| 基于多星融合高度计数据的中国海波浪能资源评估 |
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| 作者姓名： | WAN Yong ZHANG Jie MENG Junmin WANG Jing |
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| 作者单位： | College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China,First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China |
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| 基金项目： | The Ocean Renewable Energy Special Fund Project of the State Oceanic Administration of China under contract No.GHME2011ZC07;the Dragon Ⅲ Project of the European Space Agency and Ministry of Science and Technology of China under contract No.10412 |
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| 摘 要： | Wave energy resources are abundant in both offshore and nearshore areas of the China's seas. A reliable assessment of the wave energy resources must be performed before they can be exploited. First, for a water depth in offshore waters of China, a parameterized wave power density model that considers the effects of the water depth is introduced to improve the calculating accuracy of the wave power density. Second, wave heights and wind speeds on the surface of the China's seas are retrieved from an AVISO multi-satellite altimeter data set for the period from 2009 to 2013. Three mean wave period inversion models are developed and used to calculate the wave energy period. Third, a practical application value for developing the wave energy is analyzed based on buoy data. Finally, the wave power density is then calculated using the wave field data. Using the distribution of wave power density, the energy level frequency, the time variability indexes, the total wave energy and the distribution of total wave energy density according to a wave state, the offshore wave energy in the China's seas is assessed. The results show that the areas of abundant and stable wave energy are primarily located in the north-central part of the South China Sea, the Luzon Strait, southeast of Taiwan in the China's seas; the wave power density values in these areas are approximately 14.0–18.5 k W/m. The wave energy in the China's seas presents obvious seasonal variations and optimal seasons for a wave energy utilization are in winter and autumn. Except for very coastal waters, in other sea areas in the China's seas, the energy is primarily from the wave state with 0.5 m≤H s≤4 m, 4 s≤T e≤10 s where H s is a significant wave height and T e is an energy period; within this wave state, the wave energy accounts for 80% above of the total wave energy. This characteristic is advantageous to designing wave energy convertors(WECs). The practical application value of the wave energy is higher which can be as an effective supplement for an energy consumption in some areas. The above results are consistent with the wave model which indicates fully that this new microwave remote sensing method altimeter is effective and feasible for the wave energy assessment.
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| 关 键 词： | China’s seas multi-satellite merged altimeter data wave energy resources assessment wave power density |
| 收稿时间： | 2014/6/20 0:00:00 |
| 修稿时间： | 2014/10/11 0:00:00 |
A wave energy resource assessment in the China's seas based on multi-satellite merged radar altimeter data |
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| WAN Yong,ZHANG Jie,MENG Junmin,WANG Jing.A wave energy resource assessment in the China''s seas based on multi-satellite merged radar altimeter data[J].Acta Oceanologica Sinica,2015,34(3):115-124. |
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| Authors: | WAN Yong ZHANG Jie MENG Junmin and WANG Jing |
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| Institution: | 1.College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China2.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China3.College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China |
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| Abstract: | Wave energy resources are abundant in both offshore and nearshore areas of the China's seas. A reliable assessment of the wave energy resources must be performed before they can be exploited. First, for a water depth in offshore waters of China, a parameterized wave power density model that considers the effects of the water depth is introduced to improve the calculating accuracy of the wave power density. Second, wave heights and wind speeds on the surface of the China's seas are retrieved from an AVISO multi-satellite altimeter data set for the period from 2009 to 2013. Three mean wave period inversion models are developed and used to calculate the wave energy period. Third, a practical application value for developing the wave energy is analyzed based on buoy data. Finally, the wave power density is then calculated using the wave field data. Using the distribution of wave power density, the energy level frequency, the time variability indexes, the total wave energy and the distribution of total wave energy density according to a wave state, the offshore wave energy in the China's seas is assessed. The results show that the areas of abundant and stable wave energy are primarily located in the north-central part of the South China Sea, the Luzon Strait, southeast of Taiwan in the China's seas; the wave power density values in these areas are approximately 14.0-18.5 kW/m. The wave energy in the China's seas presents obvious seasonal variations and optimal seasons for a wave energy utilization are in winter and autumn. Except for very coastal waters, in other sea areas in the China's seas, the energy is primarily from the wave state with 0.5 m≤Hs≤4 m, 4 s≤Te≤10 s where Hs is a significant wave height and Te is an energy period; within this wave state, the wave energy accounts for 80% above of the total wave energy. This characteristic is advantageous to designing wave energy convertors (WECs). The practical application value of the wave energy is higher which can be as an effective supplement for an energy consumption in some areas. The above results are consistent with the wave model which indicates fully that this new microwave remote sensing method altimeter is effective and feasible for the wave energy assessment. |
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| Keywords: | China's seas multi-satellite merged altimeter data wave energy resources assessment wave power density |
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