Phenomenological approaches to co-oscillating tide in Ariake Bay by time-frequency, nonlinear methods

There is scarce information on Ariake Bay though it is very controversial from a point of view of ecology. The marine harvests in the bay have been highly damaged. The decrease of the productivity of the bay is quite apparent, so we will have to clarify the main negative factors. In the present study, we attempt to disclose the special features of this inner bay by a time frequency approach and a nonlinear method along with the satellite observations for better understandings on the bay and obtaining a clue to prevent more damages. These approaches aim to obtain some findings on this bay, especially a delicate rhythm of tidal movements which may have to do with high productivity of the bay.