Articles | Volume 13, issue 11
https://doi.org/10.5194/nhess-13-3049-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/nhess-13-3049-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
29 Nov 2013
Research article |
| 29 Nov 2013
Mapping wave set-up near a complex geometric urban coastline
T. Soomere
Institute of Cybernetics at Tallinn University of Technology, Tallinn, Estonia
Estonian Academy of Sciences, Tallinn, Estonia
K. Pindsoo
Institute of Cybernetics at Tallinn University of Technology, Tallinn, Estonia
S. R. Bishop
Mathematics Department, University College London, London, UK
A. Käärd
Municipal Engineering Services Department, Tallinn, Estonia
A. Valdmann
Municipal Engineering Services Department, Tallinn, Estonia
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Ocean Sci., 16, 1047–1065, https://doi.org/10.5194/os-16-1047-2020, https://doi.org/10.5194/os-16-1047-2020, 2020
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Extreme water levels are often created by several drivers with different properties. For example, the contribution from the water volume of the Baltic Sea follows a Gaussian distribution, but storm surges represent a Poisson process. We show that wave set-up heights (the third major component of high water levels) usually follow an exponential distribution and thus also represent a Poisson process. However, at some locations set-up heights better match an inverse Gaussian (Wald) distribution.
Oxana Kurkina, Tatyana Talipova, Tarmo Soomere, Ayrat Giniyatullin, and Andrey Kurkin
Nonlin. Processes Geophys., 24, 645–660, https://doi.org/10.5194/npg-24-645-2017, https://doi.org/10.5194/npg-24-645-2017, 2017
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Nadezhda Kudryavtseva and Tarmo Soomere
Earth Syst. Dynam., 8, 697–706, https://doi.org/10.5194/esd-8-697-2017, https://doi.org/10.5194/esd-8-697-2017, 2017
Short summary
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Tarmo Soomere and Katri Pindsoo
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2016-76, https://doi.org/10.5194/esd-2016-76, 2017
Revised manuscript not accepted
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Wave-induced set-up is a nonlinear phenomenon that results in a rise in the mean water level at the waterline and may contribute to the formation of coastal flooding. We study the shape of probability distribution of the wave set-up heights near Tallinn in the Baltic Sea. Resulted distribution deviates from the ones that usually reflect the wave heights, this signals that extreme set-up events are more probable that it could be expected from the probability of occurrence of severe seas.
O. E. Kurkina, A. A. Kurkin, E. A. Rouvinskaya, and T. Soomere
Nonlin. Processes Geophys., 22, 117–132, https://doi.org/10.5194/npg-22-117-2015, https://doi.org/10.5194/npg-22-117-2015, 2015
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Changes in sea levels alone do not determine the evolution of coastal hazards. Coastal hazard changes should be assessed using additional factors describing geomorphological configurations, metocean event types (storms, cyclones, long swells, and tsunamis), and the marine environment (e.g., coral reef state and sea ice extent). The assessment completed here, at regional scale including the coasts of mainland and overseas France, highlights significant differences in hazard changes.
Alisée A. Chaigneau, Melisa Menéndez, Marta Ramírez-Pérez, and Alexandra Toimil
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2024-100, https://doi.org/10.5194/nhess-2024-100, 2024
Revised manuscript accepted for NHESS
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Tropical cyclones drive extreme sea levels, causing large storm surges due to low atmospheric pressure and strong winds. This study explores factors affecting the numerical modelling of storm surges induced by hurricanes in the tropical Atlantic. Two ocean models are compared and used for sensitivity experiments. ERA5 atmospheric reanalysis forcing generally improves storm surge estimates compared to parametric wind models. Including ocean circulations reduces errors in storm surge estimates.
Jani Särkkä, Jani Räihä, Mika Rantanen, and Matti Kämäräinen
Nat. Hazards Earth Syst. Sci., 24, 1835–1842, https://doi.org/10.5194/nhess-24-1835-2024, https://doi.org/10.5194/nhess-24-1835-2024, 2024
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We study the relationship between tracks of low-pressure systems and related sea level extremes. We perform the studies by introducing a method to simulate sea levels using synthetic low-pressure systems. We test the method using sites located along the Baltic Sea coast. We find high extremes, where the sea level extreme reaches up to 3.5 m. In addition, we add the maximal value of the mean level of the Baltic Sea (1 m), leading to a sea level of 4.5 m.
Alexey Androsov, Sven Harig, Natalia Zamora, Kim Knauer, and Natalja Rakowsky
Nat. Hazards Earth Syst. Sci., 24, 1635–1656, https://doi.org/10.5194/nhess-24-1635-2024, https://doi.org/10.5194/nhess-24-1635-2024, 2024
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Two numerical codes are used in a comparative analysis of the calculation of the tsunami wave due to an earthquake along the Peruvian coast. The comparison primarily evaluates the flow velocity fields in flooded areas. The relative importance of the various parts of the equations is determined, focusing on the nonlinear terms. The influence of the nonlinearity on the degree and volume of flooding, flow velocity, and small-scale fluctuations is determined.
