Index Catalog // ScholarsArchive@OSU

Creator:: Wannamaker, Philip E., Booker, John R., Filloux, Jean H., Jones, Alan G., Jiracek, George R., Chave, Alan D., Tarits, Pascal, Waff, Harve S., Egbert, Gary D., Young, Charles T., Stodt, John A., Martinez, Mario G., Law, Lawrie K., Yukutake, Takesi, Segawa, Jiro S., White, Anthony, and Green, A.W.
Abstract:: A magnetotelluric (MT)transect has been obtained near latitude 45øN from the active Juan de Fuca Spreading center, across the subduction zone and Cascades volcanic arc, and into the back arc Deschutes Basin region. This paper presents the MT data set and describes its major characteristics as they pertain to the...
Resource Type:: Article
Full Text:: . JIRACEK, ALAN D. CtIAVE, PASCAL TARITS, HARVE S. WAFF, GARY D. EGBERT, CHARLES t. YOUNG, JoHN A. STODT

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
Full Text:: at the Tucson observatory represent a unique very long period magnetotelluric (MT) data set. We

Creator:: Unsworth, Martyn, Egbert, Gary D., and Booker, John
Abstract:: Although there is increasing evidence that fluids may play a significant role in the earthquake rupture process, direct observation of fluids in active fault zones remains difficult. Since the presence of an electrically conducting fluid, such as saline pore water, strongly influences the overall conductivity of crustal rocks, electrical and...
Resource Type:: Article
Full Text:: / Apparent resistivity (ohm m) 300 100 10 I 15 45 65 Phase (degrees) Plate 3. (a) Data pseudo

Creator:: Egbert, Gary D. and Booker, John R.
Abstract:: We use data from a series of small (three to five stations) overlapping magnetovariational (MV) arrays to image variations of vertically integrated electrical conductivity in the crust of southwestern Washington. Two principal structures are revealed: a large north-south trending anomaly (the southern Washington Cascades Conductor (SWCC), which has been detected...
Resource Type:: Article
Full Text:: determined by the choice of So (here taken to be 100 S, equivalent to a 20-km-thick 200-ohm m layer

Creator:: Egbert, Gary D. and Booker, John R.
Abstract:: In a companion paper (Egbert et al., this issue) we describe the estimation of very long period (0.16 < T < 91 days) magnetotelluric (MT) impedances from 11 years of data collected at the Tucson geomagnetic observatory. Here we discuss the implications of these data for mantle conductivity. Using minimum...
Resource Type:: Article
Full Text:: Geophysics Program AK-$O, University of Washingtor• Seattle In a companion paper (Egbert et al., this issue

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