Research article 20 Jul 2016
Research article | 20 Jul 2016
Influence of expertise on rockfall hazard assessment using empirical methods
Adeline Delonca et al.
Related authors
Adeline Delonca, Yann Gunzburger, and Thierry Verdel
Nat. Hazards Earth Syst. Sci., 21, 1263–1278, https://doi.org/10.5194/nhess-21-1263-2021, https://doi.org/10.5194/nhess-21-1263-2021, 2021
Short summary
Short summary
Rockfalls are a major sources of danger, particularly along transportation routes. Thus, the assessment of their occurrence is a major challenge for risk management. One interesting factor involved in the occurrence of an event is the failure mechanism of rock bridges along the potential failure plane. This work proposes to study the phenomenology of this failure considering numerical modelling. The influence of rock bridge position in regard to the rockfall failure mode is highlighted.
A. Delonca, Y. Gunzburger, and T. Verdel
Nat. Hazards Earth Syst. Sci., 14, 1953–1964, https://doi.org/10.5194/nhess-14-1953-2014, https://doi.org/10.5194/nhess-14-1953-2014, 2014
Adeline Delonca, Yann Gunzburger, and Thierry Verdel
Nat. Hazards Earth Syst. Sci., 21, 1263–1278, https://doi.org/10.5194/nhess-21-1263-2021, https://doi.org/10.5194/nhess-21-1263-2021, 2021
Short summary
Short summary
Rockfalls are a major sources of danger, particularly along transportation routes. Thus, the assessment of their occurrence is a major challenge for risk management. One interesting factor involved in the occurrence of an event is the failure mechanism of rock bridges along the potential failure plane. This work proposes to study the phenomenology of this failure considering numerical modelling. The influence of rock bridge position in regard to the rockfall failure mode is highlighted.
A. Delonca, Y. Gunzburger, and T. Verdel
Nat. Hazards Earth Syst. Sci., 14, 1953–1964, https://doi.org/10.5194/nhess-14-1953-2014, https://doi.org/10.5194/nhess-14-1953-2014, 2014
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Risk Assessment, Mitigation and Adaptation Strategies, Socioeconomic and Management Aspects
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We present a framework to evaluate the benefits and costs of coastal adaptation through dikes to reduce future flood risk. If no adaptation takes place, we find that global coastal flood risk increases 150-fold by 2080, with sea-level rise contributing the most. Moreover, 15 countries account for 90 % of this increase; that adaptation shows high potential to cost-effectively reduce flood risk. The results will be integrated into the Aqueduct Global Flood Analyzer web tool.
Jonas Laudan, Gert Zöller, and Annegret H. Thieken
Nat. Hazards Earth Syst. Sci., 20, 999–1023, https://doi.org/10.5194/nhess-20-999-2020, https://doi.org/10.5194/nhess-20-999-2020, 2020
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The paper focuses on psychological impacts of river floods and flash floods on affected individuals. Since the connection between psychological characteristics and protection motivation is not yet fully understood, potential coherences are investigated with regard to both flood types. As a main result, the frequency of remembering an event seems to be positively connected to a greater willingness to protect oneself, especially if affected by a weaker flood event.
Roland Löwe and Karsten Arnbjerg-Nielsen
Nat. Hazards Earth Syst. Sci., 20, 981–997, https://doi.org/10.5194/nhess-20-981-2020, https://doi.org/10.5194/nhess-20-981-2020, 2020
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To consider potential future urban developments in pluvial flood risk assessment, we develop empirical relationships for imperviousness and flood damage based on an analysis of existing urban characteristics. Results suggest that (1) data resolutions must be carefully selected, (2) there are lower limits for the spatial scale at which predictions can be generated, and (3) depth-dependent damage estimates are challenging to reproduce empirically and can be vulnerable to simulation artifacts.
