APSTRACT 



An introduction to the study of sea level and its applications are presented. 

 Trends, their standard errors, and annual variabilities are computed for 44 U.S. 

 stations that are permanent, continuous, and were in operation before 1940. The 

 computations are for the entire length of series at each station and for the common 

 series length, 1940 through 1980. Trends, their standard errors, and annual 

 variabilities also are computed for five area means and the U.S. mean. Graphs of 

 area means, the U.S. mean, and 67 individual stations are depicted, the latter for 

 both yearly and monthly mean sea level. Monthly and yearly mean sea level data are 

 tabulated for the entire length of series at the 67 stations. 



VI 



