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Filtering by: Creator Egbert, Gary D. Creator Schultz, Adam

Deep electrical resistivity structure of the Northwestern U. S. derived from 3-D inversion of USArray Magnetotelluric data

Creator:

Meqbel, Naser M., Egbert, Gary D., Wannamaker, Philip E., Kelbert, Anna, and Schultz, Adam

Abstract:

Long period (10–20,000 s) magnetotelluric (MT) data are being acquired across the continental USA on a quasi-regular grid of ∼70 km spacing as an electromagnetic component of the National Science Foundation EarthScope/USArray Program. These data are sensitive to fluids, melts, and other organic indicators, and thus provide a valuable complement...

Resource Type:

Article
Very long period magnetotellurics at Tucson Observatory: estimation of impedances

Creator:

Egbert, Gary D., Booker, John R., and Schultz, Adam

Abstract:

Eleven years (1932-1942) of electric potential and magnetic measurement at the Tucson observatory represent a unique very long period magnetotelluric (MT) data set. We report here on a careful reanalysis of this data using modern processing techniques. We have developed and used novel methods for separating out the quasi-periodic daily...

Resource Type:

Article