The radiation stresses in short-crested waves are expressed in terms of the two-dimensional energy spectrum of the wave elevation. It is shown that, for wind-driven waves, the short-crestedness has a considerable influence on the ratios of the radiation stresses to the average energy content of the waves per unit area.
Battjes, J. A.. 1972. "Radiation stresses in short-crested waves." Journal of Marine Research 30, (1). https://elischolar.library.yale.edu/journal_of_marine_research/1228