Assessing the exposure to floods to estimate the risk of flood-related damage in French Mediterranean basins

Martin, Claude; Fouchier, Catherine; Javelle, Pierre; Douvinet, Johnny; Vinet, Freddy

doi:10.1051/e3sconf/20160704013

Cited by 21 publications

(19 citation statements)

References 18 publications

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“…In this scenario low population growth is expected in industrialized countries, while a high increase can be found in developing countries . This explains the difference between the results found in studies such as Samir and Lutz (2017), in which the highest global population expected growth is found for this scenario.…”

Section: Population Projectionscontrasting

confidence: 78%

Changes in flood damage with global warming on the eastern coast of Spain

Cortès

Turco

Ward

et al. 2019

Nat. Hazards Earth Syst. Sci.

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Abstract. Flooding is one of the main natural hazards in the world and causes huge economic and human impacts. Assessing the flood damage in the Mediterranean region is of great importance, especially because of its large vulnerability to climate change. Most past floods affecting the region were caused by intense precipitation events; thus the analysis of the links between precipitation and flood damage is crucial. The main objective of this paper is to estimate changes in the probability of damaging flood events with global warming of 1.5, 2 and 3 ∘C above pre-industrial levels and taking into account different socioeconomic scenarios in two western Mediterranean regions, namely Catalonia and the Valencian Community. To do this, we analyse the relationship between heavy precipitation and flood-damage estimates from insurance datasets in those two regions. We consider an ensemble of seven regional climate model (RCM) simulations spanning the period 1976–2100 to evaluate precipitation changes and to drive a logistic model that links precipitation and flood-damage estimates, thus deriving statistics under present and future climates. Furthermore, we incorporate population projections based on five different socioeconomic scenarios. The results show a general increase in the probability of a damaging event for most of the cases and in both regions of study, with larger increments when higher warming is considered. Moreover, this increase is higher when both climate and population change are included. When population is considered, all the periods and models show a clearly higher increase in the probability of damaging events, which is statistically significant for most of the cases. Our findings highlight the need for limiting global warming as much as possible as well as the importance of including variables that consider change in both climate and socioeconomic conditions in the analysis of flood damage.

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Section: Population Projectionscontrasting

confidence: 78%

Changes in flood damage with global warming on the eastern coast of Spain

Cortès

Turco

Ward

et al. 2019

Nat. Hazards Earth Syst. Sci.

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“…For instance, DamaGIS has already been used in this regard in Saint-Martin et al (2016). Currently flood damage data are needed to calibrate and validate flood damage models at a fine scale.…”

Section: Perspectivesmentioning

confidence: 99%

DamaGIS: a multisource geodatabase for collection of flood-related damage data

Saint-Martin

Javelle

Vinet

2018

Earth Syst. Sci. Data

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Abstract. Every year in France, recurring flood events result in several million euros of damage, and reducing the heavy consequences of floods has become a high priority. However, actions to reduce the impact of floods are often hindered by the lack of damage data on past flood events. The present paper introduces a new database for collection and assessment of flood-related damage. The DamaGIS database offers an innovative bottom-up approach to gather and identify damage data from multiple sources, including new media. The study area has been defined as the south of France considering the high frequency of floods over the past years. This paper presents the structure and contents of the database. It also presents operating instructions in order to keep collecting damage data within the database. This paper also describes an easily reproducible method to assess the severity of flood damage regardless of the location or date of occurrence. A first analysis of the damage contents is also provided in order to assess data quality and the relevance of the database. According to this analysis, despite its lack of comprehensiveness, the DamaGIS database presents many advantages. Indeed, DamaGIS provides a high accuracy of data as well as simplicity of use. It also has the additional benefit of being accessible in multiple formats and is open access. The DamaGIS database is available at https://doi.org/10.5281/zenodo.1241089.

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“…This approach also makes it possible to obtain objective information on damage severity. Different studies suggest that the analysis of damage severity over time and space is made difficult by the absence or low quality of 20 available databases on flood damage and the lack of consensus upon flood data collection (Sene, 2012). With the DamaGIS database, this type of approach is made possible by using a simple rating scale operating on a range of damage indicators.…”

Section: The Rating System For Flood-related Damagementioning

confidence: 99%

DamaGIS: a multisource geodatabase for collection of flood-related damage data

Saint-Martin¹,

Javelle²,

Vinet³

2018

Preprint

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Abstract. The present paper introduces a new database for collection of flood-related damage and assessment at the local scale. Every year in France, recurring flood events result in several million Euros of damage, and reducing the heavy consequences of floods has become a high priority. However, actions to reduce the impact of floods are often hindered by the 10 lack of damage data on past flood events. Even if partial data were available, data sharing within the research community is very limited and closely supervised to ensure the protection of individuals' personal information. In comparison, the growth of social and online media has provided access to broad information at the local and global scales. Therefore, the DamaGIS database offers an innovative bottom-up approach to gather and identify damage data from multiple sources, including new media. This paper also presents an easily reproducible method to assess the severity of flood damage. The DamaGIS database 15 is available at https://doi.org/10.5281/zenodo.1186623.

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Assessing the exposure to floods to estimate the risk of flood-related damage in French Mediterranean basins

Cited by 21 publications

References 18 publications

Changes in flood damage with global warming on the eastern coast of Spain

Changes in flood damage with global warming on the eastern coast of Spain

DamaGIS: a multisource geodatabase for collection of flood-related damage data

DamaGIS: a multisource geodatabase for collection of flood-related damage data

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