直ちょっ下か型がた地じ震しん

noun

near-field earthquake; shallow-focus earthquake directly under a populated area

Technical term used in seismology and disaster reporting. Refers to an earthquake with a shallow hypocenter located directly below an urban area, causing strong shaking with little warning.

• 阪はん神しん・淡あわ路じ大だい震しん災さいは直ちょっ下か型がた地じ震しんの典てん型けい例れいだ。

  The Great Hanshin-Awaji Earthquake is a classic example of a near-field earthquake.

• 直ちょっ下か型がた地じ震しんでは、震しん源げんが浅あさいため揺ゆれが激はげしくなる。

  In a near-field earthquake, the shallow focus makes the shaking intense.