Open AccessAN INVESTIGATION INTO THE CAUSES OF THE ANNUAL VARIATION OF MEAN SEA‐LEVEL IN THE NORTH SEA
Author(s) -
Allison N. W.
Publication year - 1947
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.1947.tb00350.x
Subject(s) - variation (astronomy) , sea level , seasonality , oceanography , climatology , geology , environmental science , spring (device) , physics , astrophysics , mechanical engineering , statistics , mathematics , engineering
Summary A study of the Tidal records for North Sea ports reveals, for each port, an annual variation. The maximum occurs in the late autumn (usually in November) and the minimum in the spring (usually in May). The main factors causing this variation are (i) seasonal changes in the strength of the prevalent winds, (ii) seasonal changes in the density of the water. The magnitudes of these effects are obtained. The results show that there is an annual variation in the “calm” level of the North Sea, varying from 8 cm. in the Northern half to some 15 cm. in the Southern half.