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首页> 外文期刊>Journal of Asian earth sciences >Impact on the coral reefs at Yongle Atoll, Xisha Islands, South China Sea from a strong typhoon direct sweep: Wutip, September 2013
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Impact on the coral reefs at Yongle Atoll, Xisha Islands, South China Sea from a strong typhoon direct sweep: Wutip, September 2013

机译：强台风直接扫荡对南海西沙群岛永乐环礁的珊瑚礁的影响：2013年9月，乌蒂普

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摘要

Relatively little is known about the extent and distribution of damage to coral reefs by typhoons in the South China Sea, especially in remote reefs where typhoons occur frequently. A strong Typhoon, Wutip (JTWC Category 3), directly struck the Yongle Atoll on 29 September 2013, causing 62 deaths and sinking dozens of ships in the Yongle Atoll maritime area, Xisha Islands, South China Sea. Surveys on coral reefs at Yongle Atoll were conducted using scuba diving before (July 2013) and after (8 days) the typhoon sweep. The results show that the effects of Wutip on coral reefs were patchy as a result of varying coral reef geo-morphology and depth. The typhoon caused significant damage to reef associated depths on the passage of the atoll, where currents generated by the typhoon produced the strongest energy. Coral destruction was most spectacular at the 2 m depth (46% living scleractinian corals were damaged). At 6 m and 15 m depths, damage to the coral reefs were minimal. The shallow fore-reef area on the steep slopes, the upper region of the outer slopes with depths between 2 and 6 m, were the principal zones of the typhoon effect. However, the vertical part of the steep slopes were mainly damaged indirectly waves rolling boulders or corals, which were less severely affected than the shallow fore-reef steep slope area. On the low angle slopes, the correlation between the typhoon damage to coral reefs and depth was low because the wave and current energy induced by the typhoon were homogenously attenuated along gentle slopes. Under the stress of global warming, destructive damage to coral reefs on the Xisha Islands is expected to increase, and will require frequent monitoring to determine trends in the near future. (c)) 2015 Elsevier Ltd. All rights reserved.
机译：在南海，特别是在台风频繁发生的偏远珊瑚礁，人们对台风对珊瑚礁的破坏程度和分布知之甚少。 2013年9月29日，强烈的台风“乌提普”（JTWC第3类）直接袭击了永乐环礁，在南海西沙群岛的永乐环礁海域造成62人死亡，沉没数十艘船。在台风吹扫之前（2013年7月）和之后（8天），使用水肺潜水对永乐环礁的珊瑚礁进行了调查。结果表明，由于不同的珊瑚礁地貌和深度，Wutip对珊瑚礁的影响是零散的。台风对环礁通道上与珊瑚礁相关的深度造成了严重破坏，在台风中，台风产生的电流产生了最强的能量。在2 m深度处，珊瑚破坏最为明显（46％的巩膜活珊瑚被破坏）。在6 m和15 m的深度处，对珊瑚礁的破坏最小。陡坡上的浅礁区区域，外坡的上部区域（深度在2至6 m之间）是台风效应的主要区域。但是，陡坡的垂直部分主要受到波浪巨石或珊瑚的间接破坏，与浅礁陡坡相比，受到的影响较小。在低角度的斜坡上，台风对珊瑚礁的损害与深度之间的相关性较低，因为台风引起的波能和电流能沿缓坡均匀地衰减。在全球变暖的压力下，对西沙群岛上珊瑚礁的破坏性破坏预计会增加，并且需要经常监测以确定近期趋势。 （c））2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Journal of Asian earth sciences》 |2015年第3期|457-466|共10页
  • 作者

    Yang Hongqiang; Yu Kefu; Zhao Meixia; Shi Qi; Tao Shichen; Yan Hongqiang; Chen Tianran; Liu Guohui;

  • 作者单位

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Guangxi Univ, Coral Reef Res Ctr China, Nanning 530004, Peoples R China|Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Typhoon Wutip; Coral reefs; Yongle Atoll; Xisha Islands;

    机译：typhoon W UT IP;coral reefs;Yong了atoll;ξ啥islands;

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