The Total Solar Eclipse of 23 October 1976 Observed at VLF

reportActive / Technical Report | Accession Number: ADA078399 | Open PDF

Abstract:

VLF transmissions at 13.6 and 22.3 kHz from Omega Reunion, Omega Japan, and NWC were monitored at Melbourne during the total solar eclipse of 23 October 1976. The solar obscuration function for each path was calculated and compared with the phase deviation observed experimentally. The phase response was found to be a non-linear function of solar obscuration with a maximum phase deviation which was less than expected when compared with the normal diurnal phase variation. A differential equation was developed to model the observations. The effective time constant of ionospheric response was found to be 4.3 or - 1.5 min and independent of reflection height.

Author(s):
Lynn, K. J.
Author Organization(s):
ELECTRONICS RESEARCH LAB ADELAIDE (AUSTRALIA)
Descriptive Note:
Technical rept.
Pagination:
0017

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ERL-0093-TR, DODA-AR-001-703
Monitor Series:
AR-001-703, DSTO
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.2_Non-Kinetic Means
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*SOLAR ECLIPSES, *RADIO NAVIGATION, NONLINEAR SYSTEMS, NAVIGATION, DIFFERENTIAL EQUATIONS, AUSTRALIA, FUNCTIONS(MATHEMATICS), VERY LOW FREQUENCY, IONOSPHERIC DISTURBANCES, IONOSPHERIC PROPAGATION, OBSERVATION, MATHEMATICAL MODELS, RADIO TRANSMISSION
Field(s)/Group(s):
Celestial Mechanics, Atmospheric Physics, Optical Detection and Detectors
Keyword(s):
FOREIGN REPORTS
Report Date:
1979 Aug 01