Total dissolvable iron and manganese concentrations in water just above sediments recovered from the central Okhotsk Sea

Abstract

    Eight multiple cores were collected from the central Okhotsk Sea for a measurement of concentrations of iron and manganese in the sea water just above sediments. Dissolved oxygen(DO), pH, and concentrations of iron and manganese were measured. Relatively high values of total dissolvable iron were recognized at some sites. There is a negative relationship between DO and total dissolvable iron concentration. This suggests that the interface between sea water and sediments were in uenced by relatively reduced condition and iron ion was likely to be eluted from the sediments at these sites.