Open AccessFirst results of Coherent Ionospheric Doppler Receiver measurements over Egypt
Author(s) -
Mahrous Ayman,
Shimeis Amira,
Garner Trevor
Publication year - 2010
Publication title -
space weather
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.254
H-Index - 56
ISSN - 1542-7390
DOI - 10.1029/2009sw000548
Subject(s) - tec , ionosphere , anomaly (physics) , crest , total electron content , geology , storm , doppler effect , middle latitudes , geophysics , meteorology , geodesy , atmospheric sciences , geography , physics , oceanography , astronomy , optics , condensed matter physics
This paper presents the first results of total electron content (TEC) measurements over Egypt taken by UHF/VHF receivers. Such ionospheric measurements over the Middle East and north Africa have been previously unable to the scientific community but are now available for ionospheric studies. In particular, these receivers are well situated to study the northern peak of the equatorial anomaly. This initial study examines the behavior of the equatorial anomaly during a weak magnetic storm of 12 July 2008. The response of the northern equatorial anomaly crest is examined during the storm time, using the TEC measurements from the Coherent Ionospheric Doppler Receivers (CIDR) at Helwan, Egypt (29.8641°N, 31.3172°E). Particular attention is shown to diurnal changes in the crest structure and its response to the minor magnetic storm.