Open AccessCorrelation analysis between the sunspots and the Nile flood
Author(s) -
M. A. Mosallam Shaltout,
Mariz Tadros
Publication year - 1990
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v41i4.2784
Subject(s) - flood myth , sunspot , environmental science , sunspot number , climatology , geography , hydrology (agriculture) , meteorology , geology , physics , solar cycle , geotechnical engineering , archaeology , magnetic field , solar wind , quantum mechanics
The analysis of the cross-relation between the time series of the annual mean value of sunspot number Rz with:
(a) The annual value of the maximum Nile flood for the period (1748-1914),
(b) The annual value of the difference of the old water and maximum Nile flood for the same period are carried out.
Also, the direct and the cross-correlation between the annual mean value of Rz with the following have been done:
(a) The annual value of rainfall in mm of Addis Ababa at Ethiopian high lands for the period (1900-1959),
(b) The annual value of the discharge of Albert lake (one of the white Nile sources) for the period (1904-1957), and
The annual value of the Nile discharge at Aswan (in Egypt) in 109 m3, for the period (1870-1960). The results indicate that the direct correlation coefficients are weak. But the cross-correlation show close to the eleven-year cycle of the sunspots.