Results 171 to 180 of about 21,226 (301)

First Observation of Sawtooth‐Like Undulations in Afternoon Detached Auroral Arcs Modulated by Surface Waves at the Plasmaspheric Plume Boundary

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract The afternoon detached auroral arc is an important phenomenon in the subauroral region, reflecting coupling processes between the Earth's magnetosphere and ionosphere. Previous studies have not identified fine‐scale structures in such arcs, leaving the dynamics underlying their formation poorly understood.
Huiting Feng, Dedong Wang, Yixin Hao, Yoshizumi Miyoshi, Haobo Fu, Chae‐Woo Jun, Yuzhang Ma, Yongliang Zhang, Kazushi Asamura, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Iku Shinohara, Kazuo Shiokawa, Yuri. Y. Shprits   +19 more
wiley   +1 more source

Some possible evidence for a chaotic geomagnetic field from observational data

, 1997
The behaviour of the geomagnetic field as observed almost continuously at three European locations over the last 130 years is investigated by means of a non-linear forecasting approach.
Barraclogh, D. R., De Santis, A.
core   +1 more source

Contemporaneous Appearances of Auroral Spiral and Transpolar Arc: Polar UVI Observations and Global MHD Simulations

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract A local vortex‐structured aurora and a large‐scale transpolar arc (TPA) were contemporaneously observed by the Polar ultraviolet imager (UVI) during the late recovery phase of a substorm, and the interplanetary magnetic field (IMF) BY and BZ were negative and negative‐to‐positive. The TPA grew along the dawnside auroral oval from the nightside
Motoharu Nowada, Yukinaga Miyashita, Aoi Nakamizo, Noora Partamies, Quan‐Qi Shi   +4 more
wiley   +1 more source

The Importance of Sample‐to‐Sensor Distance in Quantitative Micro(Paleo‐)Magnetic Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Information on the past of Earth's magnetic field can be retrieved from magnetic grains in rock samples. Micromagnetic Tomography (MMT) is a recently developed method that uses magnetic surface scans from a Quantum Diamond Microscope (QDM) combined with the position of magnetic grains in rock samples to calculate the magnetic moments of those ...
Rosa A. de Boer, Frenk Out, Bertwin M. de Groot, Martha E. Kosters, Lennart V. de Groot   +4 more
wiley   +1 more source

A study of Geomagnetic Field and It's secular variation at the Location Brazilian Anomaly (25°S, 45°W).

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
ln this paper we study  and  analysis  the  total intensity  (P) .and the horizontal  component (H) of the geomagnetic field at the location na ly Brazilian    Anomaly  (Lat   25S,    long   4S·"W)    in  which   the geomagnetic field intensity  has a ...
H.A. AI-Mahdi, A.F. Mokheber
doaj  

Multidisciplinary Investigation of Healy Submarine Volcano (Kermadec Arc, New Zealand) Using AUV and Submersible Data: Structural Control on Magmatic and Hydrothermal Processes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract We present a comprehensive multidisciplinary investigation of the Healy submarine volcano in the southern Kermadec arc, northeast of New Zealand. We show the first results of sidescan‐sonar data collected at a submarine arc volcano by an Autonomous Underwater Vehicle (AUV).
A. Bagnasco, F. Caratori Tontini, C. E. J. de Ronde, S. L. Walker, L. Cocchi, A. Ghirotto, E. Armadillo   +6 more
wiley   +1 more source

The arrangement of anisotropic spin couplings can optimize sensitivity of the cryptochrome radical pair to the direction of geomagnetic field. [PDF]

Sci Rep
Bezchastnov V, Domratcheva T.
europepmc   +1 more source

Low frequency geomagnetic field variations at Dome C (Antarctica)

, 2003
We conduct an analysis of the geomagnetic field variations recorded at the new Antarctic station Dome C, located very close to the geomagnetic pole, which has been operating for approximately one month during the 1999–2000 campaign.
Palangio, P., Lepidi, S., Francia, P., Schott, J. J., Meloni, A., Cafarella, L.   +5 more
core  

Iterative and Steady Black Auroral Stripes and Their Possible Causality in Plasma‐Sheet Electron Distributions: Implications From Low‐Altitude Reimei Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Iterative black auroral stripes were identified in auroral images obtained by the low‐altitude microsatellite Reimei. These steady and narrow black stripes are a remarkable feature of diffuse auroras generated by energetic electrons precipitating at higher latitudes than pulsating auroras.
Masafumi Hirahara, Yusuke Ebihara, Mizuki Fukizawa, Takanori Nishiyama, Takeshi Sakanoi   +4 more
wiley   +1 more source

Geophysical insights from the first geomagnetic field absolute intensity curve for central Asia (2200BCE-2000CE), and implications for archaeomagnetic dating. [PDF]

Sci Rep
Bonilla-Alba R, Gómez-Paccard M, Pavón-Carrasco FJ, Chauvin A, Beamud E, Martínez-Ferreras V, Gurt-Esparraguera JM, Luneau E, Osete ML.   +8 more
europepmc   +1 more source