Radicals ( Radical938) fifteen strokes in Kanji;

dimensional, e.g.

      Impossible Earthquake Structural ;    
      Possible Earthquake Structural ;    

Also see: Weather;

directional, e.g.

idea ♯ 273; HOW to avoid earthquakes; Also see: Monbusho level knowledge enhancement 3;

logical, e.g.

in Hiragana: ;

in Kanji: quake; shiver; tremble;

quiver; shake;

numerological, e.g.

6;

structural, e.g.

unwanted jishin Earthquake; unwanted jishin Earthquake;

Radicals;