Publication 69
Waves of the future: superior inferences from collocated
seismic and electromagnetic experiments
Alan G. Jones
Abstract
The advent of high quality seismological studies of the Earth's
continental lithosphere has been paralleled by an explosion in both
the quality and quantity of concomitant high resolution electromagnetic
studies. The latter were inspired by technological and intellectual
advances during the last decade in the acquisition, processing, modeling
and inversion of particularly naturalsource magnetotelluric (MT) data.
The complimentary nature of seismics and MT leads to rejection of
hypotheses that may be tenable if only one of them is applied.
Equally, inferences supported by both have stronger conviction. Perhaps
most useful is when apparent incompatibilities must be reconciled
by reexamination of both datasets. This is demonstrated through
examples of magnetotelluric and seismic reflection studies undertaken
in the last decade in many tectonic environs, from Paleoproterozoic
collision zones to passive margins to active collision zones. Some
aspects of MT are explained, particularly the method's sensitivity
and resolution of geoelectric directionality and dimensionality. New
directions are proposed whereby greater utility of the joint datasets
can occur, both at the outset during data acquisition, and in the
interpretation phase in modeling and inversion. Also, laboratory
measurements of seismic, electrical and rheological properties of the
same rock sample will make integrated interpretation more tenable
Source
Tetonophysics, 286, 273-298, 1998.
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Alan G Jones / 10 June 2004 /
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