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biogenic components
Chukchi Sea
2
bottom sediments
2
recent sedimentation rates
2
Western Arctic Ocean
1
activities of 137Cs and 210Pb
1
grain size
1
grain size distribution
1
magnetic susceptibility
1
pollen
1
surface productivity
1
surface sediments
1
water mass
1
北冰洋西部
1
水团
1
生源组分
1
表层沉积物
1
表层生产力
1
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