
F. Hoss and P. S. Fischbeck
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This paper further develops the method of quantile regression (QR) to generate probabilistic river stage forecasts. Besides the forecast itself, this study uses the rate of rise of the river stage in the last 24 and 48h and the forecast error 24 and 48h before as predictors in QR configurations. When compared to just using the forecast as an independent variable, adding the latter four predictors significantly improved the forecasts, as measured by the Brier skill score and the CRPS.
R. A. Skeffington, S. J. Halliday, A. J. Wade, M. J. Bowes, and M. Loewenthal
Hydrol. Earth Syst. Sci., 19, 2491–2504, https://doi.org/10.5194/hess-19-2491-2015, https://doi.org/10.5194/hess-19-2491-2015, 2015
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The EU Water Framework Directive requires rivers to be of good chemical and ecological quality. Chemical quality is assessed by sampling and analysing the water. Normal sampling regimes might involve taking a sample monthly or weekly. This paper uses high-frequency data from rivers to assess how accurate these regimes are at assessing the true chemical quality. Weekly sampling was more accurate than monthly, but there were still large uncertainties. We suggest ways to improve sampling accuracy.
S. C. van Pelt, J. J. Beersma, T. A. Buishand, B. J. J. M. van den Hurk, and P. Kabat
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M. B. Kalinowska and P. M. Rowiński
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A. Domeneghetti, A. Castellarin, and A. Brath
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Short summary
This study proposes a new method for predicting extreme events such as floods on the river Meuse. The current method was shown to be unreliable as it did not predict a recent flood. We developed a model that includes information from experts and combines this with measurements. We found that this approach gives more accurate predictions, particularly for extreme events. The research is important for predictions of extreme flood levels that are necessary for protecting communities against floods.
This study proposes a new method for predicting extreme events such as floods on the river...