Results 101 to 110 of about 21,118 (299)

A regional geomagnetic field model over Southern Africa derived with harmonic splines from Swarm satellite and ground-based data recorded between 2014 and 2019 [PDF]

, 2022
Emmanuel Nahayo, Monika Korte
openalex   +1 more source

Second‐Scale Formation of Non‐Field‐Aligned Plasma Irregularities Observed From a High‐Altitude 43‐Cassiopeiids Fireball

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract High‐altitude optical meteors initiating above 150 km are exceedingly rare, with confirmed observations largely confined to the Leonids. Using the Meteor and ionospheric Irregularity Observation System, we recorded a bright 43‐Cassiopeiids fireball with heterogeneous material. It initiated luminously at an exceptional altitude of 157.8 ± $\pm $
Yi Li, Guozhu Li, Zhi Wu, Wenzhi Chen, Zhaoguo Huang, Lianhuan Hu, Xiukuan Zhao, Wenjie Sun, Haiyong Xie, Guofeng Dai, Jianfei Liu, Baiqi Ning, Shoumin Chang   +12 more
wiley   +1 more source

Unique Observations of a Geomagnetic SI^+ -- SI^- Pair: Solar Sources and Associated Solar Wind Fluctuations

, 2010
The paper describes the occurrence of a pair of oppositely directed sudden impulses (SI), in the geomagnetic field ($\Delta$X), at ground stations, called SI${^{+}}$ -- SI${^{-}}$ pairs, that occurred between 1835 UT and 2300 UT on 23 April 1998. The SI${
A. C. Das, Bastian, Burlaga, Delaboudinière, Detman, Domingo, Dryer, Dryer, Dryer, Dungey, Eviatar, Fry, Gold, Goldstein, Goodrich, Gopalswamy, Heppner, Janardhan, Janardhan, Janardhan, Janardhan, Janardhan, K. Ahmed, Lazarus, Lu, McKenna-Lawlor, Mercier, Nishida, Odstrcil, P. Janardhan, R. G. Rastogi, Rastogi, Razdan, Rickett, Scherrer, Schrijver, Schwenn, Senior, Shen, Simnett, Simnett, Smart, Smith, Smith, Sonett, Sonett, Spiro, Stone, Susanta K. Bisoi, Takeuchi, Tóth, Vandegriff, Vasyliunas, Wolf   +53 more
core   +1 more source

Nitric Oxide Radiative Relaxation Time: Damping Timescales of Lower Thermospheric Thermal Perturbations

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Nitric oxide (NO) radiative cooling governs much of the energy budget in the Earth's lower thermosphere and damps out temperature perturbations. The radiative relaxation time (RRT), the timescale that defines how efficiently infrared radiation damps out the perturbations to the thermal structure to 1/e of the perturbation's initial value, is ...
Ningchao Wang, Martin G. Mlynczak, John T. Emmert, Manuel López‐Puertas, Bernd Funke   +4 more
wiley   +1 more source

Electric Field Coupling in the Ionosphere-Magnetosphere System (b. Electric Fields and Current System) (Proceeding of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I)

Antarctic Record, 1980
Because of the high electrical conductivity along geomagnetic field lines, the ionosphere and the magnetosphere are closely couoled. After an introductory presentation of some evidence of this coupling, the method for mathematical modeling of the ...
Hiroshi MAEDA
doaj   +1 more source

Temporal Change in Resistivity Structure Before and After the 2018 Small Phreatic Eruption Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract A small phreatic eruption occurred on April 2018 Iwo‐yama, Kirishima volcanic complex, Japan. We estimated the change in the subsurface resistivity structure before and after the phreatic eruption by repeated magnetotelluric (MT) measurements. A substantial decrease in resistivity was determined in the zone from the surface down to a depth of ...
K. Aizawa, N. Matsushima, Y. Matsunaga
wiley   +1 more source

Magnetic Signature of Oceanic Transform Faults and Their Fracture Zones

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Oceanic transform faults (TFs) offset mid‐ocean ridges, juxtaposing different‐aged crust and causing fracture zones (FZ) crossing ocean basins. Mounting evidence challenges the consensus that TFs are conservative plate boundaries, instead supporting the existence of extensional tectonics and two phases of magmatism.
Fei Zhou, Ingo Grevemeyer, Jérôme Dyment, Lars H. Ruepke, Christian Hübscher   +4 more
wiley   +1 more source

Acquisition of Self‐Reversed Magnetization in Greigite Driven by Antiparallel Vortex‐Core Coupling During Low‐Temperature Oxidation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Self‐reversed magnetization, acquired antiparallel to the external field, can complicate the interpretation of paleomagnetic directional records, particularly in altered greigite‐bearing sediments with anomalous magnetizations. The underlying physical process for this self‐reversal remains poorly constrained.
Shichu Chen, Liao Chang, Wyn Williams
wiley   +1 more source

Status and Prospect of Secondary Battery Technologies in Space Applications: Challenges and the Future

Batteries &Supercaps, Volume 9, Issue 5, May 2026.
Lithium‐ion batteries used in space applications are exposed to extreme conditions, including radiation, vacuum, wide temperature fluctuations, and long storage times, all of which accelerate degradation. This review article summarizes the main degradation mechanisms affecting battery performance in space environments, including capacity fade ...
Xunkai Chen, Kelsey B. Hatzell
wiley   +1 more source

Cryptic Paleomagnetic Complexity in the Ediacaran Egersund Dikes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract The Ediacaran Period (∼635–539 Ma) represents a critical interval in Earth's evolution, yet its paleomagnetic record remains complex and contentious. One of the few Ediacaran paleomagnetic results from Baltica considered robust is a pole from the ca.
Yi Xue, Mathew Domeier, Petter Silkoset, Leandro C. Gallo, Justin A. D. Tonti‐Filippini, Harald J. Walderhaug   +5 more
wiley   +1 more source