Abstract
In order to study the distribution of total iron and manganese in Urado Bay the authors made determinations of these elements.
The quantity of total iron in sea water ranges from 0.2 to 15.9 microgram atoms per liter, and that of manganese from 0.2 to 6.2 microgram atoms per liter.
It was discovered that these two elements are contained in larger quantities in bottom water which has been affected by the bottom mud, and that their distribution in bottom water varies with the topographical features of the sea floor.
These findings lead the authors to presume that iron and manganese are highly con-centrated near the “shiome, ” or current rips.
