Results 61 to 70 of about 348 (165)

Nighttime Midlatitude E‐F Coupling in Geomagnetic Conjugate Ionospheres: A Double Thin Shell Model and a Multi‐Source Data Investigation [PDF]

, 2023
Geomagnetic conjugate mid-latitude nighttime ionospheres are frequently simultaneously populated with electrified nighttime medium-scale traveling ionospheric disturbances (MSTIDs).
Tatsuhiro Yokoyama, Ssessanga, Nicholas, Yokoyama, Tatsuhiro, Ma, Guanyi, Guanyi Ma, Weizheng Fu, Nicholas Ssessanga, Mamoru Yamamoto, Fu, Weizheng, Yamamoto, Mamoru   +9 more
core   +1 more source

Investigation into the earliest generation of medium-scale traveling ionospheric disturbances with electrodynamic signatures using dense GNSS observations over Japan

Earth, Planets and Space
Understanding the earliest formation stages of medium-scale traveling ionospheric disturbances (MSTIDs) with electrodynamic signatures (commonly referred to as nighttime MSTIDs) is essential for comprehending their full development.
Weizheng Fu, Yuichi Otsuka, Tatsuhiro Yokoyama, Zezhong Li, Mamoru Yamamoto, Michi Nishioka, Hidekatsu Jin, Keisuke Hosokawa, Claudia Stolle   +8 more
doaj   +1 more source

Periodic waves in the lower thermosphere observed by OI630 nm airglow images [PDF]

Annales Geophysicae, 2016
Periodic wave structures in the thermosphere have been observed at São João do Cariri (geographic coordinates: 36.5° W, 7.4° S; geomagnetic coordinates based on IGRF model to 2015: 35.8° E, 0.48° N) from September 2000 to November 2010 using OI630.0 ...
I. Paulino, A. F. Medeiros, S. L. Vadas, C. M. Wrasse, H. Takahashi, R. A. Buriti, D. Leite, S. Filgueira, J. V. Bageston, J. H. A. Sobral, D. Gobbi   +10 more
doaj   +1 more source

Climatology of Medium‐Scale Traveling Ionospheric Disturbances Over Continental US Using GNSS TEC From 2012 to 2023

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu, Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Hanli Liu   +4 more
wiley   +1 more source

Assessment of the Generation of Traveling Ionospheric Disturbances by Solar Terminators

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The generation of traveling ionospheric disturbances (TIDs) near solar terminators has been predicted, and several studies have reported the detection of TIDs associated with sunrise. However, there are also observations that do not show TID signatures at sunrise.
Hyosub Kil, Andrew K. Sun, Se‐Heon Jeong, Woo Kyoung Lee, Jeong‐Heon Kim, Jiyun Lee   +5 more
wiley   +1 more source

Multi-TID detection and characterization in a dense Global Navigation Satellite System receiver network [PDF]

, 2017
The medium-scale traveling ionospheric disturbances (MSTIDs) constitute the most frequent ionospheric wave signatures. We propose a method for detecting the number of simultaneous MSTIDs from a time series of high-pass-filtered Vertical Total Electron ...
Monte Moreno, Enrique, Enrique Monte-Moreno, Yang, Heng, Heng Yang, Manuel Hernández-Pajares, Hernández Pajares, Manuel   +5 more
core   +1 more source

Untersuchung regionaler Störungen in der Ionosphäre über Afrika (IRIA)

, 2021
The Earth’s upper atmosphere – a part of it, the ionosphere- is a dynamic partly ionized region with temporal and spatial variations under different phases of solar activity.
Seun, Oluwadare Temitope
core   +1 more source

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning. This study develops a regional medium‐scale TID (MSTID) propagation model using BeiDou geostationary orbit (GEO) total ...
Dengkui Mei, Xiaohong Zhang, Xiaodong Ren, Xuan Le, Wentao Yang, Ahmed Abdelaziz   +5 more
wiley   +1 more source

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

Space Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li, Donghe Zhang, Yaoyu Tian, Yi Zeng, Guanglin Yang, Xiukuan Zhao, Guozhu Li, Yongqiang Hao   +7 more
wiley   +1 more source

Evidence and Causes of an Unusual Super Plasma Bubble Occurrence During Weak Geomagnetic Conditions Over Europe

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Using data from a cluster of ground‐based global navigation satellite system, we observed spatially extended enhanced ROTI over the European longitudes during a weak geomagnetic storm (Dst ≈ ${\approx} $ −50 nT) on 4 November 2023. The enhanced ROTI is extended over an extensive geographical latitudinal range of 46°N.
Chandan Kapil, Mani Sivakandan, Jorge Chau, Gopi K. Seemala, David Altadill   +4 more
wiley   +1 more source