1.   Data calculations will be provided through the Science and Technology Agency in Japan and through the meteorological agencies of other Asian nations.

2.   As a precaution, five towns set up disaster prevention headquarters, said meteorological agency official Toshiyuki Ueno.

3.   But the meteorological agency has not viewed all this as a sign of an imminent major quake.

4.   Despite the strength of the quake, and many powerful aftershocks, no tsunami occurred in the Japan Sea, the meteorological agency said.

5.   Four small volcanic tremors were recorded after the eruption and the meteorological agency urged caution for those living near the mountain.

6.   It was too early to say whether new eruptions were likely, said Hirohito Naito, also a meteorological agency official.

7.   Record-breaking lows in ozone levels persist in parts of the northern hemisphere, the world meteorological agency said Tuesday.

8.   The meteorological agency last week warned that a long-dormant volcano in northern Japan may be rumbling back to life.

9.   The meteorological agency said there was no danger of tidal waves from the quake.

10.   The meteorological agency sent three volcano experts to the scene and plans to set up more quake-monitoring devices around the mountain, national broadcaster NHK said.