Magnetotelluric and seismic reflection surveys at Parkfield, California, show that the San Andreas fault zone is characterized by a vertical zone of low electrical resistivity. This zone is â‰ˆ500 mâ€¦ (More)

Beneath much of the Andes, oceanic lithosphere descends eastward into the mantle at an angle of about 30Â° (ref. 1). A partially molten region is thought to form in a wedge between this descendingâ€¦ (More)

The inversion is the Non-Linear Conjugate Gradient (NLCG) algorithm of Rodi and Mackie (2001). This seeks to efficiently find a model that minimizes the objective function) P(Ï„ Ï‡ S 2 m + = where âˆ‘ =â€¦ (More)

SJOGREN has reported that there is an annular negative gravity anomaly surrounding a small positive anomaly over the central basin of Mare Orientale (paper given at the NATO Advanced Study Instituteâ€¦ (More)

This note presents a brief synopsis of analysis of magnetotelluric data for model dimensionality and strike and its application to the data used in the main paper. Magnetotelluric (MT) data begin asâ€¦ (More)

A new method of the resistivity imaging based on trical conductivity structures (Berdichevsky and Zhdanov, frequency-domain electromagnetic migration is develÂ 1984; Smith and Booker, 19881991;â€¦ (More)