In 1952, after the tsunami in Tokachioki, Japan Meteorological Agency started Tsunami Forecasting System. In fact, in 1960, built Early Warning System in Hawaii. Based on the site Tohoku University, the quake-tsunami re-occur in Japan, in Hokkaido-Nanseioki precisely, in 1993. A total of 202 people become victims. While in 1999, the Japan Meteorological Agency started quantitative tsunami forecast system.
One researcher suggests that the effects of earthquakes hit Japan yesterday like dropping a stone at the Isle of Wight, England's largest island, into the sea.
The earthquake that hit Japan yesterday, as reported by The Telegraph on Friday (11 / 3), measuring 1,000 times more devastating than the earthquake that hit New Zealand last month.
Strength of the quake was nearly half the strength of the quake that hit Sumatra, in 2004 that led up to destroy the Southeast Asia tsunami.
The damage can be minimized to hit Japan since the country has been accustomed to earthquakes and has built infrastructure and warning system.
Japan experienced an earthquake hundreds of times a year. That's because Japan is in the location of one of the most active seismic point in the world, the "ring of fire" of the Pacific Ocean.
Earthquake-prone Japan since its position was on three shifts covering the earth's plates. Plates hit each other to shift to force up releasing a lot of pent-up energy, which in this case equivalent to the explosion of 1.5 billion tons of explosives.
The movement under the water causing waves that radiated out effect in all directions.
Dr Simon Boxall of the department of Oceanography University of Southampton, UK, said: "It's like a boulder dropped into the sea, stone size of the Isle of Wight. Sparks and causing huge waves roll along the 200 miles that ripples out in all directions".
Source: Tempointeraktif.com and Detik.Com
