Results 91 to 100 of about 5,624 (239)

Ionogram height–time–intensity observations of descending sporadic E layers at mid-latitude

open access: yes, 2006
A new methodology of ionosonde height–time–intensity (HTI) analysis is introduced which allows the investigation of sporadic E layer ( E s ) vertical motion and variability.
C. Haldoupis   +5 more
semanticscholar   +1 more source

An Automatic CADI’s Ionogram Scaling Software Tool for Large Ionograms Data Analytics

open access: yesIEEE Access, 2022
Scale the ionosonde ionograms to produce accurate readings is a professional manual scaling technique. However, there is a high demand for auto-scaling software that can manage a large number of ionograms in order to avoid the time and effort involved in manual scaling as well as human errors.
T. Venkateswara Rao   +2 more
openaire   +1 more source

Ion effects on ionospheric electron resonance phenomena [PDF]

open access: yes
Ion effects are often observed on topside-sounder stimulated electron plasma wave phenomena. A commonly observed effect is a spur, appearing after a time delay corresponding to the proton gyro period, attached to the low frequency side of an electron ...
Benson, R. F.
core   +1 more source

Automated collection and dissemination of ionospheric data from the digisonde network [PDF]

open access: yes, 2004
The growing demand for fast access to accurate ionospheric electron density profiles and ionospheric characteristics calls for efficient dissemination of data from the many ionosondes operating around the globe.
A. Kozlov   +4 more
core  

Research on field-aligned propagation of HF radiowaves using Alouette 2 topside sounder data and digital ray-tracing techniques [PDF]

open access: yes
Field-aligned propagation of high frequency radio waves using Alouette 2 satellite ...
Herman, J. R.   +2 more
core   +1 more source

A study of the ionogram derived effective scale height around the ionospheric hm F2

open access: yes, 2006
. The diurnal, seasonal, and solar activity variations of the ionogram derived scale height around the ionospheric F-layer peak (Hm) are statistically analyzed at Wuhan (114.4° E, 30.6° N) and the yearly variations of Hm are also investigated for Wuhan ...
Lintao Liu, W. Wan, B. Ning
semanticscholar   +1 more source

Experimental investigations on the impedance behavior of a short, cylindrical antenna in a lossy magnetoplasma [PDF]

open access: yes
Impedance of cylindrical antennas in lossy magnetoplasmas and interpretations of maxima in cosmic noise intensities and ...
Bhat, B., Rao, B. R.
core   +1 more source

Can the polarization tagging of the ionogram trace deceive autoscaling methods? The Learmonth case

open access: yesAnnals of Geophysics, 2008
This paper focuses on the problem of invalid O/X polarization tagging of an ionogram and how this can affect ionogram autoscaling methods. To illustrate this problem, 623 ionograms recorded in March and April 2004 (days 080-105) by the digisonde 256
C. Scotto, M. Pezzopane
doaj   +1 more source

Electrostatic velocity-space instabilities stimulated near the harmonics of the electron cyclotron frequency in the ionosphere [PDF]

open access: yes
Data are presented on observations made in the ionospheric plasma that provide evidence for the stimulation of Harris type instabilities at nf sub H in a single electron transition.
Benson, R. F.
core   +1 more source

Data Citation at World Data Center for Geomagnetism, Kyoto [PDF]

open access: yes, 2018
International workshop on sharing, citation and publication of scientific data across disciplines: Session 4: Data Citation & Data PublicationWed.

core   +1 more source

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