Results 61 to 70 of about 1,500,171 (192)

Why Do Equatorial Plasma Bubbles Bifurcate?

Journal of Geophysical Research: Space Physics, 2020
AbstractIonospheric plasma bubble observations using all‐sky airglow imagers in the OI 630‐nm emission show bifurcations with complex patterns. Bifurcation is the division of one channel of the plasma bubble into two that grow vertically in the magnetic equator. Several theories have been suggested to explain the bifurcation mechanism.
A. J. Carrasco, A. A. Pimenta, C. M. Wrasse, I. S. Batista, H. Takahashi   +4 more
openaire   +2 more sources

Role of E region conductivity in the development of equatorial ionospheric plasma bubbles

, 2004
A transmission line analogy, which has been used earlier in a linear theory for the development of equatorial plasma bubbles, is extended to study the effect of E region conductivity on non-linear evolution of the plasma bubbles.
Bhattacharyya, Archana
core   +1 more source

Simultaneous observations of equatorial plasma bubbles with an all-sky airglow imager and a HF Doppler sounding system in Taiwan

Earth, Planets and Space, 2023
High-Frequency Doppler (HFD) sounders at low-latitudes often detect characteristic oblique spreading Doppler traces in the spectrogram, known as Oblique Spread Structure (OSS).
Hiromi Sejima, Keisuke Hosokawa, Hiroyuki Nakata, Jaroslav Chum, Chien-Hung Lin, Jia-Ting Lin   +5 more
doaj   +1 more source

Long‐Lived Equatorial Plasma Bubbles Persisting Into the Afternoon Over the Pacific Sector During the Recovery Phase of the April 2023 Geomagnetic Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Equatorial plasma bubbles (EPBs) are typically nighttime ionospheric irregularities, and their persistence into daytime sectors remains insufficiently understood. Here, we investigate long‐lived EPB‐related plasma depletion structures over the Pacific sector during the recovery phase of the 23–25 April 2023 geomagnetic storm using Formosa ...
Hailun Ye, Wen Yi, Jianfei Wu, Bingkun Yu, Penghao Tian, Xianghui Xue, Yajun Zhu, Jianyuan Wang, Jianyong Lu, Jian Li, Chong Wang, Tingdi Chen, Xiankang Dou   +12 more
wiley   +1 more source

Generation of large-scale equatorial F-region plasma depletions during lowrange spread-F season [PDF]

Annales Geophysicae, 2004
All-sky imaging observations of the F-region OI 630nm nightglow emission allow us to visualize large-scale equatorial plasma depletions, generally known as trans-equatorial plasma bubbles. Strong range type spread-F is the radio signature of these
Y. Sahai, P. R. Fagundes, J. R. Abalde, A. A. Pimenta, J. A. Bittencourt, Y. Otsuka, V. H. Rios   +6 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Studies of Low Latitude ionospheric phenomena [PDF]

, 2011
Not ...
Banerjee, Swarup B.
core  

Post‐Sunset Merging of Equatorial Ionization Anomaly Crests Into a Single Peak Over ∼35° Longitude During the 19 January 2026 Geomagnetic Superstorm

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract We investigate the nighttime equatorial ionosphere during the 19 January 2026 geomagnetic storm using Global‐scale Observations of the Limb and Disk OI 135.6 nm observations and ground‐based GPS Total Electron Content. The observations reveal a pronounced longitudinal asymmetry in the post‐sunset equatorial ionization anomaly (EIA).
Deepak K. Karan, Richard W. Eastes, Kuldeep Pandey, Wenbin Wang, Carlos R. Martinis, Robert E. Daniell, Quan Gan   +6 more
wiley   +1 more source

A Synoptic‐Scale Wavelike Structure in the Nighttime Equatorial Ionization Anomaly

Earth and Space Science, 2021
Both ground‐ and satellite‐based airglow imaging have significantly contributed to understanding the low‐latitude ionosphere, especially the morphology and dynamics of the equatorial ionization anomaly (EIA).
J. Rodríguez‐Zuluaga, C. Stolle, Y. Yamazaki, C. Xiong, S. L. England   +4 more
doaj   +1 more source

Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD

Earth, Planets and Space, 2023
The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these events is still needed.
Jonas Sousasantos, Josemaria Gomez Socola, Fabiano S. Rodrigues, Richard W. Eastes, Christiano G. M. Brum, Pedrina Terra   +5 more
doaj   +1 more source