Yaxu Wang, Juan Lv, Jamie Hannaford, Yicheng Wang, Hongquan Sun, Lucy J. Barker, Miaomiao Ma, Zhicheng Su, and Michael Eastman
Nat. Hazards Earth Syst. Sci., 20, 889–906, https://doi.org/10.5194/nhess-20-889-2020, https://doi.org/10.5194/nhess-20-889-2020, 2020
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Due to the specific applicability of drought impact indicators, this study identifies which drought indicators are suitable for characterising drought impacts and the contribution of vulnerability factors. The results show that the relationship varies across different drought impacts and cities; some factors have a strong positive correlation with drought vulnerability. This study can support drought planning work and provide background for the indices used in drought monitoring applications.
Irene Blanco-Gutiérrez, Rhys Manners, Consuelo Varela-Ortega, Ana M. Tarquis, Lucieta G. Martorano, and Marisol Toledo
Nat. Hazards Earth Syst. Sci., 20, 797–813, https://doi.org/10.5194/nhess-20-797-2020, https://doi.org/10.5194/nhess-20-797-2020, 2020
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The Amazon rainforest is being destroyed, resulting in negative ecological and social impacts. We explore how stakeholders perceive the causes of the Amazon's degradation in Bolivia and Brazil and develop a series of scenarios to help strengthen the balance between human development and environmental conservation. The results suggest that the application of governance and well-integrated technical and social reform strategies encourages positive regional changes even under climate change.
Isabel Meza, Stefan Siebert, Petra Döll, Jürgen Kusche, Claudia Herbert, Ehsan Eyshi Rezaei, Hamideh Nouri, Helena Gerdener, Eklavyya Popat, Janna Frischen, Gustavo Naumann, Jürgen V. Vogt, Yvonne Walz, Zita Sebesvari, and Michael Hagenlocher
Nat. Hazards Earth Syst. Sci., 20, 695–712, https://doi.org/10.5194/nhess-20-695-2020, https://doi.org/10.5194/nhess-20-695-2020, 2020
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The paper presents, for the first time, a global-scale drought risk assessment for both irrigated and rainfed agricultural systems while considering drought hazard indicators, exposure and expert-weighted vulnerability indicators. We identify global patterns of drought risk and, by disaggregating risk into its underlying components and factors, provide entry points for risk reduction.
Danhua Xin, James Edward Daniell, and Friedemann Wenzel
Nat. Hazards Earth Syst. Sci., 20, 643–672, https://doi.org/10.5194/nhess-20-643-2020, https://doi.org/10.5194/nhess-20-643-2020, 2020
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Field surveys after major disastrous earthquakes have shown that poor performance of buildings in earthquake-affected areas is the leading cause of human fatalities and economic losses. The evaluation of seismic fragility for existing building stocks has become a crucial issue due to the frequent occurrence of earthquakes in the last decades. This study conducts such a comprehensive review for mainland China and aims to better serve the natural disaster prevention and mitigation cause in China.
Marcello Arosio, Mario L. V. Martina, and Rui Figueiredo
Nat. Hazards Earth Syst. Sci., 20, 521–547, https://doi.org/10.5194/nhess-20-521-2020, https://doi.org/10.5194/nhess-20-521-2020, 2020
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Assessing the risk of complex systems to natural hazards is an important and challenging problem. In today’s socio-technological world, the connections and interdependencies between exposed elements are crucial. These complex relations call for a paradigm shift in collective risk assessment. This paper proposes a holistic, graph-based approach for assessing the risk of complex systems. The feasibility of the approach is discussed by an application to a pilot study in Mexico City.
James H. Williams, Thomas M. Wilson, Nick Horspool, Ryan Paulik, Liam Wotherspoon, Emily M. Lane, and Matthew W. Hughes
Nat. Hazards Earth Syst. Sci., 20, 451–470, https://doi.org/10.5194/nhess-20-451-2020, https://doi.org/10.5194/nhess-20-451-2020, 2020
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Post-event field survey data from two tsunami events, the 2011 Tōhoku tsunami, Japan, and the 2015 Illapel tsunami, Chile, are used in this study to develop fragility functions for roads and bridges. This study demonstrates the effectiveness of supplementing post-event field surveys with remotely sensed data. The resulting fragility functions address a substantial research gap in tsunami impacts on infrastructure and include a range of subtleties in asset and hazard characteristics.
