Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"equatorial ionosphere"”.
-
Remote Sensing of Irregularities in the Equatorial Ionosphere Using the Radio Scintillation Technique
… in detail. The signals were recorded at an equatorial location which is almost directly beneath the satellites. The scintillation is caused by refraction and diffraction of the signals by variations of the refractive index in the F layer of the ionosphere. This study is directed toward using …
-
Incoherent scatter modeling of Jicamarca radar spectra
… electron density irregularities of the topside equatorial ionosphere probed by the Jicamarca Incoherent Scatter Radar (ISR) located near Lima, Peru. The topside equatorial ionosphere is a multi-ion plasma and the spectrum of its electron density irregularities can be modeled by extending the …
-
ΒΡΑΔΥΝΗ ΔΙΙΣΗΜΕΡΙΝΗ ΔΙΑΔΟΣΗ ΠΟΛΥ ΥΨΗΛΩΝ ΡΑΔΙΟΣΥΧΝΟΤΗΤΩΝ ΜΕΤΑΞΥ ΕΛΛΑΔΟΣ ΚΑΙ ΑΦΡΙΚΗΣ ΓΥΡΩ ΑΠΟ ΤΟ ΜΕΓΙΣΤΟ ΤΟΥ 21ΟΥ ΗΛΙΑΚΟΥ ΚΥΚΛΟΥ (1978-1982)
… IS MADE RELATING AFTERNOON AND EVENING TYPETRANSEQUATORIAL PROPAGATION (TEP) WITH SPECIAL IONOSPHERIC PHENOMENA PRESENT IN THE EQUATORIAL ZONE. THE PARTICULARITIES OF THE EURO-AFRICAN TEP SECTOR ARE STATED TOGETHER WITH THE RESEARCH WORK CARRIED OUT DURING PAST TWO AND LAST SOLAR CYCLES. THE …
-
Long-term investigation of the lunar tide in the equatorial electrojet during stratospheric sudden warmings
The ionosphere, which is strongly influenced by the Sun, is known to be also affected by meteorological processes. These processes, despite having their origin in the troposphere and stratosphere, interact with the upper atmosphere. Such an interaction between atmospheric layers is known as …
-
Study of Coulomb collisions and magneto-ionic propagation effects on incoherent scatter radar measurements at Jicamarca
… study aims at modeling radar observations of the equatorial ionosphere carried out at the Jicamarca Radio Observatory (Lima, Peru) using antenna beams pointed perpendicular to the Earth's magnetic field B. A Monte Carlo procedure based on the simulation of charged particle trajectories in a …
-
Analysis of Ionospheric Data Sets to Identify Periodic Signatures Matching Atmospheric Planetary Waves
… in introducing variability to the low-latitude ionosphere. To better understand this coupling, this study investigates times when oscillations seen in both atmospheric planetary waves and ionospheric data-sets have similar periodicity. The planetary wave data-set used are temperature …
-
Study of waves observed in the equatorial ionospheric valley region using Jicamarca ISR and VIPIR ionosonde
… the Jicamarca Radio Observatory (JRO) and other equatorial stations and to contribute to the understanding of the physics of this region, we used JRO ISR and VIPIR ionosonde techniques to perform high spatial and temporal resolution measurements. We found correlations between VHF backscatter …