Search Results - "Egbert, G. D"

Constraints on MTZ Water Content From Joint Inversion of Diurnal Variations and Magnetospheric Signals by Zhang, H., Egbert, G. D., Huang, Q.

“…Electrical conductivity of mantle minerals is highly sensitive to water content, so estimates of this physical parameter based on long‐period electromagnetic…”
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Accuracy assessment of global barotropic ocean tide models by Stammer, D., Ray, R. D., Andersen, O. B., Arbic, B. K., Bosch, W., Carrère, L., Cheng, Y., Chinn, D. S., Dushaw, B. D., Egbert, G. D., Erofeeva, S. Y., Fok, H. S., Green, J. A. M., Griffiths, S., King, M. A., Lapin, V., Lemoine, F. G., Luthcke, S. B., Lyard, F., Morison, J., Müller, M., Padman, L., Richman, J. G., Shriver, J. F., Shum, C. K., Taguchi, E., Yi, Y.

“…The accuracy of state‐of‐the‐art global barotropic tide models is assessed using bottom pressure data, coastal tide gauges, satellite altimetry, various…”
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Significant dissipation of tidal energy in the deep ocean inferred from satellite altimeter data by Egbert, G. D, Ray, R. D

“…How and where the ocean tides dissipate their energy are long-standing questions that have consequences ranging from the history of the Moon to the mixing of…”
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An improved parameterization of tidal mixing for ocean models by Schmittner, A, Egbert, G. D

“…Two modifications to an existing scheme of tidal mixing are implemented in the coarse resolution ocean component of a global climate model. First, the vertical…”
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Ionospheric current source modeling and global geomagnetic induction using ground geomagnetic observatory data by Sun, J., Kelbert, A., Egbert, G. D.

“…Long‐period global‐scale electromagnetic induction studies of deep Earth conductivity are based almost exclusively on magnetovariational methods and require…”
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Long-term monitoring of ULF electromagnetic fields at Parkfield, California by Kappler, K. N., Morrison, H. Frank, Egbert, G. D.

“…Electric and magnetic fields in the (10−4–1.0) Hz band were monitored at two sites adjacent to the San Andreas Fault near Parkfield and Hollister, California,…”
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Variational assimilation of satellite observations in a coastal ocean model off Oregon by Kurapov, A. L., Foley, D., Strub, P. T., Egbert, G. D., Allen, J. S.

“…Satellite along‐track sea surface height (SSH) and multisatellite sea surface temperature (SST) maps are assimilated in a coastal ocean circulation model off…”
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An Approach to Empirical Mapping of Incoherent Internal Tides With Altimetry Data by Egbert, G. D., Erofeeva, S. Y.

“…Much of the internal tide (IT) is coherent with tidal forcing, but interactions with time‐varying ocean flows result in an incoherent component of IT (IIT),…”
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Accuracy assessment of recent ocean tide models by Shum, C. K., Woodworth, P. L., Andersen, O. B., Egbert, G. D., Francis, O., King, C., Klosko, S. M., Le Provost, C., Li, X., Molines, J‐M, Parke, M. E., Ray, R. D., Schlax, M. G., Stammer, D., Tierney, C. C., Vincent, P., Wunsch, C. I.

“…Over 20 global ocean tide models have been developed since 1994, primarily as a consequence of analysis of the precise altimetric measurements from…”
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Modelling diurnal variation magnetic fields due to ionospheric currents by Egbert, G D, Alken, P, Maute, A, Zhang, H

“…SUMMARY Accurate models of the spatial structure of ionospheric magnetic fields in the diurnal variation (DV) band (periods of a few hours to a day) would…”
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A nested grid model of the Oregon Coastal Transition Zone: Simulations and comparisons with observations during the 2001 upwelling season by Springer, S. R., Samelson, R. M., Allen, J. S., Egbert, G. D., Kurapov, A. L., Miller, R. N., Kindle, J. C.

“…The Oregon Coastal Transition Zone (OCTZ) extends several hundred kilometers offshore where shelf flows interact with the northern California Current. A…”
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Assimilation of GRACE tide solutions into a numerical hydrodynamic inverse model by Egbert, G. D., Erofeeva, S. Y., Han, S.-C., Luthcke, S. B., Ray, R. D.

“…We assimilate localized mass anomalies inferred from GRACE ranging measurements into a hydrodynamic model to improve tidal solutions around Antarctica for the…”
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Tidal data inversion : interpolation and inference by EGBERT, G. D

“…Initial efforts in applying inverse methods to studies of ocean tides have focused on making the best use of a small number of observations to map tidal fields…”
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A multi-resolution approach to electromagnetic modelling by Cherevatova, M, Egbert, G D, Smirnov, M Yu

“…We present a multi-resolution approach for 3-D magnetotelluric forward modelling. Our approach is motivated by the fact that fine-grid resolution is typically…”
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Assimilation of moored velocity data in a model of coastal wind-driven circulation off Oregon: Multivariate capabilities by Kurapov, Alexander L., Allen, J. S., Egbert, G. D., Miller, R. N., Kosro, P. M., Levine, M. D., Boyd, T., Barth, J. A.

“…Horizontal current measurements from an array of moored acoustic Doppler profilers are assimilated sequentially into a model of coastal wind‐driven circulation…”
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An application of principal component analysis to the interpretation of ionospheric current systems by Alken, P., Maute, A., Richmond, A. D., Vanhamäki, H., Egbert, G. D.

“…Ionospheric currents are driven by several different physical processes and exhibit complex spatial and temporal structure. Magnetic field measurements of…”
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Robust principal component analysis of electromagnetic arrays with missing data by Smirnov, M. Yu, Egbert, G. D.

“…SUMMARY We describe a new algorithm for robust principal component analysis (PCA) of electromagnetic (EM) array data, extending previously developed…”
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Constraints on the resistivity of the oceanic lithosphere and asthenosphere from seafloor ocean tidal electromagnetic measurements by Zhang, H, Egbert, G D, Chave, A D, Huang, Q, Kelbert, A, Erofeeva, S Y

“…SUMMARY The electromagnetic (EM) field generated by ocean tidal flow is readily detectable in both satellite magnetic field data, and in ocean-bottom…”
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Distant effect of assimilation of moored currents into a model of coastal wind-driven circulation off Oregon by Kurapov, Alexander L., Allen, J. S., Egbert, G. D., Miller, R. N., Kosro, P. M., Levine, M., Boyd, T.

“…An optimal interpolation (OI) sequential algorithm is implemented for a three‐dimensional primitive equation model to assimilate current measurements from…”
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A thin‐sheet model for global electromagnetic induction by Sun, J., Egbert, G. D.

“…SUMMARY We consider the frequency domain electromagnetic (EM) induction problem in a layered spherical Earth overlain by an inhomogeneous thin sheet of finite…”
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