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  Sci. Res. Impact.  

  5(5): 184-199, August 2019


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Scientific Research and Impact, Vol. 5(5), pp  184-199 August 2019


(ISSN 2315-5396) 2019 Science Park Journals

Full Length Research Paper



Bonde, D.S Abbas M1, Mohammad B. K1, Yoshikawa A2 and MAGDAS/CPMN Group2


1Department of Physics, Kebbi State University of Science and Technology, Aliero, Nigeria

2International Center for Space Weather Science and Education (ICSWSE), Kyushu University, JAPAN






The magnetic records obtained at low latitude geomagnetic observatory of Langkawi for the period of 3 years was used to study the diurnal and monthly-mean variation of the horizontal and vertical component of the Earth magnetic field during quiet and disturbed conditions. Results revealed that SqH and SqZ with their corresponding disturbed variations (SdH and SdZ) shows minimum values at nighttime (18:00-05:00 LT) that are lower than the pre-sunrise (05:00-07:00 LT) magnitudes. On quiet conditions, the SqH shows a daytime linear increase from 155 nT in 2011 to 160 and 162 nT in 2012 and 2013. The disturbed period exhibit irregular variation pattern with highest values 227, 215 and 237 nT in 2011, 2012 and 2013 respectively. The daytime maximum MSqH values increase from 125 nT in 2011 to 135 nT in October 2013, in contrast to MSdH that decrease progressively from 166 nT in September 2011 to 145 nT in March 2013. The daytime maximum SqZ and SdZ with their monthly-mean (MSqZ and MSdZ) readily conform to those amplitude variations pattern with lesser magnitudes. The daytime maxima of SqH with their MSqH were observed to occur around (10:00-12:00 LT) hours and shifted to 14:00 LT during disturbed period indication of modification of electric field during disturbed period.


Keywords:  Magnetic records and lesser magnitudes.







This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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