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首页> 外文期刊>Environmental Science & Technology >Constraining the Spatial Extent of Marine Oil Snow Sedimentation and Flocculent Accumulation Following the Deepwater Horizon Event Using an Excess 210Pb Flux Approach
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Constraining the Spatial Extent of Marine Oil Snow Sedimentation and Flocculent Accumulation Following the Deepwater Horizon Event Using an Excess 210Pb Flux Approach

机译：使用过量210Pb通量方法限制深水地平线事件后海洋油雪沉淀和絮凝剂积累的空间范围

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摘要

Following the Deepwater Horizon (DWH) event in 2010, there were several lines of evidence indicating the presence of marine oil snow sedimentation and flocculent accumulation (MOSSFA). A significant amount of marine oil snow formed in the water column of the northern Gulf of Mexico (nGoM), settled rapidly, and ultimately accumulated in the sediments of the nGoM. This study utilized a commonly used radioisotope tracer (excess ~(210)Pb, ~(210)Pb_(xs)) from 32 sediment cores collected from 2010 to 2013 to characterize the spatial extent of MOSSFA on the seafloor. Relative to pre-DWH conditions, an increase in ~(210)Pb_(xs) flux occurred in two distinct regions: (1) in the western portion of the study area on an east-northeast to west-southwest axis, stretching 230 km southwest and 140 km northeast of the DWH wellhead, and (2) in the eastern portion of the study area on a 70 km northeast to southwest axis near the DeSoto Canyon. The total sedimentary spatial extent of MOSSFA, as calculated by increased ~(210)Pb_(xs) flux after 2010, ranged from 12 80S to 35 425 km~2.~(210)Pb_(xs) flux provides a valuable tool for documenting the spatial extent of MOSSFA following DWH and will continue to aid in the determination of advective transport and ultimate depocenters of MOSSFA material.
机译：在2010年的“深水地平线”事件之后，有几条证据表明存在海洋油雪沉淀和絮凝剂堆积（MOSSFA）。在墨西哥湾北部（nGoM）的水柱中形成了大量的海洋油雪，它们迅速沉降并最终积聚在nGoM的沉积物中。这项研究利用了从2010年至2013年收集的32个沉积物岩心中常用的放射性同位素示踪剂（过量〜（210）Pb，〜（210）Pb_（xs））来表征海底MOSSFA的空间范围。相对于DWH之前的条件，〜（210）Pb_（xs）通量的增加发生在两个不同的区域：（1）在研究区的西部，东西向西南轴延伸230 km DWH井口的西南方和东北方140 km，以及（2）在研究区域的东部，在DeSoto峡谷东北方至西南轴70 km处。通过增加2010年以后〜（210）Pb_（xs）通量计算得出的MOSSFA总沉积空间范围为12 80S至35 425 km〜2.〜（210）Pb_（xs）通量提供了有价值的记录工具MOSSFA在DWH之后的空间范围，并将继续帮助确定MOSSFA材料的平流运移和最终沉积中心。

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  • 来源
    《Environmental Science & Technology》 |2017年第11期|5962-5968|共7页
  • 作者

    P. T. Schwing; G. R. Brooks; R. A. Larson; C. W. Holmes; B. J. OMalley; D. J. Hollander;

  • 作者单位

    University of South Florida, College of Marine Science, 140 7th Avenue South, Saint Petersburg, Florida 33701, United States;

    Eckerd College, 4200 54th Avenue South, Saint Petersburg, Florida 33711, United States;

    University of South Florida, College of Marine Science, 140 7th Avenue South, Saint Petersburg, Florida 33701, United States,Eckerd College, 4200 54th Avenue South, Saint Petersburg, Florida 33711, United States;

    Environchron, 3988 Emerald Chase Drive, Tallahassee, Florida 32308, United States;

    University of South Florida, College of Marine Science, 140 7th Avenue South, Saint Petersburg, Florida 33701, United States;

    University of South Florida, College of Marine Science, 140 7th Avenue South, Saint Petersburg, Florida 33701, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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