Alisée A. Chaigneau, Angélique Melet, Aurore Voldoire, Guillaume Reffray, Stéphane Law-Chune, and Lotfi Aouf
EGUsphere, https://doi.org/10.5194/egusphere-2024-1061, https://doi.org/10.5194/egusphere-2024-1061, 2024
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Climate change induced sea level rise increases the frequency of extreme sea levels. This paper presents regional projections of extreme sea levels for western Europe produced with high-resolution models (~6 km). Unlike commonly used coarse-scale global climate models, this approach allows to simulate key processes driving coastal sea level variations such as long-term sea level rise, tides, storm surges induced by low atmospheric surface pressure and winds, waves, and their interactions.
Eric Mortensen, Timothy Tiggeloven, Toon Haer, Bas van Bemmel, Dewi Le Bars, Sanne Muis, Dirk Eilander, Frederiek Sperna Weiland, Arno Bouwman, Willem Ligtvoet, and Philip J. Ward
Nat. Hazards Earth Syst. Sci., 24, 1381–1400, https://doi.org/10.5194/nhess-24-1381-2024, https://doi.org/10.5194/nhess-24-1381-2024, 2024
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Current levels of coastal flood risk are projected to increase in coming decades due to various reasons, e.g. sea-level rise, land subsidence, and coastal urbanization: action is needed to minimize this future risk. We evaluate dykes and coastal levees, foreshore vegetation, zoning restrictions, and dry-proofing on a global scale to estimate what levels of risk reductions are possible. We demonstrate that there are several potential adaptation pathways forward for certain areas of the world.
Charlotte Lyddon, Nguyen Chien, Grigorios Vasilopoulos, Michael Ridgill, Sogol Moradian, Agnieszka Olbert, Thomas Coulthard, Andrew Barkwith, and Peter Robins
Nat. Hazards Earth Syst. Sci., 24, 973–997, https://doi.org/10.5194/nhess-24-973-2024, https://doi.org/10.5194/nhess-24-973-2024, 2024
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Recent storms in the UK, like Storm Ciara in 2020, show how vulnerable estuaries are to the combined effect of sea level and river discharge. We show the combinations of sea levels and river discharges that cause flooding in the Conwy estuary, N Wales. The results showed flooding was amplified under moderate conditions in the middle estuary and elsewhere sea state or river flow dominated the hazard. Combined sea and river thresholds can improve prediction and early warning of compound flooding.
Christopher Stokes, Timothy Poate, Gerd Masselink, Tim Scott, and Steve Instance
EGUsphere, https://doi.org/10.5194/egusphere-2024-482, https://doi.org/10.5194/egusphere-2024-482, 2024
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Currents at beaches with an estuary mouth have rarely been studied before. Using field measurements and computer modelling, we show that surfzone currents can be driven by both estuary flow and rip currents. We show that an estuary mouth beach can have flows reaching 1.5 m/s and have a high likelihood of taking bathers out of the surfzone. The river channels on the beach direct the flows and even though they change position over time, it was possible to predict when peak hazards would occur.
Shuaib Rasheed, Simon C. Warder, Yves Plancherel, and Matthew D. Piggott
Nat. Hazards Earth Syst. Sci., 24, 737–755, https://doi.org/10.5194/nhess-24-737-2024, https://doi.org/10.5194/nhess-24-737-2024, 2024
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Here we use a high-resolution bathymetry dataset of the Maldives archipelago, as well as corresponding high numerical model resolution, to carry out a scenario-based tsunami hazard assessment for the entire Maldives archipelago to investigate the potential impact of plausible far-field tsunamis across the Indian Ocean at the island scale. The results indicate that several factors contribute to mitigating and amplifying tsunami waves at the island scale.
Niels J. Korsgaard, Kristian Svennevig, Anne S. Søndergaard, Gregor Luetzenburg, Mimmi Oksman, and Nicolaj K. Larsen
Nat. Hazards Earth Syst. Sci., 24, 757–772, https://doi.org/10.5194/nhess-24-757-2024, https://doi.org/10.5194/nhess-24-757-2024, 2024
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A tsunami wave will leave evidence of erosion and deposition in coastal lakes, making it possible to determine the runup height and when it occurred. Here, we use four lakes now located at elevations of 19–91 m a.s.l. close to the settlement of Saqqaq, West Greenland, to show that at least two giant tsunamis occurred 7300–7600 years ago with runup heights larger than 40 m. We infer that any tsunamis from at least nine giga-scale landslides must have happened 8500–10 000 years ago.
Elke Magda Inge Meyer and Lidia Gaslikova
Nat. Hazards Earth Syst. Sci., 24, 481–499, https://doi.org/10.5194/nhess-24-481-2024, https://doi.org/10.5194/nhess-24-481-2024, 2024
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Storm tides for eight extreme historical storms in the German Bight are modelled using sets of slightly varying atmospheric conditions from the century reanalyses. Comparisons with the water level observations from the gauges Norderney, Cuxhaven and Husum show that single members of the reanalyses are suitable for the reconstruction of extreme storms. Storms with more northerly tracks show less variability within a set and have more potential for accurate reconstruction of extreme water levels.
Clare Lewis, Tim Smyth, Jess Neumann, and Hannah Cloke
Nat. Hazards Earth Syst. Sci., 24, 121–131, https://doi.org/10.5194/nhess-24-121-2024, https://doi.org/10.5194/nhess-24-121-2024, 2024
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Meteotsunami are the result of atmospheric disturbances and can impact coastlines causing injury, loss of life, and damage to assets. This paper introduces a novel intensity index to allow for the quantification of these events at the shoreline. This has the potential to assist in the field of natural hazard assessment. It was trialled in the UK but designed for global applicability and to become a widely accepted standard in coastal planning, meteotsunami forecasting, and early warning systems.
