Future risk and adaptation in coastal cities
Future risk and adaptation in coastal cities
Editor(s): Matthias Garschagen, Liang Emlyn Yang, Javier Revilla Diez, and Paolo Tarolli
Coastal cities are hotspots of risks related to natural hazards. Already today, many of these cities face high economic and non-economic losses from disasters and creeping environmental changes. However, risks in coastal cities are expected to rise even further, fuelled by the interplay of two global mega-trends: climate change and continued coastal urbanization. The question of how to adapt cities to the hazards of the future is therefore of great concern – not only for scientists, but also for policy makers and risk practitioners. The relevance of this question even increases when considering the central role of coastal cities in economies and societies at the global scale, for instance, in terms of trade, transport, and culture.

However, a number of important scientific knowledge gaps persist with regards to risk assessment and adaptation analysis in coastal cities. While the assessment of future risk trends in these cities is predominantly focused on scenarios of future hazards (sea level rise, floods, typhoons, etc.), scenarios of socio-economic changes and hence future trends in exposure and vulnerability are typically not part of the picture due to a lack either of awareness or adequate methods and data. This lack is significant and leads to potentially flawed and imprecise assessments of future risk trends and eventually adaptation needs. Secondly, knowledge on the feasibility of different – often competing – adaptation options remains thin. It is too often based on a reductionist set of evaluation criteria, e.g. economic costs and benefits, and a view towards singular adaptation measures, e.g. hard coastal protection. Integrative and comparative assessments that evaluate different adaptation options (e.g. retreat vs. flood accommodation) against a wider set of criteria such as social acceptance or political feasibility are still poorly developed. Thirdly, scientific engagement with coastal urban risk too often remains within siloes of different disciplines (engineering, sociology, economics, planning, etc.). This hampers interdisciplinary assessments and leads to significant blind spots, e.g. with respect to private sector adaptation or collective action for adaptation across different groups of actors.

The special issue aims at making a significant contribution towards closing these knowledge gaps. It is open to theoretical, methodological, and empirical contributions and will combine a mixture of research articles, review articles, and brief communications. Submissions for all these manuscript types are therefore welcome. Both local case studies from across the globe as well as regional- or and global-level perspectives are invited. The special issue is particularly interested in contributions that draw on combined perspectives from different disciplines. A particular focus will be on coastal cities with high growth dynamics and adaptation pressure, as can be observed in many transition economies of Asia and Africa.

