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Title: Observations of the neutral atmosphere between 100 and 200 km using ARIA rocket-borne and ground-based instruments

Abstract

The atmospheric response in the aurora (ARIA) rocket was launched at 1406 UT on March 3, 1992, from Poker Flat, Alaska, into a pulsating diffuse aurora; rocket-borne instruments included an eight-channel photometer, a far ultraviolet spectrometer, a 130.4-nm atomic oxygen resonance lamp, and two particle spectrometers covering the energy range of 1-400 eV and 10 eV to 20 keV. The photometer channels were isolated using narrow-band interference filters and included measurements of the strong permitted auroral emissions N{sub 2} (337.1 nm), N{sub 2}{sup +} (391.4 nm), and O I (844.6 nm). A ground-based photometer measured the premitted N{sub 2}{sup +} (427.8 nm), the forbidden O I (630.0 nm), and the premitted O I (844.6 nm) emissions. The ground-based instrument was pointed in the magnetic zenith. Also, the rocket payload was pointed in the magnetic zenith from 100 to 200 km on the upleg. The data were analyzed using the Strickland electron transport code, and the rocket and ground-based results were found to be in good agreement regarding the inferred characteristic energy of the precipitating auroral flux and the composition of the neutral atmosphere during the rocket flight. In particular, it was found that the O/N{sub 2} density ratio in themore » neutral atmosphere diminished during the auroral substorm, which started about 2 hours before the ARIA rocket flight. The data showed that there was about a 10-min delay between the onset of the substorm and the decrease of the O/N{sub 2} density ratio. At the time of the ARIA flight this ratio had nearly returned to its presubstorm value. However, the data also showed that the O/N{sub 2} density ratio did not recover to its presubstorm value until nearly 30 min after the particle and joule heating had subsided. Both the photometer and oxygen densities in the region above 130 km. The observed auroral brightness ratio B{sub 337.1}/B{sub 391.4} equaled 0.29 and was in agreement with other recent measurements.« less

Authors:
; ;  [1]
  1. Aerospace Corporation, Los Angeles, CA (United States); and others
Publication Date:
OSTI Identifier:
175842
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research
Additional Journal Information:
Journal Volume: 100; Journal Issue: A9; Other Information: PBD: 1 Sep 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; EARTH ATMOSPHERE; MEASURING METHODS; AURORAE; ROCKETS; PHOTOMETERS; NITROGEN IONS; OXYGEN; MEASURING INSTRUMENTS; ULTRAVIOLET SPECTROMETERS

Citation Formats

Hecht, J H, Christensen, A B, and Gutierrez, D J. Observations of the neutral atmosphere between 100 and 200 km using ARIA rocket-borne and ground-based instruments. United States: N. p., 1995. Web. doi:10.1029/95JA00229.
Hecht, J H, Christensen, A B, & Gutierrez, D J. Observations of the neutral atmosphere between 100 and 200 km using ARIA rocket-borne and ground-based instruments. United States. https://doi.org/10.1029/95JA00229
Hecht, J H, Christensen, A B, and Gutierrez, D J. 1995. "Observations of the neutral atmosphere between 100 and 200 km using ARIA rocket-borne and ground-based instruments". United States. https://doi.org/10.1029/95JA00229.
@article{osti_175842,
title = {Observations of the neutral atmosphere between 100 and 200 km using ARIA rocket-borne and ground-based instruments},
author = {Hecht, J H and Christensen, A B and Gutierrez, D J},
abstractNote = {The atmospheric response in the aurora (ARIA) rocket was launched at 1406 UT on March 3, 1992, from Poker Flat, Alaska, into a pulsating diffuse aurora; rocket-borne instruments included an eight-channel photometer, a far ultraviolet spectrometer, a 130.4-nm atomic oxygen resonance lamp, and two particle spectrometers covering the energy range of 1-400 eV and 10 eV to 20 keV. The photometer channels were isolated using narrow-band interference filters and included measurements of the strong permitted auroral emissions N{sub 2} (337.1 nm), N{sub 2}{sup +} (391.4 nm), and O I (844.6 nm). A ground-based photometer measured the premitted N{sub 2}{sup +} (427.8 nm), the forbidden O I (630.0 nm), and the premitted O I (844.6 nm) emissions. The ground-based instrument was pointed in the magnetic zenith. Also, the rocket payload was pointed in the magnetic zenith from 100 to 200 km on the upleg. The data were analyzed using the Strickland electron transport code, and the rocket and ground-based results were found to be in good agreement regarding the inferred characteristic energy of the precipitating auroral flux and the composition of the neutral atmosphere during the rocket flight. In particular, it was found that the O/N{sub 2} density ratio in the neutral atmosphere diminished during the auroral substorm, which started about 2 hours before the ARIA rocket flight. The data showed that there was about a 10-min delay between the onset of the substorm and the decrease of the O/N{sub 2} density ratio. At the time of the ARIA flight this ratio had nearly returned to its presubstorm value. However, the data also showed that the O/N{sub 2} density ratio did not recover to its presubstorm value until nearly 30 min after the particle and joule heating had subsided. Both the photometer and oxygen densities in the region above 130 km. The observed auroral brightness ratio B{sub 337.1}/B{sub 391.4} equaled 0.29 and was in agreement with other recent measurements.},
doi = {10.1029/95JA00229},
url = {https://www.osti.gov/biblio/175842}, journal = {Journal of Geophysical Research},
number = A9,
volume = 100,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 1995},
month = {Fri Sep 01 00:00:00 EDT 1995}
}