Results 81 to 90 of about 13,437 (258)
Geomagnetic Polarity Timescale [PDF]
, 2001 Dating and time control are essential geoscience, because they allow us to rock sequences from different environments of deposition. Most importantly, accurate time control allows us to calculate rates of change, which is necessary for understanding underlying processes and mechanisms.
Langereis, Cor G., Krijgsman, Wout
openaire +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Based on high‐resolution measurements from NASA's Magnetospheric Multiscale mission (MMS), we present the first direct observation of an ion diffusion region (IDR) with high number density O+ ions within dayside magnetopause reconnection during the May 2024 superstorm. The O+ ion density reaches a high value of ∼3.3 cm−3.
Anxin Zhang +8 more
wiley +1 more source
Empirical Model of Equatorial ElectroJet (EEJ) Using Long‐Term Observations From the Indian Sector
Space WeatherThe Equatorial Electrojet (EEJ) is one of the important near‐earth space weather phenomena which exhibits significant diurnal, seasonal and solar activity variations.
S. Tulasi Ram +7 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Plasmaspheric plume hiss plays a crucial role in shaping Earth's electron radiation belts and influencing magnetosphere–ionosphere energy coupling. However, its generation mechanism remains contested between cyclic‐linear and localized‐nonlinear models. By analyzing over 64,000 high‐resolution plume hiss wave segments from the Van Allen Probes
Zhiyong Wu +3 more
wiley +1 more source
The Activities at World Data Center for Geomagnetism Mumbai, India
Data Science Journal, 2013 The World Data Centre for Geomagnetism, Mumbai has functioned as a division of the Indian Institute of Geomagnetism, Navi Mumbai since its full fledged activities commenced in 1991 in coordination with the International Council of Scientific Unions (ICSU)
M Doiphode, R Nimje, S Alex
doaj +1 more source
Sydney Chapman: A Biographical Sketch Based on the Book “Chapman Eighty, From His Friends”
Perspectives of Earth and Space Scientists, 2020 This is a brief biographical sketch of Sydney Chapman, who was one of the greatest geophysicists in the world during the 20th century and also a pioneer in space physics.
Syun‐Ichi Akasofu
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Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Understanding the mechanisms linking low‐latitude monsoon variability and high‐latitude ice‐sheet discharge is critical for elucidating past atmospheric teleconnections, yet direct evidence for such linkages during the last glacial period remains limited. Here we present a high‐resolution terrigenous input record from the South China Sea (SCS)
Haosen Wang +6 more
wiley +1 more source
Geophysical Research LettersA series of coronal mass ejections (CMEs) from the Sun, interacted with one another and formed a complex interplanetary‐CME (ICME) that impinged Earth's magnetosphere on 10 May 2024 and caused the strongest geomagnetic storm of the past two decades.
B. Nilam +7 more
doaj +1 more source
Satellite Traces: Ionogram Signatures of Bottom‐Side Upwelling Structures ‐ A Simulation Study
Geophysical Research LettersSatellite Traces (STs) are the important ionogram signatures for the presence of upwellings in the bottom‐side ionosphere, which provide the necessary seed perturbation for the development of equatorial plasma bubbles (EPBs).
M. Ankita +6 more
doaj +1 more source
Increased demand for rapid access to UK magnetic observatory data : implications for quality control procedures [PDF]
, 1999 During the last decade the demand for magnetic observatory data has steadily increased both from the scientific community and in particular from commercial organisations.
Clarke, Ellen, White, Pamela
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