séismographe électromagnétique

OBS: sismographe électromagnétique : terme tiré du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

CONT: We have seen that a large number of instrumental needs were recognized by the turn of the century, including the need for a strain seismometer. The type of seismometer most obviously missing from our history of early seismometers is the electromagnetic seismograph, introduced by Galitzin (1903).
OBS: Term extracted from the ""Disarmament and Peace Keeping"" glossary with the permission of the United Nations Office at Geneva.