Before the final occurred tragedy of December of 2004, the
word tsunami was practically unknown of the Brazilians and
good part of the other peoples of occident.
The junction of the words "tsu" that it means "port" and
"nami" that means "wave, sea" results in the expression
created for the Japanese that is accustomed to suffer with
land tremors, tidal waves, hurricanes etc.
How much to its sprouting, the theory says that the continents
are on twelve gigantic plates that in turn are floating on
melted rocks (magma). In the measure where a plate if moves
away from the other, it comes close itself to one third. When
she has the shock between plates occur the land tremors. When
this occurs in the deep one of the oceans, the result is the
In August of 1883, one tsunami with approximately 35 meters of
height reached the Pacific Ocean after the entrance in
eruption and posterior landslide of Krakatoa volcano. To have
an idea, this is the height of a building of 10 floors.
In case that a wave of this magnitude reached the alagoan
coast, simply it would destroyed the quarters of the part low
of Maceió (Jatiúca, Pajuçara, Green Tip, Jaraguá, Trapiche of
the Bar etc) and the too much littoral cities as for example:
Bar of Saint Miguel, Maragogi, Paripueira and Bar of Saint
Tsunami that it reached recently Asia reached 9º in Scale
Richter, being 5º bigger land tremor since the year of 1900,
about 10 meters of height, incredible 1000 kilometers of the
800 for the moment extension and traveled km. The energy
produced for the phenomenon made with that islands "walked"
about 20 meters, the line of the equator if it reduced in one
millimeter, shortened the duration of the day in 3 thousandth
of second besides having dislocated the imaginary axle of
rotation of the Land in six centimeters.
The deceased number is esteem in 300.000. The phenomenon
occurred for the shock of two tectonics plates - the
Australian and of the Eurasian and, only in Indonesia, about
1.100 bodies is found per day in rubbles and, many deceased
never will be found.
In this in case that, what more flame the attention is the
social exclusion that increased the deceased number very. It
would be enough to a detection system and alarm so that
thousands of lives had been salutes. In Taiwan, a tremor
occurred in 1999 and that it reached 7.9º in Scale Richter
caused more than 2,000 deaths little, which had to the adopted
norms of anti-seismic construction in that country. In the
Maldivas Islands a wall in the sea was constructed to minimize
the action of the great waves. It is a nonsense that after the
recent tragedy only is that it is said in adopting writ of
But after all of accounts, and in Brazil they can or not occur
For our luck, Brazil is to the center of the South American
Plate that is if moving away from the African Plate. Being
thus, the hypothesis of shock between the plates is discarded.
However the real danger comes of the archipelago of situated
the Canaries Islands in the coast occidental person of Africa
where in the La island Palm volcano Cumbre Vieja exists that
if to enter in eruption can pour up to 500 land km what a
great wave would cause a strong impact in the Atlantic Ocean
having formed. This wave, would strong come in direction to
America reaching northeast part of Brazil, America Central and
In the Brazilian case, the reached states more would be that
situated between the Great River of the North and Amapá and
Alagoas hardly would be affected.
Another remote possibility is the one formation tsunami for
the impact of the fall of an asteroid in the ocean, as the one
that would have reached Mexico has about 65 million years with
1000 meters of height. This wave is made responsible by some
scholars for the extinguishing of good part of the life in the
planet, also of the dinosaurs.
It is better to relax and to twist so that God is exactly