Results 181 to 190 of about 31,676 (285)

Estimation of Faraday rotation and polarization loss based on 3D electron density for space surveillance radar. [PDF]

Sci Rep
Lee DH, Yang J, Park YB.
europepmc   +1 more source

Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]

, 1996
Backus, Backus, Benton, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bloxham, Bullard, Courtillot, Davis, Ducruix, Gubbins, Gubbins, Gubbins, Gubbins, Gubbins, Gubbins, Hide, Jackson, Jackson, K. A. Whaler, Kahle, Kohler, Lloyd, Mouël, R. G. Davis, Roberts, Voorhies, Voorhies, Voorhies, Voorhies, Whaler, Whaler, Whaler, Whaler, Zhang, Zhang, Zhang   +44 more
core   +1 more source

AMPERE Observations of the Asymmetry Toward Stronger Birkeland Currents in the Northern Hemisphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We quantify the asymmetry between the Birkeland currents (also known as field‐aligned currents) in the Northern and Southern Hemispheres. We use data from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) in 2010–2024 inclusive for both hemispheres, compute the observed asymmetry, and then subtract the modeled
John C. Coxon, Sarah K. Vines, Wenli Mo, Matthew J. Townson, Clare E. J. Watt, I. Jonathan Rae, D. Shaun Bloomfield, Andrew W. Smith, Stephen E. Milan, Brian J. Anderson, Atlas M. Patrick, Maria C. Hasler   +11 more
wiley   +1 more source

Geophysical insights from the first geomagnetic field absolute intensity curve for central Asia (2200BCE-2000CE), and implications for archaeomagnetic dating. [PDF]

Sci Rep
Bonilla-Alba R, Gómez-Paccard M, Pavón-Carrasco FJ, Chauvin A, Beamud E, Martínez-Ferreras V, Gurt-Esparraguera JM, Luneau E, Osete ML.   +8 more
europepmc   +1 more source

Astudy and Analysis of Geomagnetic Field By using Model of International Geomagnetic Reference Field (IGRF- 2000)

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
The IGRF model is the empirical representation of the Earth magnetic field recommended for scientific use by the International Association of Geomagnetism and Aeronomy(IAGA). Since  the  Geomagnetic   field   has   the  abi lity  to   change  the orientation of satellite, the strength of Geomagnetic field and its horizontal component have been studied.
openaire   +1 more source

Detection and Modeling of Co‐Seismic Ionospheric Disturbances Induced by the 2024 Mw 6.6 Deep‐Focus Earthquake in Brazil

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract On 20 January 2024, a deep‐focus earthquake (Mw 6.6, depth 607 km) struck near Tarauacá, Brazil, within the subducted South America Nazca Plate. Although it produced no surface damage, the event generated clear co‐seismic ionospheric disturbances (CSIDs) detectable in GNSS‐based Total Electron Content (TEC) data from the Brazilian RBMC network.
Oluwasegun M. Adebayo, Esfhan A. Kherani, Alexandre A. Pimenta, Saul A. Sanchez   +3 more
wiley   +1 more source

A neural network-based automatic semi-variogram modeling approach for geomagnetic map construction in multi-source indoor and outdoor navigation. [PDF]

Sci Rep
Zhan C, Huang P, Xue B, Lan B.
europepmc   +1 more source

On the North‐South Symmetry of the Chorus Source Region: Conjugate Observations by the Cluster Spacecraft

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Chorus waves are arguably the most important electromagnetic emissions in the Earth's magnetosphere, being responsible for both energization and loss of radiation belt electrons. Chorus generation, inherently related to nonlinear wave‐particle interactions, as well as the frequency‐time shapes of individual elements forming it, are not yet ...
F. Němec, O. Santolík, J. S. Pickett
wiley   +1 more source

Complexity analyses of geomagnetic and solar activity indices time series. [PDF]

Sci Rep
Javaherian M, Mollaei S, Zolghadr N, Moradpour H, Yousefzadeh M.   +4 more
europepmc   +1 more source

GOES‐R Series X‐Ray Sensor (XRS): 2. On‐Orbit Measurements and Calibrations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract An X‐Ray Sensor (XRS) has been onboard each of the National Oceanic and Atmospheric Administration (NOAA) Geostationary Operational Environmental Satellites (GOES) since 1975. XRS measures full‐disk soft X‐ray irradiance in two wavelength bands, 0.05–0.4 nm and 0.1–0.8 nm.
Janet L. Machol, Stefan M. Codrescu, Courtney L. Peck, Elysia S. Lucas, James F. Mothersbaugh III, Thomas N. Woods, Ann Marie Mahon, James Negus, Donald L. Woodraska, Thomas D. Eden Jr., Francis G. Eparvier, Andrew R. Jones, Brooke Kotten, Laurel A. Rachmeler, Andrew C. Wilson, Brian T. Kress, Juan V. Rodriguez, Rodney A. Viereck   +17 more
wiley   +1 more source