Rapid development continued for another 12 hours as it slowly moved through the ridge axis.

A sea floor map will show a rather strange pattern of blocky structures that are separated by linear features perpendicular to the ridge axis.

As the oceanic crust moves away from the ridge axis, the peridotite in the underlying mantle cools and becomes more rigid.

The system was then located just south of a 250-hPa ridge axis, in a diffluent region.

Tropical cyclones which cross the subtropical ridge axis into the Westerlies recurve due to the increased westerly flow.

The construction of the cones left a lot of debris scattered across the ocean surface, much of which is aligned parallel to the ridge axis.

The cooling and sinking ocean crust causes a tensile stress that also helps drive the pulling apart of the plates at the ridge axis.

The result is a slight lateral incline with distance from the ridge axis.

New magma emerges onto the ocean floor near the ridge axis.

Upper level analysis indicated that Nesat was to the south of a ridge axis in an area of moderate vertical wind shear.