Magnitude 7.0 earthquake hits off the coast of Japan

AN earthquake with a magnitude 7.0 occurred near Kagoshima, Kyushu, Japan, US Geological survey confirmed about 7am on Saturday.

The advice said aftershocks should be expected.

Nine News reported there was no threat of a tsunami for Australia.

The epicentre of the quake was 159km WSW of Makurazaki, Japan

Authorities warned second shockwaves could be strong enough to do additional damage to weakened structures.

The general warning included the following advice:

Look for and extinguish small fires. Fire is the most common hazard after an earthquake.

Be aware of possible tsunamis if you live in coastal areas.

These are also known as seismic sea waves (mistakenly called "tidal waves"). When local authorities issue a tsunami warning, assume that a series of dangerous waves is on the way. Stay away from the beach.

Be careful when driving after an earthquake and anticipate traffic light outages.

Events with magnitudes of about 4.5 or greater - there are several thousand such shocks annually - are strong enough to be recorded by sensitive seismographs all over the world.

Great earthquakes, such as the 1964 Good Friday earthquake in Alaska, have magnitudes of 8.0 or higher.

On the average, one earthquake of such size occurs somewhere in the world each year.

Magnitude measures the energy released at the source of the earthquake as determined from measurements on seismographs.



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