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Rocket and ground‐based measurements of the dayside magnetospheric cleft from Cape Parry, N.W.T.
Author(s) -
Shepherd G. G.,
Pieau J. F.,
Creutzberg F.,
McNamara A. G.,
Gerard J. C.,
McEwem D. J.,
Delana B.,
Whitteker J. H.
Publication year - 1976
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl003i002p00069
Subject(s) - rocket (weapon) , physics , electron precipitation , daytime , parry , geophysics , polar , magnetosphere , geology , atmospheric sciences , astronomy , aerospace engineering , plasma , quantum mechanics , engineering , artificial intelligence , computer science
On Dec. 6, 1974, a Black Brant VB rocket was launched from Cape Parry, N.W.T. into the dayside magnetospheric cleft. The prime launch criterion was the detection of 6300 Å emission by two ground based scanning photometers, but support was provided by two ionosondes. The payload passed through a narrow region of several ergs cm −2 sr −1 sec −1 of soft electron precipitation, a broader region of enhanced electron densities, and a similarly broad region of 0I5577 and 6300 Å emission. At apogee of 236 km the payload had not penetrated into the 5200 Å emission, which had a very sharp equatorward boundary, and extended far into the polar cap, presumably as a result of anti‐sunward convection.