Results 61 to 70 of about 19,448,839 (267)

B-Lspace and geomagnetic field models [PDF]

Journal of Geophysical Research, 1968
Geomagnetic field models compared in magnetic field strength-earth distance coordinates /B-L space/, noting geomagnetically trapped radiation flux ...
Lindstrom, Peter J., Heckman, Harry H.
openaire   +2 more sources

Kalmag: a high spatio-temporal model of the geomagnetic field

Earth, Planets and Space, 2022
Abstract We present the extension of the Kalmag model, proposed as a candidate for IGRF-13, to the twentieth century. The dataset serving its derivation has been complemented by new measurements coming from satellites, ground-based observatories and land, marine and airborne surveys.
Julien Baerenzung, Matthias Holschneider, Jan Saynisch-Wagner, Maik Thomas   +3 more
openaire   +4 more sources

Sudden commencement event of 17 April 2002: Aspects of the geomagnetic response at low latitudes [PDF]

, 2005
An analysis of a sudden commencement (SC) manifestation reveals a significant contribution of the polar current system which influences the long-term behavior of the H component at low-latitude ground stations located in the subsolar sector. A transition
Zhang, T.L., P. Di Giuseppe, M. Piersanti, M. Vellante, Villante, U., T. L. Zhang, Di Giuseppe, P., W. Magnes, Vellante, M., Magnes, W., Villante U., Piersanti, M.   +11 more
core   +1 more source

Cretaceous–Palaeogene Plate Boundary Evolution at the Pacific Margins of Zealandia and West Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Improved satellite‐derived gravity data support updated interpretations and models of ancient plate boundaries and plate motions affecting Zealandia and West Antarctica. The models combine to confidently resolve hundreds of kilometres of Late Cretaceous–Eocene motion between the Pacific and Lord Howe plates, confirming that plate circuit constructions ...
Graeme Eagles
wiley   +1 more source

Oscillating magnetic field disrupts magnetic orientation in Zebra finches, Taeniopygia guttata [PDF]

, 2009
Background Zebra finches can be trained to use the geomagnetic field as a directional cue for short distance orientation. The physical mechanisms underlying the primary processes of magnetoreception are, however, largely unknown.
Wiltschko, Wolfgang, Voss Joe, Tim Ruploh, Ruploh, Tim, Nina Keary, Wolfgang Wiltschko, Keary, Nina, Thalau, Peter, Wiltschko, Roswitha, Ruploh Tim, Voss, Joe, Wiltschko, Wolfgang (Prof. Dr.), Joe Voss, Roswitha Wiltschko, Peter Thalau, Wiltschko Roswitha, Bischof Hans-Joachim, Thalau Peter, Wiltschko Wolfgang, Keary Nina, Hans-Joachim Bischof, Bischof, Hans-Joachim   +21 more
core   +1 more source

White light reduces flight height of birds in low‐density migration corridor

The Journal of Wildlife Management, Volume 90, Issue 8, November 2026.
We conducted an experiment to better understand the effects of artificial light at night treatments of varying spectral power distributions on in‐flight migratory bird behavior as measured by a portable radar. Broad‐spectrum white light emissions reduced avian flight height as compared to dark periods and more than other light treatments.
Miguel F. Jimenez, Carrie Ann Adams, Carolyn S. Burt, Brian D. Gerber, Jeremy White, Riana Zinn, Kyle G. Horton   +6 more
wiley   +1 more source

Quantifying Nighttime Gravity Wave‐Driven Mesosphere‐Ionosphere Coupling Over CONUS Using NASA AWE Radiance and GNSS TEC Observations

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract We present the first coordinated study of nighttime mesosphere‐ionosphere coupling over the continental United States (CONUS) from January through November 2024 using NASA Atmospheric Waves Experiment (AWE) airglow measurements near 87 km and GNSS Total Electron Content observations near 300 km.
Sreelekshmi Radhakrishnan Girijakumary, Xian Lu   +1 more
wiley   +1 more source

Scaling and a Fokker-Planck model for fluctuations in geomagnetic indices and comparison with solar wind as seen by Wind and ACE [PDF]

, 2005
The evolution of magnetospheric indices on temporal scales shorter than that of substorms is characterized by bursty, intermittent events that may arise from turbulence intrinsic to the magnetosphere or that may reflect solar wind-magnetosphere coupling.
Hnat, B., Rowlands, G. (George), Chapman, Sandra C.   +2 more
core   +1 more source

Position of the Lhasa Terrane and Two‐Stage Crustal Shortening During the India–Asia Collision

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The paleolatitudinal change of the Lhasa Terrane is critical for estimating the timing of the India–Asia collision and associated syn‐to post‐collisional crustal shortening, but its paleoposition is highly debated. Here we present integrated geochronologic and paleomagnetic results from the Lower Eocene Nianbo Formation in the Linzhou Basin ...
Zhenhua Jia, Pan Zhao, Yifei Hou, Yue Liu, Siyuan Li, Jiahui Ma, Chenglong Deng   +6 more
wiley   +1 more source

Stochastic forecasting of the geomagnetic field from the COV-OBS.x1 geomagnetic field model, and candidate models for IGRF-12 [PDF]

Earth, Planets and Space, 2015
We present the geomagnetic field model COV-OBS.x1, covering 1840 to 2020, from which have been derived candidate models for the IGRF-12. Towards the most recent epochs, it is primarily constrained by first differences of observatory annual means and measurements from the Oersted, Champ, and Swarm satellite missions.
Gillet, Nicolas, Barrois, Olivier, Finlay, Chris; id_orcid 0000-0002-4592-2290   +2 more
openaire   +2 more sources