Swells in the Bay of Bengal associated with storms in November

Abstract

The observations of swell and wind from ships in the Bay of Bengal in and adjacent to a storm field charted on synoptic maps were combined to form a composite chart keeping the position of the various observations relative to the centre and direction of movement of the storm the same. It is observed from these charts drawn for different storms in the month of November that (I) over all regions of the storm, the direction of the wind and the swell are generally inclined in such a way that an observer facing the direction in which the swell moves find, the wind blowing from a direction which is inclined to his right, (2) there is comparatively larger difference in the direction of the swell and that of the wind in the front left sector of the storm field, (3) Eliot's conclusion that the direction from which the swell is experienced outside the storm area nearly coincides with the direction of movement of the storm centre does not hold so well in the right rear quadrant as in the other regions.