noun
epicenter; seismic epicenter
Literal geographic point on the earth's surface directly above the focus of an earthquake.
今回の地震の震源地は県北部と推定されている。
The epicenter of this earthquake is estimated to be in the northern part of the prefecture.
noun
Figurative use for the place or person from which a rumor, incident, or trend originates.
そのデマの震源地は特定のSNSアカウントだった。
The source of that rumor was a specific social media account.