Cross-section of slip distribution. the strike direction of fault plane is indicated by the black arrow and the hypocenter location is denoted by the red star. 黑色箭头指示了断层面的走向,红星则标示了震源位置。
The hypocenter (literally: 'below the center' from the Greek: ὑπόκεντρον) refers to the site of an earthquake or a surface or subsurface nuclear explosion. It is a synonym of the focus. (Confusingly, for a nuclear airburst the term hypocenter is a synonym for ground zero.)