Accession Number:

AD0294700

Title:

FIELD-ALIGNED IRREGULARITIES IN THE ES REGION

Descriptive Note:

Corporate Author:

QUEENSLAND UNIV BRISBANE (AUSTRALIA)

Personal Author(s):

• GOODWIN,G.L.
• THOMAS,J.A.

Report Date:

1962-03-01

Pagination or Media Count:

1.0

Abstract:

A comparison of the known diurnal and seasonal behavior of constant height E sub sc AND SEQUENTIAL E sub ss sporadic-E echoes with that of field-aligned E sub d echoes from the E-region indicated that an increase in occurrence of E sub d echoes generally coincided with an increase in occurrence andor range spreading of E sub sc echoes, but was independent of the presence of E sub ss echoes. A detailed comparison indicated that at night in October and in day- and night-time in December almost all E sub sc clouds detected at frequencies at least down to 2.5 Mcs have irregularities which are field-aligned. Author

Descriptors:

• *ECHO RANGING
• *FREQUENCY
• DIURNAL VARIATIONS
• IONOSPHERIC DISTURBANCES
• RADIO WAVES
• GEOMAGNETISM

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE