Results 151 to 160 of about 474,530 (188)

Evolution of Pliocene-Pleistocene tropical terrestrial Andean temperature amplification. [PDF]

Proc Natl Acad Sci U S A
Pérez-Angel LC, Sepúlveda J, Molnar P, Mora-Paez H, Parrado A, Eaman K, Russell J, Rajagopalan B, González-Arango C, Snell K, Montes C, Crowley JL, Schmitz M, Trayler RB.   +13 more
europepmc   +1 more source

GNSS-VTEC prediction based on CNN-GRU neural network model during high solar activities. [PDF]

Sci Rep
Yang TY, Lu JY, Yang YY, Hao YH, Wang M, Li JY, Wei GC.   +6 more
europepmc   +1 more source

Fatty Acid Profile of Table Grapes: Impact of Cultivar and Fruit Protection on Saturated, Monounsaturated, and Polyunsaturated Fatty Acid Profile. [PDF]

Foods
Coronel Montesdeoca NT, Andreu-Coll L, Jácome Sarchi GA, Hernández F, Sendra E.   +4 more
europepmc   +1 more source

User-Side Long-Baseline Undifferenced Network RTK Positioning Under Geomagnetic Storm Conditions Using a Power Spectral Density-Constrained Ionospheric Delay Model. [PDF]

Sensors (Basel)
Wang Y, Zhu H, Xu Q, Li J, Song C, Li B.
europepmc   +1 more source

Quiet Time Ionopheric Irregularities Over the African Equatorial Ionization Anomaly Region [PDF]

Radio Science, 2020
AbstractThis paper investigated variations of quiet time ionospheric irregularities over the African equatorial ionization anomaly using the rate of change of total electron content index. Irregularities were quantified in terms of percentage occurrence and examined along with parameter of the anomaly, mainly its strength and the asymmetry of the ...
Zouhair Benkhaldoun, Elijah O. Oyeyemi, Christine Amory-Mazaudier   +2 more
exaly   +5 more sources

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Effect of geomagnetic storm conditions on the equatorial ionization anomaly and equatorial temperature anomaly

Journal of Atmospheric and Solar-Terrestrial Physics, 2018
Abstract The effect of the geomagnetic storm on the equatorial ionization anomaly (EIA) and equatorial temperature anomaly (ETA) has been studied using the atomic oxygen dayglow emissions at 577.7 nm (OI 557.7 nm) and 732.0 nm (OII 732.0 nm). For the purpose of this study, four intense geomagnetic storms during the ascending phase of solar cycle 24 ...
Gaurav Bharti, Tikemani Bag
exaly   +2 more sources

The time delay between the equatorial ionization anomaly and the equatorial electrojet in the eastern Asian and American sectors

Advances in Space Research, 2022
Abstract The daily evolution of the Equatorial Ionization Anomaly (EIA) and the Equatorial Electrojet (EEJ) exhibits phase difference, which reflects the response time of the F-region equatorial plasma fountain to the E-region electric field variation.
Jing Liu, Yongqiang Hao, Donghe Zhang
exaly   +2 more sources

Recent developments in the understanding of equatorial ionization anomaly: A review

Journal of Atmospheric and Solar-Terrestrial Physics, 2018
Abstract A brief review of the recent developments in the understanding of the equatorial plasma fountain (EPF) and equatorial ionization anomaly (EIA) under quiet and active conditions is presented. It is clarified that (1) the EPF is not upward ExB plasma drift at the equator followed by downward plasma diffusion, but it is field perpendicular ExB ...
Jonas R Souza, N Balan, G J Bailey
exaly   +2 more sources

On the relationship between the postmidnight thermospheric equatorial mass anomaly and equatorial ionization anomaly under geomagnetic quiet conditions [PDF]

Journal of Geophysical Research: Space Physics, 2011
The equatorial mass anomaly (EMA) in the thermosphere and equatorial ionization anomaly (EIA) in the ionosphere are two interesting phenomena in low-equatorial latitude regions. Previous studies have shown that the EMA appears between 1000 and 2000 local time (LT) and its location of trough is aligned with dip equator, indicating the plausible role of ...
Libo Liu, Biqiang Zhao, Jiuhou Lei
exaly   +2 more sources

Role of equatorial ionization anomaly in the initiation of equatorial spread F

Journal of Geophysical Research: Space Physics, 1988
A comparative study is made of the changes in the latitudinal structure of the F region electron density at fixed altitudes in the Indian equatorial region on days with and without postsunset onset of equatorial spread F, using (N‐h) profile data of Ahmedabad (dip latitude 18.6°N), Waltair (dip latitude 10.6°N), and Kodaikanal (dip latitude 1.5°N).
R. Raghavarao, M. Nageswararao, J. Hanumath Sastri, G. D. Vyas, M. Sriramarao   +4 more
openaire   +1 more source