Tsunami
the term
of “tsunami” comes from the Japanese which means harbor (“tsu”) and wave
(“nami”). A tsunami is a series of waves generated when water in a lake or the
sea is rapidly displaced on a massive scale.
A tsunami can
be generated when the sea floor abruptly deforms and vertically displaces the
overlying water. Such large vertical movements of the earth’s crust can occur
at plate boundaries. subduction of earthquakes are particularly effective in
generating tsunamis, and occur where denser oceanic plates slip under
continental plates. as the displaced water mass moves under the influence of
gravity to regain its equilibrium, it radiates across the ocean like ripples on
a pond.
tsunami
always bring great damage. most of the damage is caused by the huge mass of
water behind the initial wave front, as the height of the sea keeps rising fast
and floods powerfully into the coastal area.
