How tidal properties influence the future duration of coastal flooding
Abstract This paper uses a combined theoretical/empirical approach to show that 4 primary factors impact inundation times during high-tide flooding: the amplitude, period, and relative phases of semidiurnal and diurnal tide forcing, and the maximum water-level above a datum. Some regions—such as the...
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Nature Portfolio
2025-04-01
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| Series: | npj Natural Hazards |
| Online Access: | https://doi.org/10.1038/s44304-025-00086-3 |
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| author | Stefan A. Talke |
| author_facet | Stefan A. Talke |
| author_sort | Stefan A. Talke |
| collection | DOAJ |
| description | Abstract This paper uses a combined theoretical/empirical approach to show that 4 primary factors impact inundation times during high-tide flooding: the amplitude, period, and relative phases of semidiurnal and diurnal tide forcing, and the maximum water-level above a datum. Some regions—such as the US Gulf Coast—have tidal properties that lead to long high-water stands ( > 20 hours). For the same inundation depth of 0.2 m, regions with large semidiurnal tides are inundated for only 1-2 hours. Within individual estuaries, the potential duration can vary by a factor of more than two. Combined with relative sea-level rise rates that vary from less than 0 mm/yr to 10 mm/yr around North America, the observed timescale to transition from a zero to two-hour tidal flood length varies from 1-87 years. This large spatial variability in tidal inundation properties has implications for hazard planning, ecological adaptation and the future evolution of coastal flood events. |
| format | Article |
| id | doaj-art-0d8b50fd08ce4c5b9b95be238757fdce |
| institution | Kabale University |
| issn | 2948-2100 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Natural Hazards |
| spelling | doaj-art-0d8b50fd08ce4c5b9b95be238757fdce2025-08-20T03:52:24ZengNature Portfolionpj Natural Hazards2948-21002025-04-012111110.1038/s44304-025-00086-3How tidal properties influence the future duration of coastal floodingStefan A. Talke0Department of Civil and Environmental Engineering, California Polytechnic State UniversityAbstract This paper uses a combined theoretical/empirical approach to show that 4 primary factors impact inundation times during high-tide flooding: the amplitude, period, and relative phases of semidiurnal and diurnal tide forcing, and the maximum water-level above a datum. Some regions—such as the US Gulf Coast—have tidal properties that lead to long high-water stands ( > 20 hours). For the same inundation depth of 0.2 m, regions with large semidiurnal tides are inundated for only 1-2 hours. Within individual estuaries, the potential duration can vary by a factor of more than two. Combined with relative sea-level rise rates that vary from less than 0 mm/yr to 10 mm/yr around North America, the observed timescale to transition from a zero to two-hour tidal flood length varies from 1-87 years. This large spatial variability in tidal inundation properties has implications for hazard planning, ecological adaptation and the future evolution of coastal flood events.https://doi.org/10.1038/s44304-025-00086-3 |
| spellingShingle | Stefan A. Talke How tidal properties influence the future duration of coastal flooding npj Natural Hazards |
| title | How tidal properties influence the future duration of coastal flooding |
| title_full | How tidal properties influence the future duration of coastal flooding |
| title_fullStr | How tidal properties influence the future duration of coastal flooding |
| title_full_unstemmed | How tidal properties influence the future duration of coastal flooding |
| title_short | How tidal properties influence the future duration of coastal flooding |
| title_sort | how tidal properties influence the future duration of coastal flooding |
| url | https://doi.org/10.1038/s44304-025-00086-3 |
| work_keys_str_mv | AT stefanatalke howtidalpropertiesinfluencethefuturedurationofcoastalflooding |