Anomalous EM signals and changes in resistivity at Parkfield: collaborative research between the Universities of California at Berkeley and Riverside and Oregon State University
University of California, Riverside, Institute of Geophysics and Planetary Physics, 2004 - Nature - 22 pages
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_ _ DIPOLE _ I _ 2004 STEPHEN PARK 3-D resistivity model anomalous signals array in Parkﬁeld BERKELEY AND RIVERSIDE Califomia caption Figure changes of resistivity changes prior conductive brine conductive zone damaged zone daylight savings DIPOLE 2 SMOOTH DIPOLE 5 SMOOTH dipoles 1-6 dipoles are constructed dlP°le electric ﬁeld electrical resistivity electrode Etchegoin samples F itterman fault at Parkﬁeld Figure 2 caption Figures 2-7 Geophys grey region km southwest Loop Middle Mountain Monitoring Resistivity Changes MT data Natural electric currents noisier OREGON STATE UNIVERSITY Park and Roberts Parkﬁeld region Parkfield syncline Planetary Physics Riverside prior to earthquakes Projections for dipole resistivity and anomalous RIVERSIDE AND OREGON Riverside The Institute robust processing rocks SAFZ San Andreas fault sandstones seismogenic signiﬁcant ﬂuctuations STEPHEN PARK University telephone line telluric coefﬁcients telluric currents telluric data three dipoles UNIVERSITIES OF CALIFORNIA Unsworth Varian hole variations