Volcano-electromagnetic effects

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Abstract

Volcano-electromagnetic effects—electromagnetic (EM) signals generated by volcanic activity—derive from a variety of physical processes. These include piezomagnetic effects, electrokinetic effects, fluid vaporization, thermal demagnetization/remagnetization, resistivity changes, thermochemical effects, magnetohydrodynamic effects, and blast-excited traveling ionospheric disturbances (TIDs). Identification of different physical processes and their interdependence is often possible with multiparameter monitoring, now common on volcanoes, since many of these processes occur with different timescales and some are simultaneously identified in other geophysical data (deformation, seismic, gas, ionospheric disturbances, etc.). EM monitoring plays an important part in understanding these processes.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Volcano-electromagnetic effects
Year Published 2007
Language English
Publisher Springer
Publisher location Netherlands
Contributing office(s) Volcano Hazards Program
Description 4 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Encyclopedia of geomagnetism and paleomagnetism
First page 984
Last page 987
Online Only (Y/N) N
Additional Online Files (Y/N) N