Table 2.

The results on the concentration, isotopic composition and inventory of U isotope and ¹³⁷Cs in bottom sediments in the Japan Sea.

Depth	Anal. sediments	Dry bulk sediments	236U/238U	236U concentration	236U inventory	137Cs concentration	137Cs inventory
(cm)	(g)	(g)	(10−9 atom ratio)	(107 atom/g)	(1010 atom/m2)	(Bq/g)	(Bq/m2)
0–1	3.43	6.61	9.63±1.35	4.86±0.76	5.06±0.79	0.017±0.001	10.9±0.90
1–2	3.61	7.41	8.70±0.65	4.41±0.39	5.14±0.46	0.020±0.001	15.1±1.11
2–3	3.99	10.48	1.11±0.69	0.59±0.37	0.97±0.61	0.006±0.0008	5.53±0.69
3–4	3.91	10.75	2.87±0.61	1.67±0.37	2.82±0.63	0.004±0.0007	4.35±0.76
4–5	3.96	11.69	0.55±0.16	0.36±0.11	0.66±0.20	0.001±0.0006	0.93±0.70
Total					15.0±1.3		36.8±1.9