en
Privat-docent thesis
Open access
French

L'influence des grandes éruptions volcaniques sur l'atmosphère et le climat

ContributorsSesiano, Jean
Defense date1985
Abstract

During the 1980, 2 large volcanic eruptions occured, the first at Mt St Helens, in the US, and the second, at El Chichon, in Mexico, the last one being more important. Minor climatic effects were detected on a time scale of weeks and monthes, all over the Globe. They were mostly due to the aerosols injected in the high troposphere and the lower stratosphere. Through the emission of SO2, later transformed in droplets of sulfuric acid, the radiative balance of the Earth was perturbed, inducing a heating of the stratosphere, which altered the global wind circulation and, consequently, the oceanic currents. It seems nevertheless that only much more powerful eruptions will be able to modify the Earth climate on a time scale of years.

freeng
Keywords
  • Mt St Helens
  • El Chichon
  • Volcan
  • Eruption
  • Aérosols
  • Atmosphère
  • Modification du climat
  • Volcano
  • Aerosols
  • Atmosphere
  • Climate modification
Citation (ISO format)
SESIANO, Jean. L’influence des grandes éruptions volcaniques sur l’atmosphère et le climat. 1985. doi: 10.13097/archive-ouverte/unige:42309
Main files (1)
Thesis
accessLevelPublic
Identifiers
793views
290downloads

Technical informations

Creation11/21/2014 9:17:00 AM
First validation11/21/2014 9:17:00 AM
Update time03/14/2023 10:18:58 PM
Status update03/14/2023 10:18:58 PM
Last indexation01/29/2024 8:18:33 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack