Tsunami. The world's most terrifying natural disaster
Asie ; Catastrophe ; Evaluation des dégâts ; Inde ; Indonésie ; Reconstruction ; Risque naturel ; Sri Lanka ; Thaïlande ; Tsunami
Asia ; Catastrophe ; Damage valuation ; India ; Indonesia ; Natural hazards ; Sri Lanka ; Thailand ; Tsunami
The A. explains what is a Tsunami and gives details of the main Tsunamis through history. The impact of the latest Tsunami on Southeast Asian countries is illustrated with photograph showing the extent of the destructions, and the rebuilding
operations. The prospects of future Tsunami are analysed. - (GL)
Submarine slides on volcanic islands - a source for mega-tsunamis in the Quaternary
Fond sous-marin ; Géomorphologie littorale ; Ile ; Ile volcanique ; Mouvement de masse ; Quaternaire ; Risque naturel ; Tsunami ; Volcanisme
Coastal geomorphology ; Island ; Mass movement ; Natural hazards ; Quaternary ; Sea floor ; Tsunami ; Volcanism
This paper overviews the distribution, magnitude, recurrence interval, and age of large submarine slides on volcanic islands and their potential for the generation of mega-tsunamis during the Quaternary. This paper also discusses the geomorphic
Atlantic Ocean ; Geology ; Island ; Natural hazards ; Rock ; Tectonics ; Tsunami ; Volcanism
Dans les espaces méditerranéen et caribéen, caractérisés par une tectonique de marge passive, les tsunamis peuvent se produire. Les AA. étudient les conditions géologiques favorables à ces phénomènes et les dépôts de blocs et de roches qu'ils
; Rainstorm ; Tsunami ; Twentieth Century ; United Kingdom ; Weather type
Meteorological tsunamis, or meteo-tsunamis, are long-period waves that possess tsunami charcteristics but are meteorological in origin, although they are not storm surges. The AA. investigate the coast of southern Britain (the English Channel
, the Bristol Channel, and the Severn Estuary) for the occurrence of tsunami-like waves that, in the absence of associated seismic activity, they recognize as meteo-tsunamis. This coastal hazard has resulted in damage and loss of life and should be considered
The tremendous earthquake (8.8 on the Richter scale) of 22st Frebruary 2010 that affect the central part of Chile. The earthquake even generated a tsunami that caused other huge damages. - (NF)
The growing urbanization of the coastal area rises the risk linked to low frequency-high magnitude events, like tsunamis, which are rarely taken into account by planners. Present-day research focuses mainly on the tsunami hazard assessment, linked
to the frequency and intensity of these catastrophic events. However, tsunamis can have very different effects in response to different morphological types of coasts. This analysis allows the vulnerability of different type of coasts occurring in Apulia region
37 communications sur l'impact des tsunamis, leurs origines et les prévisions, les études historiques et statistiques, leur genèse et leur propagation, les effets de la topographie, les systèmes de protection et les problèmes liés au déferlement.
International Union of Geodesy and Geophysics (IUGG). Tsunami Commission, International
Le point sur les recherches en géosciences concernant les tsunamis. Dans cet article, les AA. décrivent comment notre compréhension de ce phénomène a changé avec le temps : processsus littoraux, processus marins, mécanismes, glissements de terrain
The tsunami hazard in Tohoku and the Hawaiian islands
Catastrophe ; Géographie de l'Asie ; Hawaii ; Japon ; Littoral ; Lutte contre les tsunami ; Recherche ; Séisme ; Tsunami
Comparaison des expériences japonaise et américaine (Hawaii), en matière de tsunami: méthodes de lutte et recherche pour parer à leurs effets catastrophiques. Complémentarité et perspectives offertes par l'adoption mutuelle des solutions établies
To date, most studies have considered the sedimentology of palaeo-tsunamis while almost no detailed studies have been undertaken in areas known to have been affected by tsunamis in recent times. Research on contemporary tsunamis show that coastal
landscapes may be greatly altered not only by direct tsunami run-up orthogonal to the shoreline, but also by episodes of vigourous backwash and by water flow sub-parallel to the coastline. Deposition of large boulders is also associated with severe tsunamis
Asia ; Catastrophe ; Classification ; Earthquake ; Indonesia ; Inundation ; Natural hazards ; Philippines ; South-Eastern Asia ; Taiwan ; Tsunami
Tsunami magnitudes on the Imamura-Lida scale are investigated by the author's method (Hatori 1979, 1986) using the data of inundation heights near the source area and tide-gauge records observed in Japan. The regional characteristic of tsunami
The dynamic geotectonic setting of the Caribbean basin with the Antillean island arc is predestined to create strong tsunamis with rather short recurrence intervals. This is not only revealed by historical documents over the last 500 years. Field
observations identified strong Holocene tsunami in the southern Caribbean, and on Bonaire in particular. The tsunami were date to the last 4500 years. The evidence is mostly coarse debris in the form of ridges, ramparts of clusters of large boulders up to 200
the necessity of establishing a tsunami warning programme. - (L'A.).
Bahamas ; C 14 dating ; Coastal sedimentation ; Dating ; Erratic boulder ; Holocene ; Island ; Relative dating ; Tsunami
Les AA. présentent les résultats de la cartographie des sédiments holocènes liés à des tsunami sur Long Island et Eleuthera. Ils comparent leurs premières datations absolues avec celles des traces de tsunami sur d'autres îles des Antilles. Pour
Eleuthera et Long Island, ils mettent en évidence 2 forts tsunami venant de l'est, c'est à dire du large de l'océan Atlantique, au début de l'Holocène, il y a environ 3000 et 500 ans. Ces âges absolus correspondent bien aux indices d'âge relatifs fournis par
l'état d'érosion et la formation végétale des sédiments de tsunami.
Petit volume d'assez grande diffusion sur les effets et les causes des tremblements de terre et des tsunamis, les possibilités de prévision de ces cataclysmes et de prévention des désastres. Le cas de Sakhaline est étudié plus en détail. (FC).
Most published interpretations of the stratigraphic data that form the basis for most of the world's Holocene sea-level curves do not consider palaeotsunamis as agents of coastal sedimentation. Biostratigraphic investigations of modern tsunami