Exploration of Deep Ocean Ferromanganese Nodule Fields Using Radon as a Tracer

被引：6

作者：

Guo, Xiaoyi ^{[1
,2
,3
]}

Xu, Bochao ^{[1
,2
]}

Yu, Huaming ^{[4
]}

Burnett, William C. ^{[5
]}

Li, Sanzhong ^{[6
]}

Lian, Ergang ^{[7
]}

Zhu, Zenghui ^{[1
,2
]}

Zhao, Shibin ^{[1
,2
,3
]}

Chen, Guangquan ^{[8
]}

Duan, Xiaoyong ^{[9
]}

Dimova, Natasha ^{[10
]}

Wang, Yanni ^{[4
]}

Zhuang, Guangchao ^{[1
]}

Yu, Zhigang ^{[1
,2
]}

机构：

[1] Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao, Peoples R China

[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China

[3] Ocean Univ China, Coll Chem & Chem Engn, Qingdao, Peoples R China

[4] Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao, Peoples R China

[5] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA

[6] Ocean Univ China, Coll Marine Geosci,Minist Educ, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Peoples R China

[7] Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China

[8] Minist Nat Resources, Inst Oceanol 1, Key Lab Coastal Sci & Integrated Management, Qingdao, Peoples R China

[9] China Geol Survey, Qingdao Inst Marine Geol, Beijing, Peoples R China

[10] Univ Alabama, Coll Arts & Sci, Dept Geol Sci, Tuscaloosa, AL USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2022年 / 49卷 / 22期

基金：

中国国家自然科学基金;

关键词：

SEA SEDIMENTS; RN-222; PB-210; EXCESS; BOTTOM; RATES; BIOTURBATION; ATLANTIC; SURFACE; RADIUM;

D O I：

10.1029/2022GL100726

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Ferromanganese nodules (Fe-Mn nodules) are considered as potential sources of in-demand metals (such as manganese, cobalt, nickel, copper, and rare-earth elements) that are used in high-technology industries. The resource potential of Mn nodules in the world ocean remains uncertain due to technological and financial challenges. Here we propose an effective tracer: the natural radioactive radon isotope (Rn-222) to assess the abundance of Fe-Mn nodules on the sea floor. Significant linear relationships were observed between benthic excess Rn-222 fluxes and concentrations with Fe-Mn nodule occurrence and coverage on the global seafloor. Benthic excess Rn-222 flux >10(7) dpm/m(2)/yr or bottom water Rn-222 concentrations >2,000 dpm/m(3) indicate the possibility of Fe-Mn nodules occurrence at >80% and seabed coverage of >25%. Our results indicate radon, relatively easy to measure, could serve as a novel and efficient tool for targeting Fe-Mn nodule resources in the global abyssal ocean.

引用

页数：8

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