Event Title

Ionospheric Effects of Substorms

Location

Yosemite National Park

Start Date

2-6-1974 11:15 AM

End Date

2-6-1974 11:30 AM

Description

A 9 hour period during which the AFCRL Flying Ionospheric Laboratory monitored local midnight continuously at auroral latitudes is the subject of an intensive coordinated study. Four substorms occurred during this period as detected by the airborne all sky photographs which made possible the identification of the brightening, expansion and contraction phases and the determination of the onset and duration times for each phase. Other observatories which were coordinated in this study included the DAPP and ISIS-2 satellites which were both in the local midnight plane and thus intersected the aircraft repeatedly; and numerous ground stations located throughout a wide range of latitude and longitude. Interpreted in terms of the substorm times are: ionospheric soundings, auroral photographs, and photometric measurements from ground, air and satellite, particle detector, magnetometer, riometer, VHF scintillation and total electron content measurements.

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Feb 6th, 11:15 AM Feb 6th, 11:30 AM

Ionospheric Effects of Substorms

Yosemite National Park

A 9 hour period during which the AFCRL Flying Ionospheric Laboratory monitored local midnight continuously at auroral latitudes is the subject of an intensive coordinated study. Four substorms occurred during this period as detected by the airborne all sky photographs which made possible the identification of the brightening, expansion and contraction phases and the determination of the onset and duration times for each phase. Other observatories which were coordinated in this study included the DAPP and ISIS-2 satellites which were both in the local midnight plane and thus intersected the aircraft repeatedly; and numerous ground stations located throughout a wide range of latitude and longitude. Interpreted in terms of the substorm times are: ionospheric soundings, auroral photographs, and photometric measurements from ground, air and satellite, particle detector, magnetometer, riometer, VHF scintillation and total electron content measurements.