Mahakam delta is an interesting area of study because it has a rapid change in the structure morphology, this also affects MetOcean characteristics in the area.
To be able to look Interchangeability happens, then the temporal analysis needs to be done. To analyze the temporal variability, long term of data is required, in this case 20 years for wind and waves, and 17 years for currents and tides. Observation point is taken as close as possible to the delta and this time was chosen to study the mouth of Bayur Estuary.
