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首页> 外文期刊>Journal of Asian earth sciences >Detecting surface oil slick related to gas hydrate/petroleum on the ocean bed of South China Sea by ENVI/ASAR radar data
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Detecting surface oil slick related to gas hydrate/petroleum on the ocean bed of South China Sea by ENVI/ASAR radar data

机译：利用ENVI / ASAR雷达数据探测南海海床与天然气水合物/石油有关的表面浮油

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摘要

For exploring the distribution of oil slick related to gas hydrate or petroleum in the northern part of South China Sea and evaluating the potential of ENVI/ASAR radar data for detecting oil slick, this paper tries to detect the oil slick on ocean surface of some potential areas in South China Sea and map oil slick from anomaly area in radar image. Seven surface oil slicks in Qiongdongnan Basin and four potential targets of oil slicks in Taixi-Dongsha Basin were detected and extracted by using ENIV/ASAR data. The anomalies of the radar image representing oil slick are validated by in-site sampling and laboratory analyzing. The Gas Chromatograph (GC) results of the extracted oil from the water samples gathered from the sites of detected oil slick demonstrate a typical composition of oil rather than that of ocean microbial origins, and Total Organic Carbon (TOC) concentrations in two designed vertical profiles keep steady in different depths, showing that the organic contents in water column are steady from the deep area to ocean surface. These results suggest the detected oil slick is a thin floating oil rather than a thick spill. Influencing factors to the results of oil slick detection including wind speed, current, small islands and capes as well as deep-sea petroleum reservoirs are discussed. The results in this study exhibit that extracting the anomaly signals related to oil slick related to oil/gas seeps using image processing techniques from ENVI/ASAR data is helpful to predict anomaly areas as potential targets for further exploration in this area.
机译：为了探索南海北部与天然气水合物或石油有关的浮油的分布，并评估ENVI / ASAR雷达数据在检测浮油方面的潜力，本文试图在某些潜在的海洋表面上检测浮油。南海海域和雷达图像中异常区域的浮油图。利用ENIV / ASAR数据检测并提取了琼东南盆地的7个表层浮油和泰西-东沙盆地的4个潜在浮油目标。通过现场采样和实验室分析验证了代表浮油的雷达图像异常。气相色谱仪（GC）从从发现的浮油部位收集的水样中提取的油的结果表明，油的典型成分而不是海洋微生物来源的成分以及两种设计的垂直剖面中的总有机碳（TOC）浓度在不同深度保持稳定，表明水柱中的有机物从深处到海洋表面都是稳定的。这些结果表明，检测到的浮油是稀薄的浮动油，而不是浓稠的溢油。讨论了影响浮油检测结果的因素，包括风速，洋流，小岛和海角以及深海石油储层。这项研究的结果表明，使用图像处理技术从ENVI / ASAR数据中提取与油气渗漏有关的浮油异常信号，有助于预测异常区域，作为该区域进一步勘探的潜在目标。

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  • 来源
    《Journal of Asian earth sciences》 |2013年第25期|21-26|共6页
  • 作者

    Yunpeng Wang; Duofu Chen; Zhiguang Song;

  • 作者单位

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Wushan 510640, China,P.O. Box 1131, Guangzhou, Wushan 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Wushan 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Wushan 510640, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oil slick; ENVI/ASAR; remote sensing; cas hydrate; oil gas; south china sea;

    机译：浮油;ENVI / ASAR;遥感;水合cas石油气南中国海;

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