Computer Science – Sound
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..321z&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 3, p. 321-335
Computer Science
Sound
9
Aerosols, Atmospheric Electricity, Atmospheric Physics, Atmospheric Sounding, Atmospherics, Electric Field Strength, Electric Fields, Electrical Measurement, Ion Density (Concentration), Mesosphere, Meteorology, Solar Activity Effects, Solar Protons, Sounding Rockets, Ion Recombination, Radiation Counters, Rocket-Borne Instruments, Ships, Tables (Data)
Scientific paper
In 1989, two series of rocket measurements were carried out to investigate middle atmosphere electric fields. The measurements were taken both in the Northern Hemisphere on Heiss Island (80 deg 37 N and 58 deg 03 min E) and in the Southern Hemisphere in the Indian Ocean (40-60 deg S and approx. 45 deg E) on board the research vessel 'Akademik Shirshov'. Along with the vertical electric fields, aerosol content and positive ion density were also measured. Some of the rocket launches were made during the extremely strong solar proton events (SPE) of October 1989. The experiments showed the strong variability of the electric fields in the middle atmosphere at polar and high middle latitudes. In all the measurements the maximum of the vertical electric field height profile in the lower mesosphere was observed to be more than approx. 1 V/m. The electric field strength and the field direction at maximum varied considerably among the launches. A maximum value of +12 V/m was detected at a height of about 58 km at 58 deg 30 mins on 21 October 1989 during the SPE. The simultaneous measurements of the electric field strength, positive ion density and aerosols point out both an ion-aerosol interaction and a connection between the mesospheric electric fields and aerosol content.
Bragin O. A.
Kikhtenko V. N.
Tyutin Aleksandr A.
Zadorozhny Alexander M.
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