A tsunami is a series of ocean waves with extremely long wavelengths and high energy, often caused by a large-scale disturbance of the ocean floor. This disturbance is typically associated with underwater earthquakes, volcanic eruptions, or landslides. Tsunamis can travel across entire ocean basins,...
C Tsunamis are one of the most terifying natural phenomen a that the world suffers. The series of waves generated by the displacement (位移)of a large volume of water can be caused by several events, ǐncluding carthquakes, underwater explosions and landslides. Once triggered (引发), a t...
Definition Although often associated with earthquakes , tsunami can also be generated by any types of physical disturbances of seawater by landslides, rock fall, submarine volcanic eruptions and associated pyroclastic flows, and meteorite impact but waves that are generated by climatic effects, such as ...
Model for the Leading Waves of Tsunamis We propose a model for the leading wave of tsunamis to explain why although the coastal manifestation of a tsunami is assumed solitary-wave-like it is most... S Tadepalli,CE Synolakis - 《Physical Review Letters》 被引量: 255发表: 1996年 Long-Term...
A wave becomes a 'shallow-water wave' when the ratio between the water depth and its wavelength gets very small, and since a tsunami has an extremely large wavelength (hundreds of kilometres), tsunamis act as a shallow-water wave even in deep oceanic water. Shallow-water waves move at a ...
Tsunamis海啸英语介绍ppt Tsunamis Speaker：Groupmembers:Whatisatsunami?Atsunamiisaseriesofextremelylongwavescausedbyalargeandsudden displacementoftheocean,usuallytheresultofanearthquakebeloworneartheoceanfloor.Thisforcecreateswavesthatradiateoutwardinalldirectionsawayfromtheirsource,sometimescrossingentireoceanbasins....
Thus, no large waves are generated on the water surface. When the water depth is very large, the waves generated by an eruption are negligible, because most energy is lost during plume motion. Therefore, for a given source energy, there is a critical water depth between zero and a very ...
Image:Mega-Tsunami: fiction picture gives an idea of wave height Waves of this type are calledMega Tsunami. They are so great that they can reach several hundred meters in height, travel at the speed of a jet aircraft and get up to 12 miles (20 Kilometers) inland. ...
While good-weather meteotsunamis are individual hazardous events, “bad-weather” meteotsunamis often coincide with other dangerous types of long-wave oscillations, in particular, with storm surges (cf. Thomson et al. 2007; Roeber and Bricker 2015). The superposition of waves from these two natura...
These extremely long waves, with distancesfrom crest to trough of more than 100 km, are usuallynot more than 1 m high in the deep oceans but theywreak havoc on certain coastal regions as they increasetheir amplitude considerably on approaching the coast.The importance of tsunami research and ...