Zobrazeno 1 - 10
of 1 676
pro vyhledávání: '"Ionospheric irregularities"'
Publikováno v:
Solar-Terrestrial Physics, Vol 10, Iss 2, Pp 74-92 (2024)
During experiments on the modification of the high-latitude ionosphere by high-power HF radio waves of ordinary or extraordinary polarization of the EISCAT/Heating facility (Tromsø, Norway) in 2013, 2016, and 2019, Doppler measurements of diagnostic
Externí odkaz:
https://doaj.org/article/213971d755c2488db6c279cdbfff68d6
Publikováno v:
Earth and Space Science, Vol 11, Iss 9, Pp n/a-n/a (2024)
Abstract In this study, the evolutional features and underlying driving mechanisms of the postmidnight‐to‐dawn equatorial plasma bubble (EPB) irregularities during the weak geomagnetic activity period on 13 November 2015 were investigated based o
Externí odkaz:
https://doaj.org/article/513b2c1855ab473aa44449f29529f884
Autor:
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zhaokai Wang, Qingjun Zhang, Bingji Zhao, Heli Gao
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 842-854 (2024)
An L-band geosynchronous synthetic aperture radar (GEO SAR) is susceptible to the ionospheric scintillation induced by ionospheric irregularities due to its lower carrier frequency. In particular, the drifting characteristic of the ionospheric irregu
Externí odkaz:
https://doaj.org/article/59439480512d4212bc8c86a3272edb29
Publikováno v:
Atmosphere, Vol 15, Iss 9, p 1065 (2024)
In this study, we present the first results of detecting ionospheric irregularities using non-typical GPS observations recorded onboard the Geostationary Operational Environmental Satellites (GOES) mission operating at ~35,800 km altitude. Sitting ab
Externí odkaz:
https://doaj.org/article/f48967f49f1d4854ab88b1d823bd7598
Publikováno v:
Atmosphere, Vol 15, Iss 9, p 1098 (2024)
In this paper, we investigate and propose the application of an unsupervised machine learning clustering method to characterize the spatial and temporal distribution of ionospheric plasma irregularities over the Western African equatorial region. The
Externí odkaz:
https://doaj.org/article/ab6ce17e88e74dad9e416bc95300052a
Publikováno v:
Remote Sensing, Vol 16, Iss 15, p 2757 (2024)
This study investigates the relationship between geomagnetic activities and ionospheric scintillations, focusing on how solar and geomagnetic parameters influence ionospheric disturbances across varying time frames and latitudes. Utilizing indices su
Externí odkaz:
https://doaj.org/article/2346fa8fb04b47ceba0540ae322d75f7
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
The low latitude ionosphere and thermosphere are strongly disturbed during and shortly after geomagnetic storms. We use novel Jicamarca radar measurements, ACE satellite solar wind, and SuperMAG geomagnetic field observations to study the electrodyna
Externí odkaz:
https://doaj.org/article/f507e8f64913467c980956c247175d48
Autor:
Afnan Tahir, Falin Wu, Munawar Shah, Christine Amory-Mazaudier, Punyawi Jamjareegulgarn, Tobias G. W. Verhulst, Muhammad Ayyaz Ameen
Publikováno v:
Remote Sensing, Vol 16, Iss 9, p 1594 (2024)
This work investigates the ionospheric response to the March 2023 geomagnetic storm over American and Asian sectors from total electron content (TEC), rate of TEC index, ionospheric heights, Swarm plasma density, radio occultation profiles of Formosa
Externí odkaz:
https://doaj.org/article/024dbd330ba24ca2a7fa2cdc9c531219
Akademický článek
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Autor:
Ojochenemi Ikani, Francisca Nneka Okeke, Kingsley Chukwudi Okpala, Daniel Okoh, Babatunde Rabiu
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
We investigate the occurrence of ionospheric irregularities in Nigeria during 2014, using the Global Navigation Satellite System (GNSS) total electron content (TEC) rate of change index (ROTI). We categorized days with |Dst| < 30 nT as quiet days and
Externí odkaz:
https://doaj.org/article/474d218adf494aaa8b4461209b517d8c