tsunami.org

Website:https://tsunami.org/
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Definitions (29)

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paleotsunami


Tsunami occurring prior to the historical record or for which there are no written observations. Paleotsunami research is based primarily on the identification, mapping, and dating of tsunami deposits found in coastal areas, and their correlation with similar sediments found elsewhere locally, regionally, or across ocean basins.
Source: tsunami.org

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bore phenomena


A steep, turbulent, rapidly moving wave front that typically occurs in river mouths or estuaries; bottom friction slows the advancing wave front, and water piles up behind to produce a nearly vertical bore face.
Source: tsunami.org

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deep-ocean assessment and reporting of tsunamis


An instrument for the early detection, measurement, and real-time reporting of tsunamis in the open ocean. Developed by the US NOAA Pacific Marine Environmental laboratory, the DART system consists of a seafloor bottom pressure recording system capable of detecting tsunamis, and a moored surface buoy for real-time communications. An acoustic link t [..]
Source: tsunami.org

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epicenter


The point on the earth's surface directly above the location in the earth (focus) where an earthquake originates.
Source: tsunami.org

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evacuation map


A drawing or representation that outlines danger zones and designates limits beyond which people must be evacuated to avoid harm from tsunami waves.
Source: tsunami.org

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Inundation


The maximum horizontal distance inland that a tsunami penetrates.
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locally generated tsunami


A tsunami that originates close to home, ie., from a nearby source for which its destructive effects occur to coasts within about 100 km (or, alternatively, less than 1 hour tsunami travel time).
Source: tsunami.org

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Mean sea level


The average height of the sea-surface.
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plate tectonics


The theory that the earth's surface is divided into a number of rigid plates that are either converging, diverging, or slipping past one another; these motions generate volcanism and earthquakes along the plate boundaries.
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post-tsunami survey


Tsunamis are relatively rare events and most their evidence is perishable. Therefore, it is very important that reconnaissance surveys be organized and carried out quickly and thoroughly after each tsunami occurs, to collect detailed data valuable for hazard assessment, model validation, and other aspects of tsunami mitigation. This data includes m [..]
Source: tsunami.org


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