Etna Radio Observatory
tool and test gallery
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).
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 Geomagnetic storm with many pulsation (PC)
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).
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 Spectral Resonance Structures (SRS)
ERO LIGO Gravitational Wave Detection (what we were receiving during that event)
ERO Geomagnetic pulsation registered the 10-11/may/2024 from Nicolosi ERO-PARK station, on a frequency of between 1 and 4 Hz, listen to auio streaming
ERO Radio Nature and the sounds of a thunderstorm, recording with NASA INSPIRE VLF-3 receiver
ERO publications paper
ERO, hunting for lapilli
ERO, use of the SensorTile.box from STMICROELECTRONICS.
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Etna, onward another ... eruption
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promo of the activity carried out
ERO microwave system
ERO, sonar for proximity applications
ERO, paroxysm with lapilli fallout
ERO earthquake sensor with capsule
Etna,the breath of magma
ERO Etna eruption of 07.03.2021 and volcanic cloud path EUMETSAT
ERO Etna, the voice of a volcano
Etna, SAR (Stabile Aurorale Red arc) del 10-11/May/2024
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Etna eruption of October 23, 2021