They proposed a standard spectrum, JONSWAP spectrum, for the fetch-limited wind waves, which simulate well the sharp spectral form in the limited fetches as compared to the fully developed spectrum obtained by Pierson and Moskowitz (1964).
A little before the publication of the JONSWAP report, Toba (1972) (43) clarified an important property of the wind waves in the generation area: the 3/2 power law.
47) In 1973, when the report of the JONSWAP was published, Toba (1973) (47) presented an important study on the spectrum of wind waves.
Until the beginning of the 1970s, many spectral forms for the frequency spectrum were presented: the Phillips' equilibrium spectrum, (39) the Pierson-Moskowitz spectrum, (40) the JONSWAP spectrum (29) and Toba's spectrum.
1980) (57) presented another form of the angular distribution function which was determined from the wave data obtained by using their pitch and roll buoy at the JONSWAP site.