![]() ![]() Tidal waves are caused due to both the sun and the moon, but due to the close distance between the earth and moon, the effect moon has on tidal waves is much greater than the sun. Tsunamis generally go unnoticed at sea but prominent in shallow waters or land. Tsunamis generally have low amplitude but a high wavelength, which can be a few hundred kilometres long. In early geographic texts, tsunami was also referred to as seismic sea waves. In Japanese, tsunami translates to "harbor wave" as this phenomenon is seen more commonly seen in the coastal areas. Tsunamis were erroneously referred to as tidal waves in the past, but they are not related to tide formation and can occur in any tidal state. The costal areas experience two high and two low tides daily. The height of the tidal wave is determined by the gravitational force exerted by the moon hence it is highest during new and full phases of the moon and lowest during the quarter phases of the moon. This is the reason why the arrival of the tide differs each day. Tidal waves are ocean waves that occur periodically and depend on the relative position of the Earth and the Moon. Tsunamis occur only when there is seismic disturbance in large water bodies. Tidal waves occur daily at a coastal area. Tidal waves are phenomena seen most at coastal areas.Ī majority of tsunamis (80%) occur in the Pacific Ocean but can occur in any large body of water if the underlying causes are present. ![]() When tsunamis approach shallow water near land masses, the speed decreases, and the amplitude increases very rapidly. Tsunamis can have wavelengths of up to 200 kilometres and can travel over 800 kilometres per hour. The intensity of a changing tide is noticeable only in certain parts where it’s high enough (As high as 55 feet in the Bay of Fundy, Canada). Tsunamis are generated by earthquakes, erupting submarine volcanoes or due to any gas bubble erupting in the sea or ocean. Tidal waves are caused due to the gravitational force exerted by the sun and the moon. They generally have low amplitude but a high (a few hundred km long) wavelength. Tsunami is a series of water waves caused by the displacement of large bodies of water. Tidal waves are waves created by the gravitational forces of the sun or moon, and cause changes in the level of water bodies. Comparison chart Tidal Wave versus Tsunami comparison chart ![]()
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