Chu-En Hsu, Katherine A. Serafin, Xiao Yu, Christie A. Hegermiller, John C. Warner, and Maitane Olabarrieta
Nat. Hazards Earth Syst. Sci., 23, 3895–3912, https://doi.org/10.5194/nhess-23-3895-2023, https://doi.org/10.5194/nhess-23-3895-2023, 2023
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Total water levels (TWLs) induced by tropical cyclones (TCs) are among the leading hazards faced by coastal communities. Using numerical models, we examined how TWL components (surge and wave runup) along the South Atlantic Bight varied during hurricanes Matthew (2016), Dorian (2019), and Isaias (2020). Peak surge and peak wave runup were dominated by wind speeds and relative positions to TCs. The exceedance time of TWLs was controlled by normalized distances to TC and TC translation speeds.
Enrico Duo, Juan Montes, Marine Le Gal, Tomás Fernández-Montblanc, Paolo Ciavola, and Clara Armaroli
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-197, https://doi.org/10.5194/nhess-2023-197, 2023
Revised manuscript accepted for NHESS
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The present work, developed within the EU H2020 European Coastal Flood Awareness System ECFAS project, presents an approach used to estimate coastal flood direct impacts on population, buildings, and roads along the European coasts. The findings demonstrate that the ECFAS Impact approach offers valuable estimates for affected populations, reliable damage assessments for buildings and roads, and improved accuracy compared to traditional grid-based approaches.
Maude Biguenet, Eric Chaumillon, Pierre Sabatier, Antoine Bastien, Emeline Geba, Fabien Arnaud, Thibault Coulombier, and Nathalie Feuillet
Nat. Hazards Earth Syst. Sci., 23, 3761–3788, https://doi.org/10.5194/nhess-23-3761-2023, https://doi.org/10.5194/nhess-23-3761-2023, 2023
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This work documents the impact of Hurricane Irma (2017) on the Codrington barrier and lagoon on Barbuda Island. Irma caused two wide breaches in the sandy barrier, which remained unopened for 250 years. The thick and extensive sand sheet at the top of the lagoon fill was attributed to Irma. This unique deposit in a 3700-year record confirms Irma's exceptional character. This case study illustrates the consequences of high-intensity hurricanes in low-lying islands in a global warming context.
Leigh Richard MacPherson, Arne Arns, Svenja Fischer, Fernando Javier Méndez, and Jürgen Jensen
Nat. Hazards Earth Syst. Sci., 23, 3685–3701, https://doi.org/10.5194/nhess-23-3685-2023, https://doi.org/10.5194/nhess-23-3685-2023, 2023
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Efficient adaptation planning for coastal flooding caused by extreme sea levels requires accurate assessments of the underlying hazard. Tide-gauge data alone are often insufficient for providing the desired accuracy but may be supplemented with historical information. We estimate extreme sea levels along the German Baltic coast and show that relying solely on tide-gauge data leads to underestimations. Incorporating historical information leads to improved estimates with reduced uncertainties.
Anne Margaret H. Smiley, Suzanne P. Thompson, Nathan S. Hall, and Michael F. Piehler
Nat. Hazards Earth Syst. Sci., 23, 3635–3649, https://doi.org/10.5194/nhess-23-3635-2023, https://doi.org/10.5194/nhess-23-3635-2023, 2023
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Floodwaters can deliver reactive nitrogen to sensitive aquatic systems and diminish water quality. We assessed the nitrogen removal capabilities of flooded habitats and urban landscapes. Differences in processing rates across land cover treatments and between nutrient treatments suggest that abundance and spatial distributions of habitats, as well as storm characteristics, influence landscape-scale nitrogen removal. Results have important implications for coastal development and climate change.
Marine Le Gal, Tomás Fernández-Montblanc, Enrico Duo, Juan Montes Perez, Paulo Cabrita, Paola Souto Ceccon, Véra Gastal, Paolo Ciavola, and Clara Armaroli
Nat. Hazards Earth Syst. Sci., 23, 3585–3602, https://doi.org/10.5194/nhess-23-3585-2023, https://doi.org/10.5194/nhess-23-3585-2023, 2023
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Assessing coastal hazards is crucial to mitigate flooding disasters. In this regard, coastal flood databases are valuable tools. This paper describes a new coastal flood map catalogue covering the entire European coastline, as well as the methodology to build it and its accuracy. The catalogue focuses on frequent extreme events and relies on synthetic scenarios estimated from local storm conditions. Flood-prone areas and regions sensitive to storm duration and water level peak were identified.
Neng-Ti Yu, Cheng-Hao Lu, I-Chin Yen, Jia-Hong Chen, Jiun-Yee Yen, and Shyh-Jeng Chyi
Nat. Hazards Earth Syst. Sci., 23, 3525–3542, https://doi.org/10.5194/nhess-23-3525-2023, https://doi.org/10.5194/nhess-23-3525-2023, 2023
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A paleotsunami deposit of cliff-top basalt debris was identified on the Penghu Islands in the southern Taiwan Strait and related to the 1661 earthquake in southwest Taiwan. A minimum wave height of 3.2 m is estimated to have rotated the biggest boulder for over 30 m landwards onto the cliff top at 2.5 m a.s.l. The event must have been huge compared to the 1994 M 6.4 earthquake with the ensuing 0.4 m high tsunami in the same area, validating the intimidating tsunami risks in the South China Sea.
