Computer Science
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ep%26s...52..237o&link_type=abstract
Earth, Planets and Space, Volume 52, p. 237-243.
Computer Science
5
Scientific paper
With the establishment of the new geomagnetic field observations in the Ocean Hemisphere Network Project (OHP) in Japan, minutes values of geomagnetic components, H D and Zhave been recorded. The hourly mean values were used to study the variations in these three components at these new equatorial electrojet regions. The results of the analysis carried out revealed that the amplitude of dHhas diurnal variation which peaks during the day at about local noon in all the three equatorial electrojet regions. This diurnal variation in Hwith Sq(H) enhancement in all the three regions are attributed to the enhanced dynamo action at these regions. Diurnal variation as observed in Dindicates that the equatorial electrojet current system has both east-west and north-south components. The pronounced magnitude of Zvariation as observed in Kiritimati is attributed mainly to sea induction. Also some abnormal features were observed on 23rd of January at Huancayo, in the components. Seasonal variations with more pronounced equinoctial maximum were observed in Hthan in Z. Dcomponent showed no consistent seasonal variation in all the regions. The equinoctial maximum is due to enhanced equatorial electron density at equinox. More research work, if carried out in these new regions will be useful in making more new contributions to the field of the dynamics of the equatorial electrojet region.
Hamano Yozo
Okeke F. N.
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