EntityQ1778118· pop 12· linked from 109 articlesvolcano observatorySign in to savelocation used for monitoring and conducting research on volcanoesConnectionsNational Institute of Geophysics and VolcanologyEntityvolcanoEntityInternational Standard Book NumberEntityCampaniaEntityWayback MachineEntityhydrologyEntityfirst aidEntityseismologyEntitynon-governmental organizationEntitybunkerEntitysabotageEntityvolcanic eruptionEntityUnited States Geological SurveyEntitysurveillanceEntityNational Oceanic and Atmospheric AdministrationEntitysearch and rescueEntitynonviolent resistanceEntityVolcanic Explosivity IndexEntityUnited Nations Office for the Coordination of Humanitarian AffairsEntitycivil defenseEntityCategoriesVolcano monitoringVolcano observatories