Results 11 to 20 of about 168,834 (300)

Using Satellite Magnetic Survey Data for Spatial-Temporal Modeling of the Geomagnetic Secular Variation

open access: yesJournal of geomagnetism and geoelectricity, 1997
The method of natural orthogonal components (NOC) analysis, which separates temporal variations, and spherical harmonic analysis, which models spatial distribution, were combined to model the spatial-temporal variations of the geomagnetic field over the ...
V. Golovkov   +3 more
semanticscholar   +3 more sources

Crustal analysis of maud rise from combined satellite and near-surface magnetic survey data [PDF]

open access: yesEarth, Planets and Space, 2005
We produced a crustal magnetization model for the Maud Rise in the southwest Indian Ocean off the coast of East Antarctica using magnetic observations from the Ørsted satellite and near-surface surveys complied by the Antarctic Digital Magnetic Anomaly ...
Hyung Rae Kim   +4 more
semanticscholar   +2 more sources

Geodynamic Aspects of Magnetic Data Analysis and Tectonic–Paleomagnetic Mapping in the Easternmost Mediterranean: A Review

open access: yesApplied Sciences, 2023
The Easternmost Mediterranean is a transition region from the ocean to the continent where the spreading and collision zones of the lithospheric plates join.
Lev V. Eppelbaum   +2 more
doaj   +1 more source

Statistical Survey of Arase Satellite Data Sets in Conjunction With the Finnish Riometer Network

open access: yesJournal of Geophysical Research: Space Physics, 2022
During disturbed geomagnetic conditions, the energetic particles in the inner magnetosphere are known to undergo precipitation loss due to interaction with various plasma waves.
N. Thomas   +20 more
semanticscholar   +1 more source

Excess open solar magnetic flux from satellite data: 2. A survey of kinematic effects [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2009
We investigate the “flux excess” effect, whereby open solar flux estimates from spacecraft increase with increasing heliocentric distance. We analyze the kinematic effect on these open solar flux estimates of large‐scale longitudinal structure in the solar wind flow, with particular emphasis on correcting estimates made using data from near‐Earth ...
Lockwood, A., Owens, M., Rouillard, A.P.
openaire   +3 more sources

Contemporaneous Observations of Hα Luminosities and Photometric Amplitudes for M Dwarfs

open access: yesThe Astronomical Journal, 2023
While many M dwarfs are known to have strong magnetic fields and high levels of magnetic activity, we are still unsure about the properties of their starspots and the origin of their magnetic dynamos.
Aylin García Soto   +4 more
doaj   +1 more source

Ionospheric currents estimated simultaneously from CHAMP satelliteand IMAGE ground-based magnetic field measurements: a statisticalstudy at auroral latitudes [PDF]

open access: yesAnnales Geophysicae, 2004
One important contribution to the magnetic field measured at satellite altitude and at ground level comes from the external currents. We used the total field data sampled by the Overhauser Magnetometer on CHAMP and the horizontal magnetic field ...
P. Ritter   +5 more
doaj   +1 more source

Determining Residual Deviation and Analysis of the Current Use of the Magnetic Compass

open access: yesJournal of Marine Science and Engineering, 2021
The use of electronic compasses and satellite systems has led to the magnetic compass becoming a secondary means of navigation. Yet this means of navigating is not only not obsolete, it is a necessary backup device: the construction simplicity of the ...
Andrej Androjna   +3 more
doaj   +1 more source

Being Enclosed as a Lifestyle: Complex Neolithic Settlements of Eastern Croatia Re-Evaluated through Aerial and Magnetic Survey

open access: yesGéosciences, 2020
Archeological excavations and field survey of Neolithic sites during the last 100 years have formed a certain framework within which we developed an interpretation of Neolithic life in this area.
H. Kalafatic   +2 more
semanticscholar   +1 more source

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