project_ERO_2019
project_ERO_2019

ero_new
ero_new

site_collage
site_collage

project_ERO_2019
project_ERO_2019

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ETNA RADIO OBSERVATORY
TOOLS AND TEST GALLERY
 

PC_04_29AUG15-0000_coil-8h
PC_04_29AUG15-0000_coil-8h

In 1976, Polyakov (1976) predicted the existence of ionospheric Alfvén resonator (IAR), equivalent to the ionospheric waveguide, but operating in vertical direction with shear Alfvén waves. According to the theory, further developed by Polyakov and Rapoport (1981), waves can be trapped between two altitudes characterized by large Alfvén velocity gradients: the lower limit occurs at ionospheric F-layer, the upper limit at about 3000 km. For a review, see, e.g., Lysak (1993).

PC_06_21MAR15-0400_coil-8h
PC_06_21MAR15-0400_coil-8h

ERO_LOGO
ERO_LOGO

PC_04_29AUG15-0000_coil-8h
PC_04_29AUG15-0000_coil-8h

In 1976, Polyakov (1976) predicted the existence of ionospheric Alfvén resonator (IAR), equivalent to the ionospheric waveguide, but operating in vertical direction with shear Alfvén waves. According to the theory, further developed by Polyakov and Rapoport (1981), waves can be trapped between two altitudes characterized by large Alfvén velocity gradients: the lower limit occurs at ionospheric F-layer, the upper limit at about 3000 km. For a review, see, e.g., Lysak (1993).

1/15
SRS_last-coil_8h
SRS_last-coil_8h

In 1976, Polyakov (1976) predicted the existence of ionospheric Alfvén resonator (IAR), equivalent to the ionospheric waveguide, but operating in vertical direction with shear Alfvén waves. According to the theory, further developed by Polyakov and Rapoport (1981), waves can be trapped between two altitudes characterized by large Alfvén velocity gradients: the lower limit occurs at ionospheric F-layer, the upper limit at about 3000 km. For a review, see, e.g., Lysak (1993).

ERO_LOGO
ERO_LOGO

SRS_last-coil_8h
SRS_last-coil_8h

In 1976, Polyakov (1976) predicted the existence of ionospheric Alfvén resonator (IAR), equivalent to the ionospheric waveguide, but operating in vertical direction with shear Alfvén waves. According to the theory, further developed by Polyakov and Rapoport (1981), waves can be trapped between two altitudes characterized by large Alfvén velocity gradients: the lower limit occurs at ionospheric F-layer, the upper limit at about 3000 km. For a review, see, e.g., Lysak (1993).

1/2

SRS - Spectral Resonance Structures 
 

GW_019_16SEP15-0001_coil-daily
GW_019_16SEP15-0001_coil-daily

GW_017_15SEP15-1200_coil-8h
GW_017_15SEP15-1200_coil-8h

ERO_LOGO
ERO_LOGO

GW_019_16SEP15-0001_coil-daily
GW_019_16SEP15-0001_coil-daily

1/6

radio nature and the sounds of a thunderstorm

ERO recording with NASA INSPIRE VLF-3 receiver

lestelle_giugno2018_179
lestelle_giugno2018_179

rivista_lestelle
rivista_lestelle

ERO_LOGO
ERO_LOGO

lestelle_giugno2018_179
lestelle_giugno2018_179

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PUBLICATIONS