| 春季西南黄海与绿潮相关的物理环境特征 |
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| 引用本文： | 鲍敏,管卫兵,王宗灵,王迪峰,曹振轶,陈琪.春季西南黄海与绿潮相关的物理环境特征[J].海洋学报(英文版),2015,34(7):97-104. |
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| 作者姓名： | 鲍敏 管卫兵 王宗灵 王迪峰 曹振轶 陈琪 |
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| 作者单位： | 卫星海洋环境动力学国家重点实验室, 国家海洋局第二海洋研究所, 杭州310012, 中国,卫星海洋环境动力学国家重点实验室, 国家海洋局第二海洋研究所, 杭州310012, 中国;物理海洋研究所, 浙江大学海洋学院, 杭州 310058, 中国,国家海洋局第一海洋研究所, 青岛 266061, 中国,卫星海洋环境动力学国家重点实验室, 国家海洋局第二海洋研究所, 杭州310012, 中国,卫星海洋环境动力学国家重点实验室, 国家海洋局第二海洋研究所, 杭州310012, 中国,卫星海洋环境动力学国家重点实验室, 国家海洋局第二海洋研究所, 杭州310012, 中国 |
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| 基金项目： | The National Basic Research Program of China under contract No.2010CB428704，the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11020304，the National Natural Science Foundation of China under contract No.41276083，the Scientific Research Fund of the Second Institute of Oceanography of the State Oceanic Administration of China under contract No. JG1415 |
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| 摘 要： | Massive green tides caused by Ulva prolifera in the Yellow Sea have occurred every summer since 2007 and have caused huge economic losses for local governments. The Subei(North Jiangsu Province, China) Shoal, with its large-scale Porphyra aquaculture, has been regarded as the most important source of U. prolifera for green tides.To reveal the physical mechanisms of floating and drifting algae in this area, the characteristics of the current, the temperature, the salinity and suspended particulate matter(SPM) in the southwestern Yellow Sea, especially in the Subei Shoal, were studied. The topography of the radial sand ridges in the Subei Shoal constrains the features of the currents and causes net longitudinal and latitudinal movements. The longitudinal net movement is a dominant dynamic factor that can bring U. prolifera into offshore waters. The amount of gas that is produced by algae during photosynthesis determines whether U. prolifera can float well on the sea surface after it is disposed into the water from Porphyra aquacultural apparatus. The Subei Shoal is characterized by a high turbidity, which can result in significant light attenuation and affect the photosynthesis together with the buoyancy of a U.prolifera in the water. According to satellite remote sensing data from 2012, the three-month-averaged surface SPM(April, May and June) in the Subei Shoal was 140 mg/dm3, and the north of the Subei Shoal(the north of34.5°N), it was 11 mg/dm3. According to the monthly averaged surface SPM in April, the transparency in the Subei Shoal was only 0.1 m, but it often exceeded 2.0 m outside of the Subei Shoal. The results explain why the floating ability of U. prolifera increases significantly once the green algae drifted outside the Subei Shoal.
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| 关 键 词： | 浒苔 流 温度 盐度 悬浮物质 |
| 收稿时间： | 2015/3/30 0:00:00 |
| 修稿时间： | 2015/4/16 0:00:00 |
Features of the physical environment associated with green tide in the southwestern Yellow Sea during spring |
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| BAO Min,GUAN Weibing,WANG Zongling,WANG Difeng,CAO Zhenyi and CHEN Qi.Features of the physical environment associated with green tide in the southwestern Yellow Sea during spring[J].Acta Oceanologica Sinica,2015,34(7):97-104. |
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| Authors: | BAO Min GUAN Weibing WANG Zongling WANG Difeng CAO Zhenyi and CHEN Qi |
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| Institution: | 1.State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Institute of Physical Oceanography, Ocean College, Zhejiang University, Hangzhou 310058, China3.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | Massive green tides caused by Ulva prolifera in the Yellow Sea have occurred every summer since 2007 and have caused huge economic losses for local governments. The Subei (North Jiangsu Province, China) Shoal, with its large-scale Porphyra aquaculture, has been regarded as the most important source of U. prolifera for green tides. To reveal the physical mechanisms of floating and drifting algae in this area, the characteristics of the current, the temperature, the salinity and suspended particulate matter (SPM) in the southwestern Yellow Sea, especially in the Subei Shoal, were studied. The topography of the radial sand ridges in the Subei Shoal constrains the features of the currents and causes net longitudinal and latitudinal movements. The longitudinal net movement is a dominant dynamic factor that can bring U. prolifera into offshore waters. The amount of gas that is produced by algae during photosynthesis determines whether U. prolifera can float well on the sea surface after it is disposed into the water from Porphyra aquacultural apparatus. The Subei Shoal is characterized by a high turbidity, which can result in significant light attenuation and affect the photosynthesis together with the buoyancy of a U. prolifera in the water. According to satellite remote sensing data from 2012, the three-month-averaged surface SPM (April, May and June) in the Subei Shoal was 140 mg/dm3, and the north of the Subei Shoal (the north of 34.5°N), it was 11 mg/dm3. According to the monthly averaged surface SPM in April, the transparency in the Subei Shoal was only 0.1 m, but it often exceeded 2.0 m outside of the Subei Shoal. The results explain why the floating ability of U. prolifera increases significantly once the green algae drifted outside the Subei Shoal. |
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| Keywords: | Ulva prolifera current temperature salinity suspended particulate matter |
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