A 3-year observation of the ionospheric critical frequency over Malaysia

MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.

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Bibliographic Details
Main Authors:	Sabirin, Abdullah, Ahmad Faizal, Mohd. Zain
Format:	Working Paper
Language:	English
Published:	Universiti Malaysia Pahang (UMP) 2010
Subjects:	Ionosphere Critical frequency Equatorial region Solar minimum Sunspot number Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
Online Access:	http://dspace.unimap.edu.my/xmlui/handle/123456789/9077
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Institution:	Universiti Malaysia Perlis
Language:	English

id	my.unimap-9077
record_format	dspace
spelling	my.unimap-90772010-08-25T02:09:15Z A 3-year observation of the ionospheric critical frequency over Malaysia Sabirin, Abdullah Ahmad Faizal, Mohd. Zain Ionosphere Critical frequency Equatorial region Solar minimum Sunspot number Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang. The ionosphere is the topside of the atmosphere that contains high concentration of ions and can reflect radio waves due to refraction. The ionospheric region of interest is located above the equatorial region at longitude 1° 52' and latitude 103° 48' (Parit Raja, Johor). The observations of the ionospheric critical frequency were made from 2005 to 2007. The critical frequency is determined by using the monthly median value for each day. Regression analysis was used on the theoretical and observed value. The observed value is obtained from ionogram measurements with five-minute intervals using logarithmic frequency steps from 1 Mhz to 20 Mhz. The sunspot number is used as a parameter to compare the values of critical frequency at high sunspot and low sunspot numbers for the day. The critical frequency for the years 2005, 2006 and 2007 show that the higher value is for 2005 while the critical frequency is much lower for 2006 and 2007. The correlation analysis is used to determine the relationship for the yearly value. The correlation is made using the median value of the foF2 critical frequency from 2005 until 2007. The regression and correlation analysis of the critical frequency was able to show the trend of the critical frequency for the year 2005, 2006 and 2007. 2010-08-25T02:09:15Z 2010-08-25T02:09:15Z 2009-06-20 Working Paper http://hdl.handle.net/123456789/9077 en Proceedings of the Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) 2009 Universiti Malaysia Pahang (UMP)
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Ionosphere Critical frequency Equatorial region Solar minimum Sunspot number Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
spellingShingle	Ionosphere Critical frequency Equatorial region Solar minimum Sunspot number Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) Sabirin, Abdullah Ahmad Faizal, Mohd. Zain A 3-year observation of the ionospheric critical frequency over Malaysia
description	MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.
format	Working Paper
author	Sabirin, Abdullah Ahmad Faizal, Mohd. Zain
author_facet	Sabirin, Abdullah Ahmad Faizal, Mohd. Zain
author_sort	Sabirin, Abdullah
title	A 3-year observation of the ionospheric critical frequency over Malaysia
title_short	A 3-year observation of the ionospheric critical frequency over Malaysia
title_full	A 3-year observation of the ionospheric critical frequency over Malaysia
title_fullStr	A 3-year observation of the ionospheric critical frequency over Malaysia
title_full_unstemmed	A 3-year observation of the ionospheric critical frequency over Malaysia
title_sort	3-year observation of the ionospheric critical frequency over malaysia
publisher	Universiti Malaysia Pahang (UMP)
publishDate	2010
url	http://dspace.unimap.edu.my/xmlui/handle/123456789/9077
_version_	1643789402175963136

A 3-year observation of the ionospheric critical frequency over Malaysia

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