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首页> 外文学位 >Marine debris as an indicator of oil spill vulnerability along selected beaches of northern Placentia Bay, Newfoundland and Labrador.
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Marine debris as an indicator of oil spill vulnerability along selected beaches of northern Placentia Bay, Newfoundland and Labrador.

机译：海洋碎片是在普拉圣西亚湾，纽芬兰和拉布拉多北部选定海滩沿线石油泄漏脆弱性的指标。

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摘要

This study investigated the morphological, sedimentological, energy regime, and marine debris characteristics of 4 beaches at the head of Placentia Bay, Newfoundland and Labrador. Differing morphological, sedimentological and energy regime conditions alter the sensitivity of each system to oil spill contamination. Differences in the type and amount of marine debris between each system alter the potential risk of exposure to oil spill contamination. Based on differences in sensitivity and exposure, a vulnerability assessment was created for each system. This system was applied to an additional 5 beaches to demonstrate the applicability of the method and to highlight the actual vulnerability of each study beach relative to the spectrum of beaches actually present throughout Placentia Bay.;Differing types and quantities of marine debris indicate that each beach, with the exception of Goose Cove, would likely be exposed to oil originating from a Placentia Bay spill. The heaviest quantities would be expected at Hollett's Cove and Arnold's Cove. Based on these factors, Arnold's Cove and Come by Chance are considered the most vulnerable beaches to oil contamination. Hollett's Cove and Goose Cove are considered the least vulnerable respectively. Applying the vulnerability assessment to additional 5 beaches revealed that the 4 study beaches rank moderately to highly vulnerable to oil spill contamination.;Typical of the majority of beaches throughout Placentia Bay, the 4 study beaches are characterized by gravel dominated, reflective, moderate to high energy systems. Observations of sediment re-working and accretionary features along the beaches of Arnold's Cove and Come by Chance indicate that self-cleaning would not be an effective agent of oil removal in the case of a spill. The absence of sediment re-working and protected nature of Goose Cove beach suggest that oil would persist in this environment for an extended period of time. Evidence of high wave energies at Hollett's Cove indicates that this beach would self-clean effectively.
机译：这项研究调查了在纽芬兰和拉布拉多的Placentia湾顶部的4个海滩的形态，沉积学，能量状况和海洋垃圾特征。不同的形态，沉积学和能效条件会改变每个系统对溢油污染的敏感性。每个系统之间海洋垃圾的类型和数量的差异会改变暴露于漏油污染的潜在风险。根据敏感度和暴露程度的差异，为每个系统创建了一个漏洞评估。该系统被用于另外5个海滩，以证明该方法的适用性并强调每个研究海滩相对于整个Placentia海湾实际存在的海滩光谱的实际脆弱性;不同类型和数量的海洋垃圾表明每个海滩除鹅湾外，很可能会暴露于来自胎盘湾泄漏的石油。预计霍莱特湾和阿诺德湾的运输量最大。基于这些因素，Arnold's Cove和Come by Chance被认为是最容易受到石油污染的海滩。 Hollett's Cove和Goose Cove分别被认为是最不脆弱的。对另外5个海滩进行脆弱性评估后发现，这4个研究海滩的等级中等至高度易受溢油污染的影响;典型地，在整个Placentia湾的大多数海滩中，这4个研究海滩的特征是砾石为主，反射性，中度至高度能源系统。在Arnold's Cove海滩和Come by Chance海滩上观察到的沉积物再加工和增生特征表明，在发生泄漏的情况下，自清洁不会成为除油的有效手段。由于没有沉积物再加工和鹅湾海滩受保护的性质，这表明石油将在这种环境中持续较长时间。 Hollett's Cove的高波能证据表明，该海滩将有效地自我清洁。

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  • 作者

    McNeil, Mark.;

  • 作者单位

    Memorial University of Newfoundland (Canada).;

  • 授予单位 Memorial University of Newfoundland (Canada).;
  • 学科 Geography.;Environmental Sciences.
  • 学位 M.Sc.
  • 年度 2009
  • 页码 122 p.
  • 总页数 122
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 普通生物学;
  • 关键词

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