Results 71 to 80 of about 5,592 (185)

Another view on IGRF commercialization

Eos, Transactions American Geophysical Union, 1991
The purpose of this article is to add to Patrick Taylor's arguments against commercialization of the International Geomagnetic Reference Field (IGRF) (Eos, April 16, 1991), and to examine the long‐term future of the global network of magnetic observatories.
openaire   +1 more source

Modulation of the Mid‐Latitude Ionospheric Sporadic E Layer by the Northern Polar Vortex

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The sporadic E (Es) layer is a prominent ionospheric irregularity mainly driven by vertical wind shear at mid‐latitudes. Hereby we statistically investigate for the first time Es responses to variations of the northern polar vortex (represented by NAM index) using long‐term ionosonde observations over Japan (44 years) and Australia (34 years).
Tomoki Maeda, Huixin Liu, Yosuke Yamazaki, Lihui Qiu   +3 more
wiley   +1 more source

Global Mapping of Near-Earth Magnetic Fields Measured by KITSAT-1 and KITSAT-2 [PDF]

Journal of Astronomy and Space Sciences, 1994
The magnetic field measurements from the KitSat-1 and KitSat-2 were tested by comparing with the IGRF model. The magnetic data have been collected by a three-axis fluxgate magnetometer on each satellite at an altitude of 1,325km and 820km, respectively ...
Yoo-Surn Pyo, Dong-Hun Lee, Kyoung-Wook Min   +2 more
doaj  

IGRF commercialization defeated, planetary studies probed by IAGA

Eos, Transactions American Geophysical Union, 1991
Sessions of the International Association of Geomagnetism and Aeronomy (IAGA) at the XX International Union of Geodesy and Geophysics meeting in Vienna, Austria (August 11–24), lasted for nearly the full 2 weeks of the conference. Once again, the program offered a vast array of scientific topics ranging from the outer limits of the heliosphere to ...
Christopher Harrison, D. J. Williams, Peggy Shea   +2 more
openaire   +1 more source

Cosmic ray cutoff prediction using magnetic field from global magnetosphere MHD simulations [PDF]

Annales Geophysicae, 2005
Relativistic particles entering the Earth's magnetosphere, i.e. cosmic rays and solar energetic particles, are of prime space weather interest because they can affect satellite operations, communications, and the safety of astronauts and airline ...
J. M. Weygand, J. Raeder
doaj   +1 more source

The International Geomagnetic Reference Field (IGRF) generation 12: BGS candidates and final models [PDF]

, 2015
The International Geomagnetic Reference Field (IGRF) model is a reference main field magnetic model updated on a quinquennial basis. The latest revision (generation 12) was released in January 2015.
Beggan, Ciaran D., Hamilton, Brian, Macmillan, Susan, Taylor, Victoria, Thomson, Alan   +4 more
core  

Australian Cosmic Ray Modulation Research [PDF]

, 2000
Australian research into variations of the cosmic ray flux arriving at the Earth has played a pivotal role for more than 50 years. The work has been largely led by the groups from the University of Tasmania and the Australian Antarctic Division and has ...
Ahluwalia, Ahluwalia, Ahluwalia, Ahluwalia, Ahluwalia, Berkovitch, Bieber, Bieber, Bieber, Burlaga, Carmichael, Caro, Cliver, Cramp, Cramp, Cramp, Cramp, Duggal, Duggal, Duldig, Duldig, Duldig, Elliot, Erdös, Fenton, Fenton, Fenton, Fenton, Fenton, Forman, Forman, Fujimoto, Fujimoto, Hall, Hall, Hall, Hatton, Humble, Humble, Humble, Jacklyn, Jacklyn, Jacklyn, Jacklyn, Jacklyn, Johnson, Kota, Law, M. L. Duldig, Mathews, McCracken, McCracken, McCracken, Moraal, Mori, Mori, Munakata, Nagashima, Nagashima, Nagashima, Nagashima, Parker, Pyle, Russell, Sakakibara, Shea, Shea, Smart, Swinson, Torsti, Tsyganenko, Tsyganenko, Yasue, Yasue   +73 more
core   +3 more sources

New Cretaceous Paleomagnetic and Geochronologic Data From the Antarctic Peninsula: Constraints on the Pre‐Opening Tectonic Evolution of the Drake Passage

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Reconstructing oroclinal orogens along the Fuegian Andes‐northern Antarctic Peninsula provides critical constraints on the pre‐opening tectonic evolution of the Drake Passage, although such efforts are limited by a lack of reliable Cretaceous paleomagnetic and geochronological data.
Liang Gao, Xinwei Hu, Mengwei Zhang, Xiaoqian Guo, Junling Pei, Zhenyu Yang, Yue Zhao   +6 more
wiley   +1 more source

A satellite study of dayside auroral conjugacy [PDF]

Annales Geophysicae, 1995
A study of dayside auroral conjugacy has been done using the cleft/boundary layer auroral particle boundaries observed by the DMSP-F7 satellite in the southern hemisphere and the global UV auroral images taken by the Viking spacecraft in the northern ...
H. B. Vo, J. S. Murphree, D. Hearn, P. T. Newell, C.-I. Meng   +4 more
doaj   +1 more source

Uncovering the Generation Mechanism of Low‐Frequency Chorus Waves (<0.1 fce_eq ${\boldsymbol{f}}_{\mathbf{c}\mathbf{e}\mathbf{\_}\mathbf{e}\mathbf{q}}$) During Active Geomagnetic Environments

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Low‐frequency chorus waves (below 0.1 fce_eq ${f}_{\text{ce}\_\text{eq}}$, where fce_eq ${f}_{\text{ce}\_\text{eq}}$ is equatorial electron gyrofrequency) can induce the depletion of relativistic electrons in Earth's radiation belts by effective pitch angle scattering, demonstrating distinct effects on radiation belt dynamics compared to ...
Xuan Zhou, Xinliang Gao, Dedong Wang, Jiuqi Ma, Quanming Lu   +4 more
wiley   +1 more source