Yuepeng Cui, Daan Liang, and Bradley Ewing
Nat. Hazards Earth Syst. Sci., 20, 413–424, https://doi.org/10.5194/nhess-20-413-2020, https://doi.org/10.5194/nhess-20-413-2020, 2020
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The methodology presented in this paper is considered an important entry point to addressing the complex problems related to disaster resilience. Regardless of storms, hurricane impact on local employment is found to be either temporary or permanent in nature. Relating the concept of resilience to observable socioeconomic activities helps us gain a deeper understanding of the drivers and processes of post-storm recovery. Studies play a major role in bridging knowledge gaps.
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.
Philippe Weyrich, Elena Mondino, Marco Borga, Giuliano Di Baldassarre, Anthony Patt, and Anna Scolobig
Nat. Hazards Earth Syst. Sci., 20, 287–298, https://doi.org/10.5194/nhess-20-287-2020, https://doi.org/10.5194/nhess-20-287-2020, 2020
Laddaporn Ruangpan, Zoran Vojinovic, Silvana Di Sabatino, Laura Sandra Leo, Vittoria Capobianco, Amy M. P. Oen, Michael E. McClain, and Elena Lopez-Gunn
Nat. Hazards Earth Syst. Sci., 20, 243–270, https://doi.org/10.5194/nhess-20-243-2020, https://doi.org/10.5194/nhess-20-243-2020, 2020
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This article aims to provide a critical review of the literature and indicate some directions for future research based on the current knowledge gaps in the area of nature-based solutions (NBSs) for hydro-meteorological risk reduction. The final full analysis was performed on 146 closely related articles. A review showed that many advancements related to NBSs have been made to date, but there are still many challenges that will play an important role in extending knowledge in the coming years.
Lena Lankenau, Christopher Massolle, Bärbel Koppe, and Veronique Krull
Nat. Hazards Earth Syst. Sci., 20, 197–220, https://doi.org/10.5194/nhess-20-197-2020, https://doi.org/10.5194/nhess-20-197-2020, 2020
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Sandbag and sandbag replacement systems (SBRSs) for flood defence are compared in terms of functionality (practical tests), costs, time, helpers and logistics (fictitious realistic scenarios). SBRSs are comparable in their functionality to sandbagging. All of the SBRSs considered show time-saving and logistical advantages. Under the assumed conditions, the higher investment costs of the SBRSs are offset with one subsequent reuse of the system owing to lower costs for helpers and logistics.
Yuhan Yang, Jie Yin, Mingwu Ye, Dunxian She, and Jia Yu
Nat. Hazards Earth Syst. Sci., 20, 181–195, https://doi.org/10.5194/nhess-20-181-2020, https://doi.org/10.5194/nhess-20-181-2020, 2020
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Emergency medical service (EMS) response is important for pre-hospital lifesaving, but disasters increase the difficulty of rescue, which increases the pressure on EMS facilities. In order to avoid the failure of EMS facilities during disasters, we propose a multi-coverage optimal location model for EMS facilities based on results of disaster risk assessment. Results showed that the optimized EMS locations reduced the delay in response and significantly increased the number of rescued people.
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Short summary
Rockfall hazard zoning analyses can be based on qualitative observations. For this reason, expertise is of great importance in determining the hazard. To test this hypothesis, an experiment is proposed to evaluate the importance of subjective assessment: three populations with different level of expertise assessed the level of rockfall hazard on three sites using a qualitative and a quantitative method. A statistical analysis shows that there is a non-significant influence of the level of expertise.
Rockfall hazard zoning analyses can be based on qualitative observations. For this reason,...
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