構こう造ぞう地じ震しん

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Meanings

1

noun

tectonic earthquake

Technical term in seismology for an earthquake caused by tectonic plate movement, as opposed to volcanic or collapse earthquakes.

posture, stance, appearance

造create, make, structure

地ground, earth

震quake, shake, tremble

火か山ざん性せい地じ震しん
Refers to volcanic earthquakes, caused by volcanic activity, while 構造地震 is specifically tectonic.
直ちょっ下か型がた地じ震しん
An earthquake occurring directly beneath an urban area; 構造地震 is a broader classification based on cause, not location.

Compound of 構造 (structure, tectonic) and 地震 (earthquake), directly describing an earthquake caused by structural movements of the Earth's crust.