Results 41 to 50 of about 243,128 (206)
Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.Abstract The upper thermosphere is important in the context of space weather, but continuous monitoring of the thermosphere at high latitudes remains limited despite its strong variations associated with geomagnetic activity. Orthohelium, He(23S), is found from the upper thermosphere to lower exosphere, and is a promising tracer of atmospheric dynamics.
Takanori Nishiyama +6 more
wiley +1 more source
A low-power data acquisition system for geomagnetic observatories and variometer stations [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2017 A modern geomagnetic observatory must provide data of high stability, continuity, and resolution. The INTERMAGNET network has therefore specified quantitative criteria to ensure a high quality standard of geomagnetic observatories.
A. Morschhauser +4 more
doaj +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.Abstract The Geomagnetic Polarity Time Scale (GPTS) is essential to date geological events in stratigraphic sequences and to reconstruct plate motions. The first GPTSs were based on the record of magnetic anomalies created by seafloor spreading, calibrated by a few radioisotopic dates.
A. Malinverno, S. R. Meyers
wiley +1 more source
On closing geomagnetic observatories
Eos, Transactions American Geophysical Union, 1986 The contemplated closing by the U.S. Geological Survey (USGS) of the geomagnetic observatories at Barrow, Alaska, and Newport, Wash. (Eos, February 25, 1986, p. 95) is a situation that could have very serious implications for the solar‐terrestrial research community as well as for the geological community.This intent to close should be investigated ...
openaire +1 more source
, 2012 The geomagnetic Observatory of L'Aquila was founded by Istituto Nazionale di Geofisica e Vulcanologia (INGV) in 1958, on the occasion of the International Geophysical Year.
Palangio, P. +6 more
core +1 more source
Geomagnetic ground survey in Slovakia for the 2007.5 epoch
Contributions to Geophysics and Geodesy, 2009 New geomagnetic ground survey was carried out in years 2006–2008. The survey was accomplished under fair geomagnetic-activity conditions during the minimum phase of a solar activity cycle No. 23. The measurements of the geomagnetic field
Peter DOLINSKÝ +3 more
doaj
Space Weather, Volume 24, Issue 10, October 2026.Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun +11 more
wiley +1 more source
, 1932 This data publication includes the half-hourly Hp30 and ap30 indices as well as the hourly Hp60 and ap60 indices, collectively denoted as Hpo. This dataset is based on near real-time geomagnetic observatory data provided by 13 contributing observatories.
Bronkalla, Oliver +6 more
core +1 more source
Scaling and singularity characteristics of solar wind and magnetospheric fluctuations [PDF]
, 2002 Preliminary results are presented which suggest that scaling and singularity characteristics of solar wind and ground-based magnetic fluctuations appear to be a significant component in the solar wind-magnetosphere interaction processes.
D. Jankovičová +5 more
core +2 more sources
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
doaj +1 more source