The longitudinal and latitudinal effects on earth’s electromagnetism observed by MAGDAS/CPMN: article/ Fasiha Zainal Abidin

Geomagnetic parameters with different stations and latitudes give an effect on the magnetic variations due to local geomagnetic signatures and this has been proven by many researchers. However, the analysis on the changes rate of local geomagnetic activities is not well established yet. This paper discuss the correlation between the longitudinal and latitudinal effects on earth’s electromagnetism observed by Magnetic Data Acquisition System/Circum-Pan Pacific Magnetometer Network (MAGDAS/CPMN) developed by International Center for Space Weather and Education (ICSWSE) of Kyushu University in Japan. To investigate the longitudinal effect of geomagnetic data, three different stations from Tirunelveni, India (8.70°N, 77.80°E), Langkawi, Malaysia (6.30°N, 99.78°E) and Yap Island, Federated States of Micronesia (9.50°N, 138.08°E) have been analysed. For investigation on latitudinal effect, three different stations from Paratunka, Russia (52.94°N, 158.25°E) for high latitude, Ashibetsu, Japan (43.46°N, 142.17°E) for mid latitude and Davao, Philippine (7°N, 125.40°E) for low latitude also have been considered. All stations are located at northern hemisphere. To characterize the possible variations occurred at these stations, horizontal (H) parameter of MAGDAS data will be discussed due to its significant variations for analysing different geomagnetic data. The data was analysed during one month period at three consecutive years, 2007, 2008 and 2009. From this project, the geomagnetic parameters varies according to different geomagnetic monitoring stations. The analysed on H-component of geomagnetic variation shows higher dependence rate latitudinal as compared to longitudinal effect.