Gulf stream marine hydrokinetic energy resource characterization off Cape Hatteras, North Carolina USA
Gulf stream marine hydrokinetic energy resource characterization off Cape Hatteras, North Carolina USA
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美国北卡罗来纳州哈特拉斯角湾流海洋流体动力学能源特征
作者：
R. He;J. Bane;M. Muglia;S. Haines;C. Lowcher;Y. Gong;P. Taylor
美国北卡罗来纳州 (NC) 附近的湾流当前速度接近 2 ms-1，哈特拉斯角的平均输送量为 90 Sv (1 Sv= 106 m3s-1)，使其成为该州最丰富的 MHK（海洋流体动能）资源。特定位置的资源可用性主要取决于墨西哥湾流位置的变化，在墨西哥湾流离开佛罗里达海峡后，墨西哥湾流在哈特拉斯角的近海位置最少。靠近陆地且陆架斜坡上相对较浅的水域中的高流速使其成为量化北卡罗来纳州 MHK 能源资源的最佳位置。从 2013 年 8 月开始，在能源提取最佳位置的系泊 150 kHz ADCP 进行了多年一致的水流测量，量化了可用能源及其变化性，并建立了区域海洋环流模型预测 MHK 能源资源的技能。该模型与长期观察到的海流平均值以及海流每周到每月的波动非常吻合。该模型与 ADCP 观测到的电流和功率密度之间的比较表明，湾流功率密度存在显着的年际变化。
The Gulf Stream off North Carolina (NC), USA has current velocities that approach 2 ms-1 and average volume transports of 90 Sv (1 Sv= 106 m3s-1) off of Cape Hatteras, making it the most abundant MHK (Marine Hydrokinetic Energy) resource for the state. Resource availability at a specified location depends primarily on the variability in Gulf Stream position, which is least offshore of Cape Hatteras after the stream exits the Florida Straits. Proximity to land and high current velocities in relatively shallow waters on the shelf slope make this an optimal location to quantify the MHK energy resource for NC. Multi-years of consistent current measurements beginning in August of 2013 from a moored 150 kHz ADCP at an optimal location for energy extraction quantify the available energy resource and its variability, and establish the skill of a regional ocean circulation model in predicting the MHK energy resource. The model agrees well with long term observed current averages and weekly to monthly fluctuations in the currents. Comparisons between the model and ADCP observed currents, and power density demonstrate the significant inter-annual variability in the Gulf Stream power density.