Post-sunset rise of equatorial F layer—or upwelling growth?

RT Tsunoda, S Saito, TT Nguyen - Progress in Earth and Planetary …, 2018 - Springer
According to the so-called upwelling paradigm, development of equatorial plasma bubbles
(EPBs) involves (1) appearance of an upwelling (ie, local uplift with a zonal width of~ 400 …

Upwelling: a unit of disturbance in equatorial spread F

RT Tsunoda - Progress in Earth and Planetary Science, 2015 - Springer
Plasma structure in the nighttime equatorial F layer, often referred to as equatorial spread F
(ESF), is not uniformly distributed, either in time or in space. Observations indicate that ESF …

Development of low latitude long range ionospheric radar for observing plasma bubble irregularities and preliminary results

L Hu, G Li, B Ning, W Sun, H Xie, X Zhao… - Journal of …, 2024 - Wiley Online Library
Abstract The Low lAtitude long Range Ionospheric raDar (LARID), which consists of two high
frequency (HF) radars looking toward the east and west of Hainan Island, respectively, has …

Characteristics of large‐scale wave structure observed from African and Southeast Asian longitudinal sectors

S Tulasi Ram, M Yamamoto… - Journal of …, 2014 - Wiley Online Library
The spatial large‐scale wave structure (LSWS) at the base of F layer is the earliest
manifestation of seed perturbation for Rayleigh‐Taylor instability, hence, found to play a …

Observations of Equatorial Spread F A Working Hypothesis

RT Tsunoda - Ionosphere Dynamics and Applications, 2021 - Wiley Online Library
A fundamental goal of researchers has been to attain a comprehensive grasp of how plasma
structure develops in the nighttime equatorial F layer. Understanding of this phenomenon …

A statistical study of satellite traces and evolution of equatorial spread F

VL Narayanan, S Sau, S Gurubaran, K Shiokawa… - Earth, Planets and …, 2014 - Springer
The ionosonde observations made at 5-min intervals at the Indian dip equatorial station
Tirunelveli (8.7° N, 77.8° E geographic; 1.1° N dip latitude) from March 2008 to February …

Uncovering the drivers of responsive ionospheric dynamics to severe space weather conditions: A coordinated multi‐instrumental approach

A Calabia, N Imtiaz, D Altadill… - Journal of …, 2024 - Wiley Online Library
Abstract Space‐weather conditions can often have a detrimental impact on satellite
communications and limited experimental data has made it challenging to understand the …

Effects of tidal forcing, conductivity gradient, and active seeding on the climatology of equatorial spread F over Kwajalein

RT Tsunoda, TT Nguyen, MH Le - Journal of Geophysical …, 2015 - Wiley Online Library
Plasma structure in nighttime equatorial F layer, referred to as equatorial spread F (ESF),
displays climatology whose seasonal variation depends on longitude. At longitudes where …

Onset conditions and features of equatorial F region irregularities: New insight from collocated digisonde and radar observations from Gadanki

SK Das, G Janardana Reddy, AK Patra… - Journal of …, 2022 - Wiley Online Library
In this paper, we study the onset conditions and features of equatorial F region irregularities
linked with equatorial plasma bubbles (EPBs) using observations made simultaneously by …

Interaction between an EMSTID and an EPB in the EIA crest region over China

L Sun, J Xu, Y Zhu, C Xiong, W Yuan… - Journal of …, 2021 - Wiley Online Library
Few observations investigated the interaction between an electrical medium‐scale traveling
ionospheric disturbance (EMSTID) and an equatorial plasma bubble (EPB). This paper …