Notation	Name	Description	Status
basins	within basins	A depression of the sea floor more or less equidimensional in...	stable
guyots	within guyots	An undersea mountain having a comparatively smooth flat top. ...	stable
hills	within hills	Medium relief (differences 250-1000 m within 5-10 km range) o...	stable
hollows	within hollows	Low relief (differences 30-250 m within 5-10 km range) on lan...	stable
inapplicable	inapplicable	None of the codes in the table are applicable in the context ...	stable
mountains	within mountains	High relief (differences > 1000 m within 5-10 km range) on la...	stable
plains	within plains	Very low relief (differences <30 m within 5-10 km range) on l...	stable
ridges	within ridges	A long, narrow elevation with steep sides; or: A long, narrow...	stable
rises	within rises	Low relief (differences 30-250 m within 5-10 km range) on lan...	stable
seaMounts	within sea mounts	An isolated or comparatively isolated elevation rising 1 000 ...	stable
trenches	within trenches	A long, narrow and deep depression of the sea floor with rela...	stable
unknown	unknown	The topographic context is unknown.	stable
valleys	within valleys	Medium relief (differences 250-1000 m within 5-10 km range) o...	stable