Ye Yuan, Huaiwei Yang, Fujiang Yu, Yi Gao, Benxia Li, and Chuang Xing
Nat. Hazards Earth Syst. Sci., 23, 3487–3507, https://doi.org/10.5194/nhess-23-3487-2023, https://doi.org/10.5194/nhess-23-3487-2023, 2023
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Rip currents are narrow jets of offshore-directed flow that originated in the surf zone, which can take swimmers of all ability levels into deeper water unawares. In this study, a 1 m fine-resolution wave-resolving model was configured to study rip current variability and the optimal swimmer escape strategies. Multiple factors contribute to the survival of swimmers. However, for weak-to-moderate rip and longshore currents, swimming onshore consistently seems to be the most successful strategy.
Benedikt Mester, Thomas Vogt, Seth Bryant, Christian Otto, Katja Frieler, and Jacob Schewe
Nat. Hazards Earth Syst. Sci., 23, 3467–3485, https://doi.org/10.5194/nhess-23-3467-2023, https://doi.org/10.5194/nhess-23-3467-2023, 2023
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In 2019, Cyclone Idai displaced more than 478 000 people in Mozambique. In our study, we use coastal flood modeling and satellite imagery to construct a counterfactual cyclone event without the effects of climate change. We show that 12 600–14 900 displacements can be attributed to sea level rise and the intensification of storm wind speeds due to global warming. Our impact attribution study is the first one on human displacement and one of very few for a low-income country.
Bene Aschenneller, Roelof Rietbroek, and Daphne van der Wal
EGUsphere, https://doi.org/10.5194/egusphere-2023-2320, https://doi.org/10.5194/egusphere-2023-2320, 2023
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Shorelines retreat or advanve in response to sea level changes, subsidence or uplift of the ground, and morphological processes (sedimentation and erosion). We show that the geometrical influence of each of these drivers on shoreline movements can be quantified by combining different remote sensing observations, including radar altimetry, LiDAR and optical satellite images. The focus here is to illustrate the uncertainties of these observations by comparing datasets that cover similar processes.
Olivier Cavalié, Frédéric Cappa, and Béatrice Pinel-Puysségur
Nat. Hazards Earth Syst. Sci., 23, 3235–3246, https://doi.org/10.5194/nhess-23-3235-2023, https://doi.org/10.5194/nhess-23-3235-2023, 2023
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Coastal areas are fragile ecosystems that face multiple hazards. In this study, we measured the downward motion of the Nice Côte d'Azur Airport (France) that was built on reclaimed area and found that it has subsided from 16 mm yr-1 in the 1990s to 8 mm yr-1 today. A continuous remote monitoring of the platform will provide key data for a detailed investigation of future subsidence maps, and this contribution will help to evaluate the potential failure of part of the airport platform.
Wagner L. L. Costa, Karin R. Bryan, and Giovanni Coco
Nat. Hazards Earth Syst. Sci., 23, 3125–3146, https://doi.org/10.5194/nhess-23-3125-2023, https://doi.org/10.5194/nhess-23-3125-2023, 2023
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For predicting flooding events at the coast, topo-bathymetric data are essential. However, elevation data can be unavailable. To tackle this issue, recent efforts have centred on the use of satellite-derived topography (SDT) and bathymetry (SDB). This work is aimed at evaluating their accuracy and use for flooding prediction in enclosed estuaries. Results show that the use of SDT and SDB in numerical modelling can produce similar predictions when compared to the surveyed elevation data.
Joshua Kiesel, Marvin Lorenz, Marcel König, Ulf Gräwe, and Athanasios T. Vafeidis
Nat. Hazards Earth Syst. Sci., 23, 2961–2985, https://doi.org/10.5194/nhess-23-2961-2023, https://doi.org/10.5194/nhess-23-2961-2023, 2023
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Among the Baltic Sea littoral states, Germany is anticipated to experience considerable damage as a result of increased coastal flooding due to sea-level rise (SLR). Here we apply a new modelling framework to simulate how flooding along the German Baltic Sea coast may change until 2100 if dikes are not upgraded. We find that the study region is highly exposed to flooding, and we emphasise the importance of current plans to update coastal protection in the future.
Zhang Haixia, Cheng Meng, and Fang Weihua
Nat. Hazards Earth Syst. Sci., 23, 2697–2717, https://doi.org/10.5194/nhess-23-2697-2023, https://doi.org/10.5194/nhess-23-2697-2023, 2023
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Simultaneous storm surge and waves can cause great damage due to cascading effects. Quantitative joint probability analysis is critical to determine their optimal protection design values. The joint probability of the surge and wave for the eastern coasts of Leizhou Peninsula and Hainan are estimated with a Gumbel copula based on 62 years of numerically simulated data, and the optimal design values under various joint return periods are derived using the non-linear programming method.
Clare Lewis, Tim Smyth, David Williams, Jess Neumann, and Hannah Cloke
Nat. Hazards Earth Syst. Sci., 23, 2531–2546, https://doi.org/10.5194/nhess-23-2531-2023, https://doi.org/10.5194/nhess-23-2531-2023, 2023
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Meteotsunami are globally occurring water waves initiated by atmospheric disturbances. Previous research has suggested that in the UK, meteotsunami are a rare phenomenon and tend to occur in the summer months. This article presents a revised and updated catalogue of 98 meteotsunami that occurred between 1750 and 2022. Results also demonstrate a larger percentage of winter events and a geographical pattern highlighting the
hotspotregions that experience these events.
