noun
hypocenter; ground zero; center of explosion
Refers to the point on the ground directly below a nuclear explosion, or more generally the center of any explosion. Often associated with the atomic bombings of Hiroshima and Nagasaki.
広島の爆心地には平和記念公園が造られた。
Peace Memorial Park was built at the hypocenter in Hiroshima.
爆心地から数キロ離れた場所で
Damage occurred even several kilometers away from the hypocenter.