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tsunamisafe.com.au
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Definitions (22)
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travel time
Time that it takes the tsunami to travel from its source to a particular location that it floods.
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Tsunami
A series of travelling waves generated by the sudden displacement of the sea by submarine earthquakes, volcanic eruptions, landslides or asteroid impacts. The word ‘tsunami’ is Japanese for ‘harbour wave’.
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Tsunami
A series of travelling waves generated by the sudden displacement of the sea by submarine earthquakes, volcanic eruptions, landslides or asteroid impacts. The word ‘tsunami’ is Japanese for ‘harbour wave’.
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Tsunami warning
A Tsunami Warning may be issued once there is high degree of confidence that a tsunami threat exists based upon detection that a tsunami has been generated; or if there is a potential threat (unconfirmed) to NSW within the next 90 minutes. This warning will outline the areas under threat using coastal waters forecast districts and the actions that [..]
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wave height
Height of a tsunami wave is most important at shore and refers to the depth of water under the wave crest
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Wave period
The length of time between two successive tsunami wave peaks or troughs. May vary due to complex interference of waves. Is usually measured in minutes.
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Tidal wave
A common term for tsunami used in older literature, historical descriptions and popular accounts. Tides, caused by the gravitational attractions of the sun and moon, may increase or decrease the impact of a tsunami, but have nothing to do with their generation or propagation. However, most tsunami (initially) give the appearance of a fast rising or [..]
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Regional Tsunami
Tsunami generated within the South West Pacific Region.
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run-up
The maximum vertical height, above mean sea level, that the sea attains during a tsunami (measured in metres).
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Local Tsunami
A tsunami that is generated close to the areas it floods, for example a tsunami generated by a continental shelf collapse off the NSW coast. This type of tsunami may also be referred to as ‘near-field’ tsunami.
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