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04 Oct 2023
Micro business participation in collective flood adaptation. Lessons from scenario-based analysis in Ho Chi Minh City, Vietnam
Javier Revilla Diez, Roxana Leitold, Van Tran, and Matthias Garschagen
EGUsphere, https://doi.org/10.5194/egusphere-2023-2185,https://doi.org/10.5194/egusphere-2023-2185, 2023
Revised manuscript accepted for NHESS (discussion: final response, 4 comments)
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26 Jun 2023
Low-regret climate change adaptation in coastal megacities – evaluating large-scale flood protection and small-scale rainwater detention measures for Ho Chi Minh City, Vietnam
Leon Scheiber, Christoph Gabriel David, Mazen Hoballah Jalloul, Jan Visscher, Hong Quan Nguyen, Roxana Leitold, Javier Revilla Diez, and Torsten Schlurmann
Nat. Hazards Earth Syst. Sci., 23, 2333–2347, https://doi.org/10.5194/nhess-23-2333-2023,https://doi.org/10.5194/nhess-23-2333-2023, 2023
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26 Jun 2023
The potential of open-access data for flood estimations: uncovering inundation hotspots in Ho Chi Minh City, Vietnam, through a normalized flood severity index
Leon Scheiber, Mazen Hoballah Jalloul, Christian Jordan, Jan Visscher, Hong Quan Nguyen, and Torsten Schlurmann
Nat. Hazards Earth Syst. Sci., 23, 2313–2332, https://doi.org/10.5194/nhess-23-2313-2023,https://doi.org/10.5194/nhess-23-2313-2023, 2023
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16 Mar 2023
Identifying the drivers of private flood precautionary measures in Ho Chi Minh City, Vietnam
Thulasi Vishwanath Harish, Nivedita Sairam, Liang Emlyn Yang, Matthias Garschagen, and Heidi Kreibich
Nat. Hazards Earth Syst. Sci., 23, 1125–1138, https://doi.org/10.5194/nhess-23-1125-2023,https://doi.org/10.5194/nhess-23-1125-2023, 2023
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12 Oct 2023
Assessment of building damage and risk under extreme flood scenarios in Shanghai
Jiachang Tu, Jiahong Wen, Liang Emlyn Yang, Andrea Reimuth, Stephen S. Young, Min Zhang, Luyang Wang, and Matthias Garschagen
Nat. Hazards Earth Syst. Sci., 23, 3247–3260, https://doi.org/10.5194/nhess-23-3247-2023,https://doi.org/10.5194/nhess-23-3247-2023, 2023
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12 Aug 2022
Comparison of sustainable flood risk management by four countries – the United Kingdom, the Netherlands, the United States, and Japan – and the implications for Asian coastal megacities
Faith Ka Shun Chan, Liang Emlyn Yang, Gordon Mitchell, Nigel Wright, Mingfu Guan, Xiaohui Lu, Zilin Wang, Burrell Montz, and Olalekan Adekola
Nat. Hazards Earth Syst. Sci., 22, 2567–2588, https://doi.org/10.5194/nhess-22-2567-2022,https://doi.org/10.5194/nhess-22-2567-2022, 2022
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28 Nov 2022
Multi-scenario urban flood risk assessment by integrating future land use change models and hydrodynamic models
Qinke Sun, Jiayi Fang, Xuewei Dang, Kepeng Xu, Yongqiang Fang, Xia Li, and Min Liu
Nat. Hazards Earth Syst. Sci., 22, 3815–3829, https://doi.org/10.5194/nhess-22-3815-2022,https://doi.org/10.5194/nhess-22-3815-2022, 2022
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02 Dec 2021
Exploring the partial use of the Mo.S.E. system as effective adaptation to rising flood frequency of Venice
Riccardo A. Mel
Nat. Hazards Earth Syst. Sci., 21, 3629–3644, https://doi.org/10.5194/nhess-21-3629-2021,https://doi.org/10.5194/nhess-21-3629-2021, 2021
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26 Nov 2021
Variable-resolution building exposure modelling for earthquake and tsunami scenario-based risk assessment: an application case in Lima, Peru
Juan Camilo Gomez-Zapata, Nils Brinckmann, Sven Harig, Raquel Zafrir, Massimiliano Pittore, Fabrice Cotton, and Andrey Babeyko
Nat. Hazards Earth Syst. Sci., 21, 3599–3628, https://doi.org/10.5194/nhess-21-3599-2021,https://doi.org/10.5194/nhess-21-3599-2021, 2021
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26 Aug 2021
A paradigm of extreme rainfall pluvial floods in complex urban areas: the flood event of 15 July 2020 in Palermo (Italy)
Antonio Francipane, Dario Pumo, Marco Sinagra, Goffredo La Loggia, and Leonardo Valerio Noto
Nat. Hazards Earth Syst. Sci., 21, 2563–2580, https://doi.org/10.5194/nhess-21-2563-2021,https://doi.org/10.5194/nhess-21-2563-2021, 2021
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04 Nov 2021
Review article: Mapping the adaptation solution space – lessons from Jakarta
Mia Wannewitz and Matthias Garschagen
Nat. Hazards Earth Syst. Sci., 21, 3285–3322, https://doi.org/10.5194/nhess-21-3285-2021,https://doi.org/10.5194/nhess-21-3285-2021, 2021
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