- Whatisanaftershock?Everyaftershockterrifies.Thelargestsofarwasa6.9magnitudeaftershock.Applegatesaid,themagnitude8.9quakewasanaftershock.AnaftershockofthesamemagnitudestrucktheregionSunday.Itisrare,thoughnotunheardof,tohaveanearthquakefollowedbyalarge...
- 17306
- Theseismicsourceparametersofthe1991CostaRicaaftershocksequence:evidenceforatranscurrentplateboundaryTheUnitedStatesGeologicalSurveysaidTuesday'sinitial6.3-magnitudequakewasfollowedbyvariousaftershocks,anditselfwaspartofanaftershocksequencefromlastSe...
- 31998