The equations governing the second-order covariances between surface gravity-wave field variables are derived for a linear sea. These equations are solved formally for two cases: the case of stationary homogeneous statistics and the case of quasistationary quasihomogeneous statistics....
Snyder, R. L.. 1973. "Covariance equations for a linear sea." Journal of Marine Research 31, (1). https://elischolar.library.yale.edu/journal_of_marine_research/1252