Fig. 3
From: A global scale submarine landform dataset driven by terrain knowledge

Data partition and name of global subregions. Each subregion is named based on the latitude line to the south and the longitude line to the west of its extent, with a longitude span of 90° and a latitude span of 45°. For example, s45e90 represents the region with a longitude range between 90°E and 180°E and a latitude range between 45°S and 0°.