Not long after the violent shaking, the huge waves roar
down over the shoreline and across fields, striking strongly
the cities and villages on the riverside and people lost
in the waves in a short time.
All the facilities in the port and collopsed buildings are swept
away under the choppy waves. After the event, the beach is littered
with broken boards and wood and carcasses.
The seisimic sea wave brings great harm to human beings. At present,
people can only prevent or reduce the loss caused by the disasters,
such as earthquake, volcano, tsunami and other sudden disaster
changes by predicting and observing.
China lies on the west coast of Pacific, with a coastline of 18000 km.
However, due to the obstructions of the Ryukyu Islands and southeast
Asian countries along the coast and the broad continental shelf,
the energy decays faster and has less influence on the mainland’s
coastal areas when ocean tsunamis come into the waters.
Because the speed of seismic waves along the crust exceeds the seismic
sea waves so tsunami can be predicted in advance. But tsunamis are more
difficult than seismic surveys because the topography of underwater
is so complex that it is difficult to measure.
In 1964, the global tsunami warning system coordination team was formed.
The tsunami warning system was more developed in Pacific where tsunamis