Melissa Wood, Ivan D. Haigh, Quan Quan Le, Hung Nghia Nguyen, Hoang Ba Tran, Stephen E. Darby, Robert Marsh, Nikolaos Skliris, Joël J.-M. Hirschi, Robert J. Nicholls, and Nadia Bloemendaal
Nat. Hazards Earth Syst. Sci., 23, 2475–2504, https://doi.org/10.5194/nhess-23-2475-2023, https://doi.org/10.5194/nhess-23-2475-2023, 2023
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We used a novel database of simulated tropical cyclone tracks to explore whether typhoon-induced storm surges present a future flood risk to low-lying coastal communities around the South China Sea. We found that future climate change is likely to change tropical cyclone behaviour to an extent that this increases the severity and frequency of storm surges to Vietnam, southern China, and Thailand. Consequently, coastal flood defences need to be reviewed for resilience against this future hazard.
Sang-Guk Yum, Moon-Soo Song, and Manik Das Adhikari
Nat. Hazards Earth Syst. Sci., 23, 2449–2474, https://doi.org/10.5194/nhess-23-2449-2023, https://doi.org/10.5194/nhess-23-2449-2023, 2023
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This study performed analysis on typhoon-induced coastal morphodynamics for the Mokpo coast. Wetland vegetation was severely impacted by Typhoon Soulik, with 87.35 % of shoreline transects experiencing seaward migration. This result highlights the fact that sediment resuspension controls the land alteration process over the typhoon period. The land accretion process dominated during the pre- to post-typhoon periods.
Olle Räty, Marko Laine, Ulpu Leijala, Jani Särkkä, and Milla M. Johansson
Nat. Hazards Earth Syst. Sci., 23, 2403–2418, https://doi.org/10.5194/nhess-23-2403-2023, https://doi.org/10.5194/nhess-23-2403-2023, 2023
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We studied annual maximum sea levels in the Finnish coastal region. Our aim was to better quantify the uncertainty in them compared to previous studies. Using four statistical models, we found out that hierarchical models, which shared information on sea-level extremes across Finnish tide gauges, had lower uncertainty in their results in comparison with tide-gauge-specific fits. These models also suggested that the shape of the distribution for extreme sea levels is similar on the Finnish coast.
Christian Ferrarin, Florian Pantillon, Silvio Davolio, Marco Bajo, Mario Marcello Miglietta, Elenio Avolio, Diego S. Carrió, Ioannis Pytharoulis, Claudio Sanchez, Platon Patlakas, Juan Jesús González-Alemán, and Emmanouil Flaounas
Nat. Hazards Earth Syst. Sci., 23, 2273–2287, https://doi.org/10.5194/nhess-23-2273-2023, https://doi.org/10.5194/nhess-23-2273-2023, 2023
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The combined use of meteorological and ocean models enabled the analysis of extreme sea conditions driven by Medicane Ianos, which hit the western coast of Greece on 18 September 2020, flooding and damaging the coast. The large spread associated with the ensemble highlighted the high model uncertainty in simulating such an extreme weather event. The different simulations have been used for outlining hazard scenarios that represent a fundamental component of the coastal risk assessment.
Charline Dalinghaus, Giovanni Coco, and Pablo Higuera
Nat. Hazards Earth Syst. Sci., 23, 2157–2169, https://doi.org/10.5194/nhess-23-2157-2023, https://doi.org/10.5194/nhess-23-2157-2023, 2023
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Wave setup is a critical component of coastal flooding. Consequently, understanding and being able to predict wave setup is vital to protect coastal resources and the population living near the shore. Here, we applied machine learning to improve the accuracy of present predictors of wave setup. The results show that the new predictors outperform existing formulas demonstrating the capability of machine learning models to provide a physically sound description of wave setup.
Ina Teutsch, Markus Brühl, Ralf Weisse, and Sander Wahls
Nat. Hazards Earth Syst. Sci., 23, 2053–2073, https://doi.org/10.5194/nhess-23-2053-2023, https://doi.org/10.5194/nhess-23-2053-2023, 2023
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Rogue waves exceed twice the significant wave height. They occur more often than expected in the shallow waters off Norderney. When applying a nonlinear Fourier transform for the Korteweg–de Vries equation to wave data from Norderney, we found differences in the soliton spectra of time series with and without rogue waves. A strongly outstanding soliton in the spectrum indicated an enhanced probability for rogue waves. We could attribute spectral solitons to the measured rogue waves.
Philipp Heinrich, Stefan Hagemann, Ralf Weisse, Corinna Schrum, Ute Daewel, and Lidia Gaslikova
Nat. Hazards Earth Syst. Sci., 23, 1967–1985, https://doi.org/10.5194/nhess-23-1967-2023, https://doi.org/10.5194/nhess-23-1967-2023, 2023
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High seawater levels co-occurring with high river discharges have the potential to cause destructive flooding. For the past decades, the number of such compound events was larger than expected by pure chance for most of the west-facing coasts in Europe. Additionally rivers with smaller catchments showed higher numbers. In most cases, such events were associated with a large-scale weather pattern characterized by westerly winds and strong rainfall.
