| Titre | Tsunamigenic sources in the Bay of Plenty, New Zealand |
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| Auteur | Walters, R A; Goff, J; Wang, K |
| Source | Science of Tsunami Hazards vol. 24, no. 5, 2006 p. 339-357 |
| Liens | Online - En ligne
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| Image |  |
| Année | 2006 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20060608 |
| Document | publication en série |
| Lang. | anglais |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Lat/Long OENS | 175.2000 178.1833 -36.0667 -38.2000 |
| Sujets | tsunami; glissements de terrain; failles; formation de failles; zones de subduction; plate-forme continentale; talus continental; arcs magmatiques; monts sous-marins; marges plaques; tectonique; géologie
marine |
| Illustrations | cartes de localisation; cartes géologiques généralisées; profils bathymétriques; graphique à barres |
| Programme | Réduction des risques dus aux aléas naturels |
| Diffusé | 2006 01 01 |
| Résumé | (disponible en anglais seulement)
New Zealand sits in a precarious position astride the boundary between the Pacific and Australian Plates. There is a wide range of potential tsunamigenic
sources in this area including fault movements, submarine landslides, volcanic activity, and other mechanisms. In addition, considerable prehistoric information indicates that large tsunamis have inundated the coastline several times in the past. A
part of our work has been directed toward using historic and prehistoric tsunami data to evaluate possible sources. Several types of dislocation models and submarine landslide models are used to simulate the displacement of the sources. A finite
element numerical model is used to simulate generation, propagation and runup of the resultant tsunami. As an example, we present results for the Bay of Plenty, northeast coast of the North Island, New Zealand. The range of source types includes
local faults, subduction zone rupture, volcanic eruptions, sector collapse of seamounts, and submarine landslides. A likely major source is a subduction zone event along the Tonga-Kermadec Trench. Data from paleotsunami deposits have guided the model
in determining appropriate source characteristics and establishing the most significant event for this region |
| GEOSCAN ID | 223424 |
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