Open AccessSome features of the variability associated with solar and lunar daily variations
Author(s) -
Arora B. R.,
Sastri N. S.
Publication year - 1977
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1977.tb01331.x
Subject(s) - variation (astronomy) , solar variation , amplitude , earth's magnetic field , atmospheric sciences , solar cycle , solar maximum , environmental science , solar minimum , reflection (computer programming) , solar cycle 23 , astrobiology , geology , solar wind , physics , astronomy , magnetic field , optics , quantum mechanics , computer science , programming language
Summary Long‐term variability in solar and lunar daily variations, and its association with solar and magnetic activity, in the three geomagnetic elements, H, D and Z , at Alibag is studied by an analysis of the data for each year separately during the period 1932–72. From year to year, considerable change in amplitude, with very small change in phase, is noticed in the case of solar daily variation, whereas, for lunar daily variation, changes in both amplitude and phase are found to be large. Solar cycle influence on the solar daily variation is observed to be prominent, and a distinct influence on the lunar daily variations is also seen; the observed influence of magnetic activity on these variations appears to be merely a reflection of the strong association between solar and magnetic activities.