Alexander Böhme, Birgit Gerkensmeier, Benedikt Bratz, Clemens Krautwald, Olaf Müller, Nils Goseberg, and Gabriele Gönnert
Nat. Hazards Earth Syst. Sci., 23, 1947–1966, https://doi.org/10.5194/nhess-23-1947-2023, https://doi.org/10.5194/nhess-23-1947-2023, 2023
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External surges in the North Sea are caused by low-pressure cells travelling over the northeast Atlantic. They influence extreme water levels on the German coast and have to be considered in the design process of coastal defence structures. This study collects data about external surges from 1995–2020 and analyses their causes, behaviours and potential trends. External surges often occur less than 72 h apart, enabling a single storm surge to be influenced by more than one external surge.
Kenta Tozato, Shuji Moriguchi, Shinsuke Takase, Yu Otake, Michael R. Motley, Anawat Suppasri, and Kenjiro Terada
Nat. Hazards Earth Syst. Sci., 23, 1891–1909, https://doi.org/10.5194/nhess-23-1891-2023, https://doi.org/10.5194/nhess-23-1891-2023, 2023
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This study presents a framework that efficiently investigates the optimal placement of facilities probabilistically based on advanced numerical simulation. Surrogate models for the numerical simulation are constructed using a mode decomposition technique. Monte Carlo simulations using the surrogate models are performed to evaluate failure probabilities. Using the results of the Monte Carlo simulations and the genetic algorithm, optimal placements can be investigated probabilistically.
Cited articles
Apotsos, A., Raubenheimer, B., Elgar, S., Guza, R. T., and Smith, J. A.: Effect of wave rollers and bottom stress on wave setup, J. Geophys. Res.-Oceans 112, C02003, https://doi.org/10.1029/2006JC003549, 2007.
Apotsos, A., Raubenheimer, B., Elgar, S., and Guza, R. T.: Wave-driven setup and alongshore flows observed onshore of a submarine canyon, J. Geophys. Res.-Oceans, 113, C07025, https://doi.org/10.1029/2007JC004514, 2008.
Bertin, X., Fortunato, A. B., and Oliveira, A.: A modeling-based analysis of processes driving wave-dominated inlets, Cont. Shelf Res., 29, 819–834, 2009.
Broman, B., Hammarklint, T., Rannat, K., Soomere, T., and Valdmann, A.: Trends and extremes of wave fields in the north-eastern part of the Baltic Proper, Oceanologia, 48, 165–184, 2006.
Caliskan, H. and Valle-Levinson, A.: Wind-wave transformations in an elongated bay, Cont. Shelf Res., 28, 1702–1710, 2008.
Cariolet, J.-M. and Suanez, S.: Method of mapping flood hazard in low-lying coasts, Houille Blanche, 2, 52–58, 2009.
Charles, E., Idier, D., Thiebot, J., Le Cozannet, G., Pedreros, R., Ardhuin, F., and Planton, S.: Present wave climate in the Bay of Biscay: Spatiotemporal variability and trends from 1958 to 2001, J. Climate, 25, 2020–2039, 2012a.
Charles, E., Idier, D., Delecluse, P., Deque, M., and Le Cozannet, G.: Climate change impact on waves in the Bay of Biscay, France, Ocean Dynam., 62, 831–848, 2012b.
Cheng, X. T., Evans, E. P., Wu, H. Y., Thorne, C. R., Han, S., Simm, J. D., and Hall, J. W.: A framework for long-term scenario analysis in the Taihu Basin, China, J. Flood Risk Manage., 6, 3–13, 2013.
Coastal Engineering Manual: U. S. Army Corps of Engineers (USACE), Manual EM 1110-2-1100, 2002.
Dalrymple, R. A., Eubanks, R. A., and Birkemeier, W. A.: Wave-induced circulation in shallow basins, J. Waterw. Ports Coast. Ocean Div. ASCE, 103, 117–135, 1977.
Dawson, R. J., Speight, L., Hall, J. W., Djordjevic, S., Savic, D., and Leandro, J.: Attribution of flood risk in urban areas, J. Hydroinform., 10, 275–288, 2008.
Dean, R. G. and Bender, C. J.: Static wave set-up with emphasis on damping effects by vegetation and bottom friction, Coast. Eng., 53, 149–165, 2006.
Dean, R. G. and Dalrymple, R. A.: Water wave mechanics for engineers and scientists, World Scientific, 1991.
Dean, R. G. and Dalrymple, R. A.: Coastal Processes with Engineering Applications, Cambridge University Press, Cambridge, 2002.
Feddersen, F.: Effect of wave directional spread on the radiation stress: comparing theory and observations, Coast. Eng., 51, 473–481, 2004.
Filipot, J.-F. and Cheung, K. F.: Spectral wave modeling in fringing reef environments, Coast. Eng., 67, 67–79, 2012.
Guza, R. T. and Thornton, E. B.: Wave set-up on a natural beach, J. Geophys. Res.-Ocean Atmos., 86, 4133–4137, 1981.
Hall, J. W., Dawson, R. J., Barr, S. L., Batty, M., Bristow, A. L., Carney, S., Dagoumas, A., Ford, A. C., Harpham, C., Tight, M. R., Walsh, C. L., Watters, H., and Zanni, A. M.: City-scale integrated assessment of climate impacts, adaptation, and mitigation, in: Energy efficient cities: assessment tools and benchmarking practices, edited by: Bose, R. K., The World Bank, 63–83, 2010.
