An intense eastward flow of about four-week duration found at the equator in the Indian Ocean during the transition periods between the monsoon seasons (April–June and October–December). Speeds at the equator can exceed 1 m s−1 but fall off to less than 0. 2 m s−1 at 2°S and 2°N. The jet is the result of sea level adjustment to the change of wind direction from one monsoon season to the next.