Results 81 to 90 of about 312 (156)

The impact of the Hunga Tonga–Hunga Ha’apai volcanic eruption on the Peruvian atmosphere: from the sea surface to the ionosphere

open access: yesEarth, Planets and Space
The eruption of the Hunga Tonga Hunga Ha’apai volcano on 15 January 2022 significantly impacted the lower and upper atmosphere globally. Using multi-instrument observations, we described disturbances from the sea surface to the ionosphere associated with
E. E. Pacheco   +13 more
doaj   +1 more source

Counter-Electrojet Associated Changes in the Equatorial Anomaly: Part I -Evidence of Reversal of Upward Drifts [PDF]

open access: yes, 1980
35-39Ionosonde data from two stations and ionospheric electron content data from five stations in the Indian zone have been used in conjunction with the ground magnetic data to study the changes in the equatorial anomaly associated with counter ...
Jain, A R
core  

Equatorial Electrojet & Interplanetary Plasma Parameters [PDF]

open access: yes, 1975
132-137A comparative study of the day-to-day changes of equatorial electrojet parameters and interplanetary plasma parameters indicates that the normal noon-time electrojet weakens and counter-electrojet intensifies when positive B∞ (towards sun ...
Kane, R. P.
core  

Ionospheric VHF scattering near the magnetic equator during partial counter electrojet

open access: yes, 1975
During periods of partial counter electrojet, i.e. when ΔH at an equatorial station is positive but lees than ΔH at a non-equatorial low latitude station, the scatter echoes of VHP radio wares from the E-region of the ionosphere are shown to disappear ...
Rastogi, R. G.
core   +1 more source

Counter-Electrojet Associated Changes in the Equatorial Anomaly: Part II-Jicamarea Radar Observations of Reversal of Upward Drift [PDF]

open access: yes, 1980
67-68Published F-region vertical ion drift observations for Jicamarca are analyzed in conjunction with ground magnetic field data (H component) for Huancayo and Fuquene.
Jain, A R
core  

Influence of the Equatorial Counter-Electrojet on the Diurnal Variation of NmF2

open access: yes, 1980
247-248The association between the occurrence of the counter electrojet phenomenon and the diurnal variation of the maximum electron density of the F2-layer (NmF2) in the equatorial electrojet region is investigated by a simple technique.
Rao, B A, Rao, D R K
core  

Solar Flare Effect in Equatorial Magnetic Field during Morning Counter Electrojet [PDF]

open access: yes, 1981
190-192Surface geomagnetic signatures of intense solar radio noise bursts are studied from the magnetograms of several equatorial and low latitude observatories.
Rangarajan, G K, Rastogi, R G
core  

Equatorial Counter Electrojet-Solution of Some Dilemma [PDF]

open access: yes, 1986
114-118The examination of horizontal geomagnetic fields at Huancayo and Fuquene with corresponding fEsq at Huancayo at intervals of each 5 min during storms, revealed that any disappearance of Esq corresponded to the negative ∆H (Huancayo) ∆H (Fuquene ...
Patil, A, Alex, S, Rastogi, R G
core  

Formation of ionisation layers responsible for blanketing Es during daytime counter-electrojet over magnetic equator

open access: yes, 1992
A model using photochemistry and transport due to electric fields and gravity wave winds has been used to explain the formation of ionisation layers observed over an equatorial station Thumba (dip 0°47′S) with rocket-borne Langmuir probes during two ...
Pandey, R., Prakash, S., Sinha, H. S. S.
core   +1 more source

Disturbance daily variation of electrojet current at Indian longitude sector

open access: yes, 2000
Using the hourly mean data of the horizontal (H) and vertical (Z) components of the geomagnetic field at the set of nine observatories in India, it has been found that the Disturbance Daily Variation (SD) of H shows a prominent midday depression over the
Rastogi, R. G., R.G Rastogi
core   +1 more source

Home - About - Disclaimer - Privacy