Impacts of tropical cyclones and anthropogenic activities on marine vanadium: A unique perspective from high resolution Porites coral record  

作　　者：Wei JIANG Xingyuan WU Kefu YU Haodan YANG Shendong XU Ning WANG Yangyang YONG Yinan SUN Chaoshuai WEI Yinghui WANG 

机构地区：[1]Guangxi Laboratory on the Study of Coral Reefs in the South China Sea/Coral Reef Research Center of China/School of Marine Sciences,Guangxi University,Nanning 530004,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519080,China

出　　处：《Science China Earth Sciences》2022年第12期2285-2296,共12页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.42030502,41976059 and 42090041);the Guangxi Natural Science Foundation(Grant No.2019GXNSFAA185022);the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(Grant No.311019006/311020006).

摘　　要：As a typical contaminant in fossil fuels,vanadium has undergone dramatically increase due to the impacts from human activities.The excessive anthropogenic vanadium emissions have altered natural geochemical processes.However,research on vanadium geochemistry in the ocean,which is the major sink for vanadium mobilized on land,has lagged much behind relative to those of other contaminants.Here we reconstruct historical patterns of vanadium in surface seawater utilizing a high-resolution temporal record(1984–2015 CE)of geochemical proxies(vanadium/calcium(V/Ca),δ^(18)O,δ^(13)C,etc.)in a Porites coral colony from an offshore non-estuarine island in the northern South China Sea(SCS).We find a close association between the surface winds and the temporal patterns of coral V/Ca ratios,revealing great potential for documenting prehistoric changes in tropical cyclones.Moreover,the coral V/Ca record remarkably captured the temporal patterns of anthropogenic activities,offering a valuable and novel tool for testing the efficacy of specific legislation on pollution prevention.Combined with the other reported coral vanadium data,we recovered the historical changes in vanadium emissions in the northern SCS and identified that changing industrial practices should be responsible for the differences in anthropogenic vanadium emissions at each stage.Our results demonstrated that the coral V/Ca ratio at a high temporal resolution has great potential as a new and direct geochemical proxy for tropical cyclones after removing artificial disturbances in the ocean.

关 键 词：VANADIUM CORAL Tropical Cyclones Oil spill Weizhou Island Northern South China Sea 

分 类 号：P73[天文地球—海洋科学]