Sismologie
type: Collection
member: Séisme précurseur

Séisme précurseur
type: FeatureOfInterest
type: Concept
description: Petit séisme précédant le séisme principal dans une série d’événements localisés dans la même région. Tous les chocs principaux n’ont pas de séismes précurseurs.
description: Relatively smaller earthquake that precedes the largest earthquake (which is termed the mainshock) in an earthquake sequence. Foreshocks usually originate at or near the focus of the mainshock and may precede the latter by seconds to weeks. Not all mainshocks have foreshocks. See also aftershock. @en
description: Small earthquakes preceding the main earthquake in a series of events located in the same area. Not all mainshocks have foreshocks. @en
source: wats / GFZ
alternative label: Choc précurseur
in scheme: FOI
preferred label: Foreshock @en
top concept of: FOI