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First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT

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First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT. / Kosch, Michael; Vickers, H.; Ogawa, Y. et al.
In: Geophysical Research Letters, Vol. 41, No. 21, 16.11.2014, p. 7427-7435.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Kosch, M, Vickers, H, Ogawa, Y, Senior, A & Blagoveshchenskaya, NF 2014, 'First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT', Geophysical Research Letters, vol. 41, no. 21, pp. 7427-7435. https://doi.org/10.1002/2014GL061679

APA

Vancouver

Kosch M, Vickers H, Ogawa Y, Senior A, Blagoveshchenskaya NF. First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT. Geophysical Research Letters. 2014 Nov 16;41(21):7427-7435. Epub 2014 Nov 12. doi: 10.1002/2014GL061679

Author

Kosch, Michael ; Vickers, H. ; Ogawa, Y. et al. / First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT. In: Geophysical Research Letters. 2014 ; Vol. 41, No. 21. pp. 7427-7435.

Bibtex

@article{4ad2a8ace5fb440f979a8db781075815,
title = "First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT",
abstract = "We have developed an active ground-based technique to estimate the steady state field-aligned anomalous electric field (E*) in the topside ionosphere, up to ~600 km, using the European Incoherent Scatter (EISCAT) ionospheric modification facility and UHF incoherent scatter radar. When pumping the ionosphere with high-power high-frequency radio waves, the F region electron temperature is significantly raised, increasing the plasma pressure gradient in the topside ionosphere, resulting in ion upflow along the magnetic field line. We estimate E* using a modified ion momentum equation and the Mass Spectrometer Incoherent Scatter model. From an experiment on 23 October 2013, E* points downward with an average amplitude of ~1.6 μV/m, becoming weaker at higher altitudes. The mechanism for anomalous resistivity is thought to be low-frequency ion acoustic waves generated by the pump-induced flux of suprathermal electrons. These high-energy electrons are produced near the pump wave reflection altitude by plasma resonance and also result in observed artificially induced optical emissions.",
keywords = "ionosphere, electric field",
author = "Michael Kosch and H. Vickers and Y. Ogawa and Andrew Senior and Blagoveshchenskaya, {N. F.}",
year = "2014",
month = nov,
day = "16",
doi = "10.1002/2014GL061679",
language = "English",
volume = "41",
pages = "7427--7435",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "21",

}

RIS

TY - JOUR

T1 - First observation of the anomalous electric field in the topside ionosphere by ionospheric modification over EISCAT

AU - Kosch, Michael

AU - Vickers, H.

AU - Ogawa, Y.

AU - Senior, Andrew

AU - Blagoveshchenskaya, N. F.

PY - 2014/11/16

Y1 - 2014/11/16

N2 - We have developed an active ground-based technique to estimate the steady state field-aligned anomalous electric field (E*) in the topside ionosphere, up to ~600 km, using the European Incoherent Scatter (EISCAT) ionospheric modification facility and UHF incoherent scatter radar. When pumping the ionosphere with high-power high-frequency radio waves, the F region electron temperature is significantly raised, increasing the plasma pressure gradient in the topside ionosphere, resulting in ion upflow along the magnetic field line. We estimate E* using a modified ion momentum equation and the Mass Spectrometer Incoherent Scatter model. From an experiment on 23 October 2013, E* points downward with an average amplitude of ~1.6 μV/m, becoming weaker at higher altitudes. The mechanism for anomalous resistivity is thought to be low-frequency ion acoustic waves generated by the pump-induced flux of suprathermal electrons. These high-energy electrons are produced near the pump wave reflection altitude by plasma resonance and also result in observed artificially induced optical emissions.

AB - We have developed an active ground-based technique to estimate the steady state field-aligned anomalous electric field (E*) in the topside ionosphere, up to ~600 km, using the European Incoherent Scatter (EISCAT) ionospheric modification facility and UHF incoherent scatter radar. When pumping the ionosphere with high-power high-frequency radio waves, the F region electron temperature is significantly raised, increasing the plasma pressure gradient in the topside ionosphere, resulting in ion upflow along the magnetic field line. We estimate E* using a modified ion momentum equation and the Mass Spectrometer Incoherent Scatter model. From an experiment on 23 October 2013, E* points downward with an average amplitude of ~1.6 μV/m, becoming weaker at higher altitudes. The mechanism for anomalous resistivity is thought to be low-frequency ion acoustic waves generated by the pump-induced flux of suprathermal electrons. These high-energy electrons are produced near the pump wave reflection altitude by plasma resonance and also result in observed artificially induced optical emissions.

KW - ionosphere

KW - electric field

U2 - 10.1002/2014GL061679

DO - 10.1002/2014GL061679

M3 - Journal article

VL - 41

SP - 7427

EP - 7435

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 21

ER -