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Overtopping of Coastal Structures by Tsunami Waves
Following the 2011 Tohoku Earthquake and Tsunami, Japanese tsunami protection guidelines stipulate that coastal defences should ensure that settlements are shielded from the coastal inundation that would result from Level 1 tsunami events (with return periods in the order of about 100 years). Howeve...
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| Published in: | Geosciences (Basel) 2017-12, Vol.7 (4), p.121 |
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| Main Authors: | , , , , , , , , , , |
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| cites | cdi_FETCH-LOGICAL-c495t-79d4c0416a930a87651f3433dc608a304d321625f750e78521cb0151c3e1f3143 |
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| container_issue | 4 |
| container_start_page | 121 |
| container_title | Geosciences (Basel) |
| container_volume | 7 |
| creator | Esteban, Miguel Glasbergen, Toni Takabatake, Tomoyuki Hofland, Bas Nishizaki, Shinsaku Nishida, Yuta Stolle, Jacob Nistor, Ioan Bricker, Jeremy Takagi, Hiroshi Shibayama, Tomoya |
| description | Following the 2011 Tohoku Earthquake and Tsunami, Japanese tsunami protection guidelines stipulate that coastal defences should ensure that settlements are shielded from the coastal inundation that would result from Level 1 tsunami events (with return periods in the order of about 100 years). However, the overtopping mechanism and leeward inundation heights of tsunami bores as they hit coastal structures has received little attention in the past. To ascertain this phenomenon, the authors conducted physical experiments using a dam-break mechanism, which could generate bores that overtopped different types of structures. The results indicate that it is necessary to move away from only considering the tsunami inundation height at the beach, and also consider the bore velocity as it approaches the onshore area. The authors also prepared a simple, conservative method of estimating the inundation height after a structure of a given height, provided that the incident bore velocity and height are known. |
| doi_str_mv | 10.3390/geosciences7040121 |
| format | article |
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| identifier | ISSN: 2076-3263 |
| ispartof | Geosciences (Basel), 2017-12, Vol.7 (4), p.121 |
| issn | 2076-3263 2076-3263 |
| language | eng |
| recordid | cdi_doaj_primary_oai_doaj_org_article_ae9ba971c55442b6b178a2c7624324a6 |
| source | Publicly Available Content (ProQuest) |
| subjects | coastal dyke Coastal structures dam break Dam failure Earth science Earthquakes evacuation Flooding Height Overtopping Seismic activity Tidal bores tsunami Tsunamis Velocity |
| title | Overtopping of Coastal Structures by Tsunami Waves |
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