Harper, B., Hardy, T., Mason, L., and Fryar, R.: Developments in storm tide modelling and risk assessment in the Australian region, Nat. Hazards, 51, 225–238, 2009.
Heidarzadeh, M., Bonneton, P., Bonneton, N., and Tissier, M.: Field observations of wave-induced set-up on the french Aquitanian coast, in: Proceedings of the 28th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2009), Honolulu, 31 May–5 June 2009, ASME, vol. 4, 233–241, 2009.
Höglund, A., Meier, H. E. M., Broman, B., and Kriezi, E.: Validation and correction of regionalised ERA-40 wind fields over the Baltic Sea using the Rossby Centre Atmosphere Model RCA3.0, Rapport Oceanografi No. 97, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden, 2009.
Houston, J. R.: Simplified Dean's method for beach-fill design, J. Waterw. Port C-ASCE 122, 143–146, 1996.
Hsu, T.-W., Hsu, J. R.-C., Weng, W.-K., Wang, S.-K., and Ou, S.-H.: Wave setup and setdown generated by obliquely incident waves, Coast. Eng., 53, 865–877, 2006.
Irish, J. L. and Canizares, R.: Storm-wave flow through tidal inlets and its influence on bay flooding, J. Waterw. Port C–ASCE, 135, 52–60, 2009.
Jain, I., Rao, A. D., Jitendra, V., and Dube, S. K.: Computation of expected total water levels along the east coast of India, J. Coastal Res., 26, 681–687, 2010a.
Jain, I., Rao, A. D., and Ramesh, K. J.: Vulnerability assessment at village level due to tides, surges and wave set-up, Mar. Geod., 33, 245–260, 2010b.
Keevallik, S. and Soomere, T.: Towards quantifying variations in wind parameters across the Gulf of Finland, Estonian J. Earth Sci., 59, 288–297, 2010.
Komen, G. J., Cavaleri, L., Donelan, M., Hasselmann, K., Hasselmann, S., and Janssen, P. A. E. M.: Dynamics and modelling of ocean waves, Cambridge University Press, Cambridge, 1994.
Launiainen, J. and Laurila, T.: Marine wind characteristics in the northern Baltic Sea, Finnish Mar. Res., 250, 52–86, 1984.
Lentz, S. and Raubenheimer, B.: Field observations of wave setup, J. Geophys. Res.-Oceans, 104, 867–875, 1999.
Longuet-Higgins, M. S. and Stewart, R. W.: Radiation stresses in water waves: a physical discussion with applications, Deep-Sea Res., 11, 529–562, 1964.
Massel, S. R.: On the largest wave height in water of constant depth, Ocean Eng., 23, 553–573, 1966.
McInnes, K. L., O'Grady, J. G., and Hubbert, G. D.: Modelling sea level extremes from storm surges and wave set-up for climate change assessments in southeastern Australia, J. Coastal Res., Special Issue, 56, 1005–1009, 2009.
Mietus, M. (Ed.): The climate of the Baltic Sea Basin. Marine meteorology and related oceanographic activities, Rep. No. 41, World Meteorol. Org. Geneva, 64 pp., 1998.
Nayak, S., Bhaskaran, P., and Venkatesan, R.: Near-shore wave induced set-up along Kalpakkam coast during an extreme cyclone event in the Bay of Bengal, Ocean Eng., 55, 52–61, 2012.
Nelson, R. C.: Depth limited design wave heights in very flat regions, Coastal Eng., 23, 43–59, 1994.
O'Grady, J. G. and McInnes, K. L.: Wind waves and their relationship to storm surges in northeastern Bass Strait, Aust. Meteorol. Oceanogr. J., 60, 265–275, 2010.
Orlenko, L. R., Lopatukhin, L. I., and Portnova, G. L. (Eds.): Studies of hydrometeorological regime of Tallinn Bay, Gidrometeoizdat, Leningrad, 1984 (in Russian).
Pettersson, H., Kahma, K. K., and Tuomi, L.: Wave directions in a narrow bay, J. Phys. Oceanogr., 40, 155–169, 2010.
Power, H. E., Hughes, M. G., Aagaard, T., and Baldock, T. E.: Nearshore wave height variation in unsaturated surf, J. Geophys. Res.-Oceans, 115, C08030, https://doi.org/10.1029/2009JC005758, 2010.
Räämet, A., Suursaar, Ü., Kullas, T., and Soomere, T.: Reconsidering uncertainties of wave conditions in the coastal areas of the northern Baltic Sea, J. Coastal Res., Special Issue, 56, 257–261, 2009.
Räämet, A., Soomere, T., and Zaitseva-Pärnaste, I.: Variations in extreme wave heights and wave directions in the north-eastern Baltic Sea, Proc. Estonian Acad. Sci., 59, 182–192, 2010.
Raubenheimer, B., Guza, R. T., and Elgar, S.: Wave transformation across the inner surf zone, J. Geophys. Res.-Oceans, 101, 25589–25597, 1996.
Raubenheimer, B., Guza, R. T., and Elgar, S.: Field observations of set-down and set-up, J. Geophys. Res.-Oceans, 106, 4629–4638, 2001.
Raukas, A. and Hyvärinen, H. (Eds.): Geology of the Gulf of Finland, Valgus, Tallinn, 1992 (in Russian).
