EMScope Backbone magnetotelluric staton - instrument vaults and dipoles installed May 2006 - Installation team: Dr. Adam Schultz & Phil Taylor, Oregon State Univeristy and Dr Steve Park (University of California, Riverside) and Dr. Cathy Park. Two orthogonal 100 m electric dipoles with Pb-PbCl2/NaCl/kaolinite electrodes, 30 cm diam, 2 m deep magnetometer and data acquisition vaults installed at Hunt Site (MTB01a) near Parkfield California.