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Why does low tide occur after an earthquake and before the tsunami?
Wiki User
∙ 9y ago
The same reason that the sea draws out a little bit before a normal wave - the higher water near the beach is drawn into the incoming wave as it "rolls" into the sand as it nears the shore. This water makes the wave rise above the undisturbed water.
A tsunami/tidal wave is just so much bigger so it removes more water from the shore.
Wiki User
∙ 16y ago
Wiki User
∙ 9y agoA tsunami is a kind of wave, and to such a wave there is a crest of high water and a trough of low water. In many cases, the trough arrives first, resulting in the water receding. Another way of looking at it: in order for water to build up into a tsunami, it must be move from somewhere else.
Wiki User
∙ 14y agoThe tide does not shift. Infact it is the energy caused by the plate movement of an earthquake, that causes a series of large waves known as a Tsunami, these waves pull water from the direction in which is is heading dispersing that water to the rear. The pulling, or sucking of the water in front of the wave, reduces the volume in front of the wave, therefore lowering its level. As I am sure most have learnt since the most recent Tsunami, if at the waters edge, and you notice the water level reducing faster than normal, such as a normal tidal flow, head for the hills!!!
Wiki User
∙ 13y agoA tsunami is a series of very long water waves that carry immense energy. In open ocean the length of a wave can be several hundred meters long, thus giving very small crests and troughs, but when closing in on an island beach, the wavelength is reduced because of the difference in depth near shores. This behavior yields impressive crests and troughs, and when hitting the shore a trough always happens first (because water is already there), which "sucks out" all the water. A crest (huge wave) follows which is the destructive part of the tsunami and releases its energy crest after crest.
Wiki User
∙ 9y agoIt isn't low tide, but part of the wave. Each wave in a tsunami has two parts: a crest of high water and a trough of low water. In many cases the trough comes first, resulting in the water receding.
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What occurs twice each day in an ocean?
High tide and low tide both usually occur twice in 24 hours.
How are bore tide and tsunami different?
Tides are caused by the gravitational attraction of the moon (and other astronomical bodies to a lesser extent), and tsunamis are caused by earthquakes. Tides are very predictable, tsunamis are very unpredictable.
What are the big waves and abnormally high ocean tides that occur during a typhoon called?
The high water level, which is not a tide, is called the storm surge.
What does the tide out mean?
Low tide
What is a storm tide?
A storm tide is a storm surge caught in high tide, which causes stronger damage.
Why does low tide occur after the earthquake and before the tsunami?
It isn't low tide, but part of the wave. Each wave in a tsunami has two parts: a crest of high water and a trough of low water. In many cases the trough comes first, resulting in the water receding.
What happens to sea waves when an earthquake is generated?
Sometimes a tsunami can occur after an earthquake has taken place. You can know when a tsunami will occur by the way the water reacts at a beach near the ocean. The water will start to pull away from the beach faster than a tide will. When this happens, the tsunami is about to strike.
Before a tsunami the ocean appears that it is at low tide?
True... The Tsunami 'draws in' water - which makes the local ocean appear to vanish... before the wave hits the shoreline
Can you give a list of natural disasters?
flood,earthquake,drought,famine,tornadoes,hurricane,volcanic eruptions,cyclone,landslide,tsunami,tide,e.t.c
What was the cause of a tsunami?
A strong incoming tide at the mouth of some rivers produces a bore (a wave) that moves up the river against the current.
Does a tornado create a storm surge?
No. A storm surge is a mass of water driven onto land by a hurricane or other major wind event. A tsunami is a large wave or series of waves triggered by an earthquake or landslide. A tsunami is faster and more violent than a storm surge.
What is the difference between storm surge tidal wave and tsunami?
A tsunami and a tidal wave are exactly the same. They were both terms coined long before the cause was understood. In the west, they believed that the tide caused the wave. Therefore they called it a tidal wave. Tsunami means harbor wave in Japanese because it often occurs in a harbor. After it was realized that such a wave was caused by seismic activity rather than the tide, a new term was sought. So, English adopted the word Tsunami from Japanese and a new word found it's way into the English dictionary. Tsunami is now the correct scientific term for a wave (or series of waves) caused by an earthquake, and coming onto land in an area relatively distant from the earthquake. The wave action in the ocean is often hidden below the surface when in deep water and the full effect of the Tsunami may not be realized until it strikes land.
When water at the oceans edge pulls back it is?
Low or Ebb Tide. The ocean also behaves like this just before a tsunami.
How do low tide and high tide occur?
The moon.
How do ocean tide occur?
how long it take tide
What kind of tide will occur when the moon is at positions a c d or f?
A spring tide will occur.
What kind of tide will occur when the moon is at positions A C D and F?
A spring tide will occur