Sallenger, A. H. and Holman, R. A.: Wave energy saturation on a natural beach of variable slope, J. Geophys. Res.-Oceans, 90, 11939–11944, 1985.
Samuelsson, P., Jones, C. G., Willén, U., Ullerstig, A., Gollvik, S., Hansson, U., Jansson, C., Kjellström, E., Nikulin, G., and Wyser, K.: The Rossby Centre Regional Climate Model RCA3: Model description and performance, Tellus A, 63, 4–23, 2011.
Schmager, G., Fröhle, P., Schrader, D., Weisse, R., and Müller-Navarra, S.: Sea state, tides, in: State and evolution of the Baltic Sea 1952–2005, edited by: Feistel, R., Nausch, G., and Wasmund, N., Wiley, Hoboken, New Jersey, 143–198, 2008.
Seifert, T., Tauber, F., and Kayser, B.: A high resolution spherical grid topography of the Baltic Sea, 2nd Edn., Baltic Sea Science Congress, Stockholm 25–29 November 2001, Poster #147, available at: www.io-warnemuende.de/iowtopo, 2001,
Shi, F. and Kirby, J. T.: Discussion of "Wave set-up and setdown generated by obliquely incident waves" by T.-W. Hsu et al., Coastal Engineering, 53, 865–877, 2006, Coast. Eng., 55, 1247–1249, 2008.
Sooäär, J. and Jaagus, J.: Long-term variability and changes in the sea ice regime in the Baltic Sea near the Estonian coast, Proc. Estonian Acad. Sci. Eng., 13, 189–200, 2007.
Soomere, T.: Wind wave statistics in Tallinn Bay, Boreal Environ. Res., 10, 103–118, 2005.
Soomere, T.: Wave regimes and anomalies off north-western Saaremaa Island, Proc. Estonian Acad. Sci. Eng., 7, 157–173, 2001.
Soomere, T. and Räämet, A.: Spatial patterns of the wave climate in the Baltic Proper and the Gulf of Finland, Oceanologia, 53, 335–371, 2011.
Soomere, T., Kask, A., Kask, J., and Nerman, R.: Transport and distribution of bottom sediments at Pirita Beach, Estonian J. Earth Sci. 56, 233–254, 2007.
Soomere, T., Behrens, A., Tuomi, L., and Nielsen, J. W.: Wave conditions in the Baltic Proper and in the Gulf of Finland during windstorm Gudrun, Nat. Hazards Earth Syst. Sci., 8, 37–46, https://doi.org/10.5194/nhess-8-37-2008, 2008a.
Soomere, T., Myrberg, K., Leppäranta, M., and Nekrasov, A.: The progress in knowledge of physical oceanography of the Gulf of Finland: a review for 1997–2007, Oceanologia, 50, 287–362, 2008b.
Starr, V. P.: A momentum integral for surface waves in deep water, J. Mar. Res., 6, 126–135, 1947.
Stockdon, H. F., Holman, R. A., Howd, P. A., and Sallenger, A. H.: Empirical parameterization of set-up, swash, and runup, Coast. Eng., 53, 573–588, 2006.
Suursaar, Ü., Kullas, K., Otsmann, M., Saaremäe, I., Kuik, J., and Merilain, M.: Hurricane Gudrun and modelling its hydrodynamic consequences in the Estonian coastal waters, Boreal Environ. Res., 11, 143–159, 2006.
Torresan, S., Critto, A., Rizzi, J., and Marcomini, A.: Assessment of coastal vulnerability to climate change hazards at the regional scale: the case study of the North Adriatic Sea, Nat. Hazards Earth Syst. Sci., 12, 2347–2368, https://doi.org/10.5194/nhess-12-2347-2012, 2012.
Torres-Freyermuth, A., Mar\'ino-Tapia, I., Coronado, C., Salles, P., Medell\'in, G., Pedrozo-Acuña, A., Silva, R., Candela, J., and Iglesias-Prieto, R.: Wave-induced extreme water levels in the Puerto Morelos fringing reef lagoon, Nat. Hazards Earth Syst. Sci., 12, 3765–3773, https://doi.org/10.5194/nhess-12-3765-2012, 2012.
Trenhaile, A. S.: Modeling the erosion of cohesive clay coasts, Coast. Eng., 56, 59–72, 2009.
Tuomi, L., Kahma, K. K., and Pettersson, H.: Wave hindcast statistics in the seasonally ice-covered Baltic Sea, Boreal Environ. Res., 16, 451–472, 2011.
Tuomi, L., Kahma, K. K., and Fortelius, C.: Modelling fetch-limited wave growth from an irregular shoreline, J. Marine Syst., 105, 96–105, 2012.
Valdmann, A., Käärd, A., Kelpšait\.e, L., Kurennoy, D., and Soomere, T.: Marine coastal hazards for the eastern coasts of the Baltic Sea, Baltica, 21, 3–12, 2008.
Vetter, O., Becker, J.-M., Merrifield, M. A., Pequignet, A.-C., Aucan, J., Boc, S. J., and Pollock, C. E.: Wave set-up over a Pacific Island fringing reef, J. Geophys. Res.-Oceans, 115, C12066, https://doi.org/10.1029/2010JC006455, 2010.
Yemm, S. P.: Field observation of set-up, M.S. Thesis, Naval Postgraduate School, USA, 45 pp., 2004.
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