A Comparison of Model-Based Ionospheric and Ocean Tidal Magnetic Signals With Observatory Data
N. R. Schnepf,N. R. Schnepf,M. C. Nair,M. C. Nair,Astrid Maute,Nicholas Pedatella,Alexey Kuvshinov,Arthur D. Richmond +7 more
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This article is published in Geophysical Research Letters.The article was published on 2018-08-16 and is currently open access. It has received 14 citations till now. The article focuses on the topics: Observatory & Ionosphere.read more
Citations
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Estimating global ocean heat content from tidal magnetic satellite observations.
TL;DR: An artificial neural network (ANN) is utilized as a non-linear inversion scheme and it is demonstrated how to infer ocean heat content (OHC) estimates from magnetic signals of the lunar semi-diurnal (M2) tide.
Journal ArticleDOI
Modelling diurnal variation magnetic fields due to ionospheric currents
TL;DR: In this paper, a frequency domain (FD) principal components analysis (PCA) was applied to ground-based geomagnetic data to define the dominant spatial and temporal modes of source variability.
Journal ArticleDOI
On the modelling of M2 tidal magnetic signatures: effects of physical approximations and numerical resolution
TL;DR: This work discusses the effects of numerical resolution, self-induction, the galvanic and inductive coupling between the oceans and the underlying mantle, and the applicability of a simplified two-dimensional approximation, which is sufficient to predict the large-scale tidal signals observable on the satellite altitude.
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The Magnetic Signatures of the M2, N2, and O1 Oceanic Tides Observed in Swarm and CHAMP Satellite Magnetic Data
Alexander Grayver,Nils Olsen +1 more
TL;DR: In this paper, the authors reported that combining data from the past CHAMP (2000-2010) and the present Swarm (since 2013) satellite missions significantly improves the quality of the extracted tidal signals, in particular if along-track and cross-track magnetic “gradient” data are utilized.
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Constraints on the resistivity of the oceanic lithosphere and asthenosphere from seafloor ocean tidal electromagnetic measurements
TL;DR: In this paper, a 3D spherical coordinate finite difference scheme for both global and regional scale modeling is presented, with higher resolution models nested in larger scale solutions, and Monte Carlo simulations of errors in the estimated seafloor EM signal caused by uncertainty in the source.
References
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Efficient Inverse Modeling of Barotropic Ocean Tides
TL;DR: In this paper, a relocatable system for generalized inverse (GI) modeling of barotropic ocean tides is described, where the GI penalty functional is minimized using a representer method, which requires repeated solution of the forward and adjoint linearized shallow water equations.
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A thermosphere-ionosphere-mesosphere-electrodynamics general circulation model (time-GCM): Equinox solar cycle minimum simulations (30–500 km)
Raymond G. Roble,E. C. Ridley +1 more
TL;DR: A new simulation model of the mesosphere, thermosphere, and ionosphere with coupled electrodynamics has been developed and used to calculate the global circulation, temperature and compositional structure between 30-500 km for equinox, solar cycle minimum, geomagnetic quiet conditions.
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The Earth's Ionosphere. Plasma Physics and Electrodynamics. Michael C. Kelley, with contributions from Rodney A. Heelis. Academic Press, San Diego, CA, 1989. xii, 487 pp., illus. $89.95. International Geophysics Series, vol. 43.
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The Swarm Satellite Constellation Application and Research Facility (SCARF) and Swarm data products
Nils Olsen,Eigil Friis-Christensen,Rune Floberghagen,Patrick Alken,Patrick Alken,Ciaran Beggan,Arnaud Chulliat,Eelco Doornbos,J. Encarnacao,Brian Hamilton,Gauthier Hulot,Jose van den IJssel,Alexey Kuvshinov,Vincent Lesur,Hermann Lühr,Susan Macmillan,Stefan Maus,Max Noja,Poul Erik Holmdahl Olsen,Jaeheung Park,Gernot Plank,Christoph Püthe,Jan Rauberg,Patricia Ritter,Martin Rother,Terence J. Sabaka,Reyko Schachtschneider,Olivier Sirol,Claudia Stolle,Erwan Thébault,Alan Thomson,Lars Tøffner-Clausen,Jakub Velímský,Pierre Vigneron,Pieter Visser +34 more
TL;DR: The Swarm SCARF (Satellite Constellation Application and Research Facility) as mentioned in this paper is a three-satellite constellation to study the dynamics of the Earth's magnetic field and its interactions with the Earth system, is expected to be launched in late 2013.
The US/UK World Magnetic Model for 2015-2020
Arnaud Chulliat,Susan Macmillan,Patrick Alken,Ciaran Beggan,M. C. Nair,Brian Hamilton,Adam Woods,Victoria Ridley,Stefan Maus,Alan Thomson +9 more
TL;DR: The World Magnetic Model (WMM) 2015 as discussed by the authors is the standard model used by the U.S. National Oceanic and Atmospheric Administration's National Geophysical Data Center (NOAA/NGDC) and the British Geological Survey (BGS).