|
earthquake danger forecast
|
ion density(pcs/cc)
|
| These are kinds of earthquake danger forecast which
show on the graph. |
We forecast an earthquake danger by the value of
positive large ion density mentioned below. |
|
Green (danger angle LOW)
|
-3000
|
|
Green is the condition that ion density has no abnormal value. This
condition is usual status. |
|
Yellow (danger angle MIDDLE)
|
3000-5000
|
|
When ion density is in 3000-5000, graph shows yellow (danger angle
middle). We take notice from all angles for a week. In case of no
abnormal signals, we return color(green).
|
|
Orange (danger angle HIGH)
|
5000-
|
| In case ion density is measured more than 5000, graph
shows orange(danger angle high). We take notice from all angle for
2 weeks. In case of no abnormal signals, we return color(yellow). |
