Results 61 to 70 of about 2,758 (144)

First Observation of Wild Double‐Flowered Rhododendron nivale With Stamen Petaloidy and Possible Parallel Evolution

Ecology and Evolution, Volume 16, Issue 10, October 2026.
We report the first discovery of wild double‐flowered populations of the alpine dwarf shrub Rhododendron nivale on the eastern Qinghai‐Tibet Plateau. Two geographically isolated populations (> 800 km apart) show nearly identical stamen petaloidy and floral modifications in similar harsh high‐altitude habitats, suggesting possible parallel evolution ...
Xuyan Chen, Shuxing Deng, Zhaoshan Wang
wiley   +1 more source

Direct Radiation Belt Injections and Their Auroral Counterparts

Geophysical Research Letters
We present a case study of a moderate geomagnetic storm, which exhibits an abrupt relativistic enhancement in the heart of the radiation belt accompanied by low‐latitude purple auroral emission.
K. A. Sorathia, M. Shumko, J. Liang, H. Arnold, G. Sinha, V. G. Merkin, A. Sciola, A. Michael, D. Lin, S. Bao, Y. Pan, J. Garretson, D. Turner, A. Y. Ukhorskiy   +13 more
doaj   +1 more source

Phylogenomics Clarifies Plastome Reduction and Phylogenetic Relationships in Monotropoideae

Ecology and Evolution, Volume 16, Issue 10, October 2026.
Phylogenetic Relationships of the Ericaceae Family. ML bootstrap/MP jackknife supported tree from Freudenstein et al. based on (A) nuclear loci, (B) plastid loci, (C) mitochondrial loci, and (D) nuclear+plastid datasets (E). Our combined nuclear + plastid parsimony tree for main groups.
Guocui Deng, Kaili Duan, Niyan Xiang, Feng Gao, Peng Zhan, Rui Shu, Qingsong Lin, Qing Zuo, Tao Yuan   +8 more
wiley   +1 more source

A Machine Learning‐Based Model of Three‐Dimensional Ion Fluxes in the High‐Altitude Earth's Northern Cusp

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Magnetic reconnection at the dayside magnetopause is the primary pathway for transferring mass, momentum, and energy from the solar wind into the terrestrial magnetosphere. Previous studies have shown that the spatiotemporal dynamics of dayside magnetic reconnection can be inferred remotely from properties of Earth's cusps, specifically their ...
Gonzalo Cucho‐Padin, David Sibeck, Xueyi Wang, Daniel da Silva, Xiaolei Li, Gowtan Valluri, Cristian Ferradas, Hyunju Connor, Yu Lin   +8 more
wiley   +1 more source

KITSAT-1 Cosmic Ray Experiment-Initial Results [PDF]

Journal of Astronomy and Space Sciences, 1993
The KITSAT-1 was successfully launched on August 11, 1992, into a near circular, 1300-km-high orbit with an 66 deg inclination. The satellite carries a solid state detector module to measure the high energy particle flux originating mostly from the inner
K. W. Min, S. H. Kim, Y. H. Shin, Y. W. Choi   +3 more
doaj  

Faint Diffuse 557.7‐nm Emissions Equatorward of the Auroral Oval: Conjugate Observations by Ground Airglow Imagers and the Arase Satellite

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract At subauroral latitudes, discrete auroras, such as strong thermal emission velocity enhancement and stable auroral red arcs, have been extensively studied. On the other hand, diffuse emissions at subauroral latitudes have not been studied well.
M. Gomi, K. Shiokawa, Y. Miyoshi, Y. Otsuka, S. Oyama, M. Connors, A. Shinbori, T. Hori, C.‐W. Jun, K. Yamamoto, I. Shinohara, K. Asamura, S. Kasahara, K. Keika, S. Yokota, F. Tsuchiya, A. Kumamoto, Y. Kasahara, S. Matsuda, Y. Kazama, S.‐Y. Wang, S. W. Y. Tam, T.‐F. Chang, B.‐J. Wang, A. Matsuoka, M. Teramoto   +25 more
wiley   +1 more source

Combining Van Allen Probes and CubeSat Observations to Estimate Storm‐Time Maximum Outer Radiation Belt Electron Fluxes

Space Weather
Understanding and forecasting extreme radiation belt electron fluxes has been a major goal in space weather since their discovery in 1958. In this study, by combining electron flux data from multiple satellite missions in different orbits, including Van ...
Man Hua, Jacob Bortnik, Yangyang Shen, Vassilis Angelopoulos, Yang Mei, Xinlin Li, Colin Wilkins   +6 more
doaj   +1 more source

Elastic Properties of Titan Tholins Revealed by Brillouin Spectroscopy

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Titan tholins, complex organic solids synthesized by simulating photochemical processes in Titan's atmosphere, are widely regarded as analogs to organic surface materials on the Saturnian moon. Their mechanical properties are critical for understanding the evolution of Titan's geomorphology and crustal layering.
Mark A. Johnson, Jose R. Montes‐Bojorquez, Adis Husić, Xinting Yu, Wenhao Su, Jia‐Sen Hu, Ryan Blase, Edward Patrick, Alan Whittington, Jin S. Zhang   +9 more
wiley   +1 more source

Chorus Wave‐Induced Ionospheric Variability

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Electron microbursts are short‐lived but intense electron precipitation and constitute a significant source of electron losses into the ionosphere and lower atmosphere. They are primarily produced by wave‐particle interaction with chorus waves in the magnetosphere.
Lunjin Chen, Grant D. Berland, Robert A. Marshall, Jun Liang, Huayue Chen, Zhiyang Xia   +5 more
wiley   +1 more source

Revealing the Formation of the <20 MeV Inner Proton Radiation Belt at L ∼ 2 During the 10–11 May 2024 Superstorm

Geophysical Research Letters
A new proton radiation belt was identified during the geomagnetic superstorm of 10–11 May 2024. To investigate its origin, we use an MHD‐test particle simulation to model solar energetic proton (SEP) trapping and the evolution of the initial trapped ...
Murong Qin, Mary K. Hudson, Miles Engel, Brian T. Kress, Zhao Li, Maulik Patel, Wen Li, Kevin Pham, William R. Johnston, Xinlin Li, Shawn Young   +10 more
doaj   +1 more source