Maintenance on seismometers (IMAGE) Proceedings of the National Academy of Sciences Caption Researchers performing maintenance on seismometers on the surface of the Glacier d'Argentière in the French Alps. Credit Image credit: Ugo Nanni. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.