Redox environment effect on redox sensitive elements in surface sediments of the Changjiang Estuary hypoxia zone |
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| Authors: | Shumei XU Shikui ZHAI Aibin ZHANG Huaijing ZHANG Haijian LU |
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| Institution: | (1) College of Marine Geo-science, Ocean University of China, Qingdao, 266100, China |
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| Abstract: | The grain size and element (including redox sensitive elements and terrigenous elements) concentration of surface sediments
from the Changjiang Estuary hypoxia zone and its adjacent sea area were measured in this research. Based on the obtained data,
the hypoxic environment’s influence on the distribution of elements in surface sediments was further studied. We believe that
the “redox environment effect” greatly influences the distribution of the RSE, which reveals the “patchy enrichment pattern”
offshore in the hypoxia zone, while the distribution of the terrigenous elements which shows the “stripped enrichment pattern”
near shore is mainly affected by “granularity effects”. Due to the existence of the hypoxia zone of the Changjiang Estuary,
the distribution of the RSE such as Mo, Cd and V in the study area exhibits the characteristics of “redox environment effects”.
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Translated from Marine Geology & Quaternary Geology, 2007, 27(3):1–8 译自: 海洋地质与第四纪地质] |
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| Keywords: | redox sensitive element (RSE) redox environment terrigenous element grain size effect the Changjiang Estuary hypoxia zone |
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