A study of L-band scintillations and total electron content
at an equatorial station, Lagos, Nigeria

A O Adewale; E O Oyeyemi; A B Adeloye; Cathryn N Mitchell; Julian A R Rose; P J Cilliers

doi:10.1029/2011RS004846

A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria

A O Adewale, E O Oyeyemi, A B Adeloye, Cathryn N Mitchell, Julian A R Rose, P J Cilliers

Department of Electronic & Electrical Engineering

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Abstract

In this paper we present the first results from measurements of scintillation and total electron content (TEC) from an equatorial station, Lagos (Latitude 6.5 N, Longitude 3.4 E, magnetic latitude 3.03 S), Nigeria, using a Novatel GSV4004B GPS ionospheric scintillation and TEC monitor. Details are presented for data collected between February 2010 and August 2010. The results show that the presence of some large scale depletions of TEC or plasma bubbles may be noted during the evening hours and that TEC depletions correspond to increased rate of change of TEC (ROT). This confirms that plasma bubbles are associated with large scale irregularities. It is also established that enhanced amplitude scintillation (S4) corresponds quite well with TEC depletions and increases in ROT. The diurnal and seasonal percentage occurrence for different levels of scintillation activity has peaks in the equinox months (March and April) at 23:00 LT.

Original language	English
Article number	RS004846
Journal	Radio Science
Volume	47
Issue number	RS2011
DOIs	https://doi.org/10.1029/2011RS004846
Publication status	Published - 7 Apr 2012

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10.1029/2011RS004846

Rose Radio-Sci 2012 47 RS004846
Copyright 2012 by the American Geophysical Union.
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title = "A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria",

abstract = "In this paper we present the first results from measurements of scintillation and total electron content (TEC) from an equatorial station, Lagos (Latitude 6.5 N, Longitude 3.4 E, magnetic latitude 3.03 S), Nigeria, using a Novatel GSV4004B GPS ionospheric scintillation and TEC monitor. Details are presented for data collected between February 2010 and August 2010. The results show that the presence of some large scale depletions of TEC or plasma bubbles may be noted during the evening hours and that TEC depletions correspond to increased rate of change of TEC (ROT). This confirms that plasma bubbles are associated with large scale irregularities. It is also established that enhanced amplitude scintillation (S4) corresponds quite well with TEC depletions and increases in ROT. The diurnal and seasonal percentage occurrence for different levels of scintillation activity has peaks in the equinox months (March and April) at 23:00 LT.",

author = "Adewale, {A O} and Oyeyemi, {E O} and Adeloye, {A B} and Mitchell, {Cathryn N} and Rose, {Julian A R} and Cilliers, {P J}",

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T1 - A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria

AU - Adewale, A O

AU - Oyeyemi, E O

AU - Adeloye, A B

AU - Mitchell, Cathryn N

AU - Rose, Julian A R

AU - Cilliers, P J

PY - 2012/4/7

Y1 - 2012/4/7

N2 - In this paper we present the first results from measurements of scintillation and total electron content (TEC) from an equatorial station, Lagos (Latitude 6.5 N, Longitude 3.4 E, magnetic latitude 3.03 S), Nigeria, using a Novatel GSV4004B GPS ionospheric scintillation and TEC monitor. Details are presented for data collected between February 2010 and August 2010. The results show that the presence of some large scale depletions of TEC or plasma bubbles may be noted during the evening hours and that TEC depletions correspond to increased rate of change of TEC (ROT). This confirms that plasma bubbles are associated with large scale irregularities. It is also established that enhanced amplitude scintillation (S4) corresponds quite well with TEC depletions and increases in ROT. The diurnal and seasonal percentage occurrence for different levels of scintillation activity has peaks in the equinox months (March and April) at 23:00 LT.

AB - In this paper we present the first results from measurements of scintillation and total electron content (TEC) from an equatorial station, Lagos (Latitude 6.5 N, Longitude 3.4 E, magnetic latitude 3.03 S), Nigeria, using a Novatel GSV4004B GPS ionospheric scintillation and TEC monitor. Details are presented for data collected between February 2010 and August 2010. The results show that the presence of some large scale depletions of TEC or plasma bubbles may be noted during the evening hours and that TEC depletions correspond to increased rate of change of TEC (ROT). This confirms that plasma bubbles are associated with large scale irregularities. It is also established that enhanced amplitude scintillation (S4) corresponds quite well with TEC depletions and increases in ROT. The diurnal and seasonal percentage occurrence for different levels of scintillation activity has peaks in the equinox months (March and April) at 23:00 LT.

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A study of L-band scintillations and total electron content at an equatorial station, Lagos, Nigeria

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