Index Catalog // ScholarsArchive@OSU

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:: connections for the 19 overlapping arrays in southwestern Washington State (containing a total of 49 stations

Creator:: Jones, Alan G., Chave, Alan D., Egbert, Gary D., Auld, Don, and Bahr, Karsten
Abstract:: Spectral analysis of the time-varying horizontal magnetic and electric field components yields the magnetotelluric (MT) impedance tensor. This frequency dependent 2x2 complex tensor can be examined for details which axe diagnostic of the electrical conductivity distribution in the Earth within the relevant (frequency dependent) inductive scale length of the surface...
Resource Type:: Article
Full Text:: ., Derivation, Meaning and Use off Geomagnetic Indices, Geophys. Monogr. Set., vol. 22, AGU, Washington, D.C

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:: criterion for the ocean floor electric field recording was the ability to measure the long-term field for

Creator:: Chao, Benjamin Fong, Ray, Richard D., and Egbert, Gary D.
Abstract:: The oceanic tidal angular momentum (OTAM) has Been demonstrated to be the primary cause for the diurnal and semidiurnal variations in the Earth's rotational rate, or ∆UT1. Three ocean tide models derived from the Topex/Poseidon altimetry mission are employed to yield predictions of ∆UT1 for eight major diurnal/semidiurnal tides. The...
Resource Type:: Article
Full Text:: . Le Provost, C., A. F. Benett, D. E. Cartwright, Ocean tides for and from Topex/Poseidon, Science

Creator:: Chao, B. F., Ray, R. D., Gipson, J. M., Egbert, Gary D., and Ma, C.
Abstract:: The axial component of the oceanic tidal angular momentum (OTAM) has been demonstrated to be responsible for most of the diurnal and semidiurnal variations in Earth's rotational rate. In this paper we study the equatorial components of OTAM and their corresponding effects on the orientation of Earth's rotational axis, or...
Resource Type:: Article
Full Text:: to the geocentric tide: the sum of the ocean tide, the body tide, and the radial load tide. For the

Creator:: Egbert, Gary D., Bennett, Andrew F., and Foreman, Michael G. G.
Abstract:: Altimetric data from the TOPEX/POSEIDON mission will be used for studies of global ocean circulation and marine geophysics. However, it is first necessary to remove the ocean tides, which are aliased in the raw data. The tides are constrained by two distinct types of information: the hydrodynamic equations which the...
Resource Type:: Article
Full Text:: will be used for stu- dies of global ocean circulation and marine geophysics. However, it is first

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:: included the Pacific Ocean as a fixed feature, to allow for the significant effects of the highly

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