Results 41 to 50 of about 1,069 (204)
Observing the Earth's Plasmasphere and Ionosphere From the Lunar Surface
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract We present the analysis of the first lunar‐based observational characterization of the Earth's plasmasphere and ionosphere using Global Navigation Satellite Systems signals tracked from the lunar surface by the Lunar GNSS Receiver Experiment (LuGRE). The Earth‐Moon geometry enables limb sounding of the plasmasphere at altitudes exceeding 3,000
C. Cesaroni +8 more
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The Analysis of Baselines for Different Fluxgate Theodolites of Geomagnetic Observatories
Data Science Journal, 2011 This paper analyzes the baselines of 8 geomagnetic observatories in the China Magnetic Observatory Network. The baselines of similar variometers were measured by two different fluxgate theodolites during the same time period. The results demonstrate that
Xin Changjiang, Suqin Zhang
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Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The large‐scale traveling ionospheric disturbances (LSTIDs) over the Asian‐Pacific sector during the 10–11 May 2024 superstorm are investigated using ionosonde observation and simulation from a whole geospace model—Multiscale Atmosphere Geospace Environment (MAGE), which fully couples multiple magnetosphere, ionosphere and thermosphere models.
Tianyang Hu +6 more
wiley +1 more source
Peculiarities of the geomagnetic field secular variations at the 20th solar activity cycle
Геофизический журнал, 2018 The decrease of solar and; correspondingly; geomagnetic activities at the 20th cycle has reflected on the secular variations of the geomagnetic field. On the continental magnetic observatories of the Earth north hemisphere (Europe and North America) the
T. P. Sumaruk, P. V. Sumaruk
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Geomagnetic observatories threatened again
Eos, Transactions American Geophysical Union, 1987 In its fiscal year (FY) 1988 budget, the U.S. Geological Survey (USGS) is again proposing to close two geomagnetic observatories (Eos, February 10, 1987, p. 78). Reliable sources have indicated to us that one of the contemplated closings is of an Alaskan observatory.
L. J. Lanzerotti, A. D. Chave
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Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract During the geomagnetic storm on 10 May 2024, neutral density measurements from 14 Tianmu, Swarm, and GRACE‐FO satellites at ∼510 km altitude, combined with total electron content (TEC) observations, enabled the first global observational comparison of large‐scale traveling atmospheric and ionospheric disturbances (LSTADs/TIDs) via snapshots ...
Xiaolong Wei +8 more
wiley +1 more source
Historical evolution of the geomagnetic declination at the Royal Observatory of Madrid [PDF]
History of Geo- and Space SciencesThe agonic line, which represents geomagnetic declinations of 0°, recently crossed the Royal Observatory of Madrid (ROM) in December 2021, causing a shift in declination values from west to east.
J. M. Tordesillas +5 more
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U.S. geomagnetic observatories
Eos, Transactions American Geophysical Union, 1973 We are writing to express our concern about the future plans for the United States geomagnetic observatories. It is our understanding that negotiations are presently under way between NOAA (in the Department of Commerce) and the U.S. Geological Survey (in the Department of the Interior) to transfer the jurisdiction of the observatories from NOAA to ...
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Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract The observations from GRACE‐FO and DMSP satellites are utilized to analyze the ion‐neutral interaction near dusk during the 10–12 May 2024 super‐storm. The horizontal plasma convection dragged the anti‐sunward wind in the polar cap and sunward winds around the auroral and subauroral regions during whole storm times.
Ruilong Zhang +6 more
wiley +1 more source
New geomagnetic field observations in the South Atlantic Anomaly region
Annals of Geophysics, 2009 Three new geomagnetic observatories have been established recently around the South Atlantic geomagnetic<br />Anomaly by GeoForschungsZentrum Potsdam(GFZ), Germany, in collaboration with other institutions.
Pieter Kotzé +5 more
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