A regional geomagnetic model using fourier analysis

dc.contributor.author	Jayapal, R.
dc.contributor.author	Gopal, Shenu
dc.contributor.author	Anilkumar, C.P.
dc.contributor.author	Venugopal, Chandu
dc.date.accessioned	2017-11-07T12:13:05Z
dc.date.accessioned	2021-02-12T10:08:39Z
dc.date.available	2017-11-07T12:13:05Z
dc.date.available	2021-02-12T10:08:39Z
dc.date.issued	2016
dc.identifier.citation	International Research Journal of Natural and Applied Sciences, 3, 1	en_US
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/1084
dc.description.abstract	We have Fourier analysed the horizontal component (H) of the Earth’s magnetic field at Thiruvananthapuram (lat. 8o 29’ N, long. 76o 59’ E) during the years 1987 to 1998. The infinite number of terms in the Fourier expansion was truncated after the fifth term for both magnetically “quiet” and “disturbed” days. We find that terms up to order 5 are sufficient to model the observed magnetic field at Thiruvananthapuram during both magnetically quiet and disturbed days, as there is an excellent agreement between the observed and the Fourier analysed and reconstructed fields. The seasonal and solar cycle dependence of the Fourier amplitudes have also been studied; we find the Fourier amplitudes are well correlated with the sunspot numbers.	en_US
dc.language.iso	en	en_US
dc.subject	Fourier analysis	en_US
dc.subject	Equatorial Station	en_US
dc.subject	Gomagnetic field model	en_US
dc.title	A regional geomagnetic model using fourier analysis	en_US
dc.type	Article	en_US
dc.identifier.accession	091627