c, Characteristics, Distribution:
river gods often appear where, and frequency is how often?
A tsunami is a natural hazard can occur in any ocean in the world, and on the large water areas. Experts said that 80% of tsunamis occur in the Pacific, 10% in the Indian Ocean, and 5-10% in the Mediterranean. Most tsunamis occur in the Pacific Ocean, caused by the vast Pacific accounted for 1/3 of the Earth's surface and is surrounded by mountains, deep sea areas and islands are shaped bow called "arc of fire", concentrated large earthquake activities (such as the waters off Kamchatka, Japan, the Kuril Islands, Alaska and South America). According to calculations on average 6 times / century, one of the tsunami in the surrounding waters spread out across the Pacific, is recognized in the very distant shore and make the whole ocean disturbance for days .
Characteristics of the tsunami when entering the mainland:
When entering the mainland, the extent of the tsunami devastation, depending on regional factors. Two crucial factors are the seabed topography and shape of the coastline. In the gently sloping beach, its energy will create huge waves, vertical, may be higher than 10 m, maybe even up to 30 m. If there are reefs offshore energy lessen the impact of the tsunami of the tsunami in the coastal areas will be significantly mitigated. Therefore, the protection of the marine environment, especially the protection of coral have special importance.
-The shape kind of tsunami like?
These giant waves, the vertical is what we could see the wave overtopping to the shore, making it lands to be flooded immediately. However, before that they only appear as the tide but not forming wavefronts. Sometimes the appearance of the first casino on the land like the tidal wave formed before the large estuaries.
A rarer phenomenon is the formation of "waves break", also known as "pseudo-tide". Illustration tidal waters formed in fully enclosed or partially enclosed, like Hilo Bay, they formed the waves break plash, continuous Dilemma. When "Dynasty author" is formed, the next wave will appear along with fake timetable leading to the receding of the sea and the waves surge. Illustration tide can still continue in the following days.
d, Consequences:
The tsunami caused devastating impact yet?
river god has 3 main effects: causing flooding, wave action to buildings and causing erosion. With strong force, the tsunami was the leading factor causing erosion of construction work, causing broken bridges and marine works. The tsunami washed away the houses and overturned cars in the street. The floating debris of the ship, automobiles are also a hazard as they may impact on the work, breaking the electrical system and may cause an explosion. The fire from the ship or from the oil storage tanks in the refinery near the coast will become a much larger disaster than the tsunami.
e, What should and should not do when a tsunami warning is given ?
-When are at the beach, if you felt the earthquake and saw the rapid retreat of sea water, think of how a tsunami is approaching. Let's run to higher ground immediately! When a tsunami warning is issued, do not try to use the phone or watched the waves are coming. Remember, tsunamis move very quickly across the oceans, so please immediately evacuated when the warning is given!
zone is defined evacuation How
Data storage analysis and calculations to predict the maximum height of the waves along the coast. Wave height is then modeled, linked with data on topography, coastlines for mapping flood plain area for each region. Frontier region from flooding to the nearest landmark locations (eg, roads) used to determine the need to evacuate. Upon alarm, people should get to a safe place until the official announcement about the end of the tsunami came.
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