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| 1 | Analytical estimation of mixing coefficient induced by surface wave-generated turbulence based on the equilibrium solution of the second-order turbulence closure model显示文摘Based on the equations of motion and the assumption that ocean turbulence is of isotropy or quasi-isotropy, we derived the closure equations of the second-order moments and the variation equations for characteristic quantities, which describe the mechanisms of advection transport and shear instability by the sum of wave-like and eddy-like motions and circulation. Given that ocean turbulence generated by wave breaking is dominant at the ocean surface, we presented the boundary conditions of the turbulence kinetic energy and its dissipation rate, which are determined by energy loss from wave breaking and entrainment depth respectively. According to the equilibrium solution of the variation equations and available data of the dissipation rate, we obtained an analytical estimation of the characteristic quantities of surface-wave-generated turbulence in the upper ocean and its related mixing coefficient. The derived kinetic dissipation rate was validated by field measurements qualitatively and quantitatively, and the mixing coefficient had fairly good consistency with previous results based on the Prandtl mixing length theory. | YUAN YeLi QIAO FangLi YIN XunQiang HAN Lei | 2013 | Science China Earth Sciences2013，56，1： | 7 |
| 2 | 基于二阶矩闭合模式平衡解的海浪生湍流混合系数解析估计显示文摘从次小尺度海洋运动方程和运动近各向同性假定出发,本文给出高确定性的海洋湍流二阶矩闭合方程和特征量变化方程.这组方程描述波动、涡旋和环流等较大尺度运动对海洋湍流的剪切不稳定性生成机制.同时,基于海浪破碎是湍流海面生成主要机制的认识,本文按破碎海浪统计理论给出湍流特征量变化方程的海面边界条件,包括由破碎能量损耗和卷入深度分别确定的海面动能通量和动能耗散率.根据上层海洋湍流特征量方程的平衡解和关于动能耗散率的观测资料,本文得到海浪生湍流混合系数的解析估计.所得到的海浪生湍流动能耗散率与观测资料进行了定性与定量对比,混合系数与先前Prandtl混合长度理论估计的一致性检验. | 袁业立 乔方利 尹训强 韩磊 卢铭 | 2013 | 中国科学:地球科学2013，43，2： | 2 |
| 3 | 江苏响水近海风电场对海洋水动力影响的数值模拟显示文摘为研究近海风电场对海洋水动力条件的影响,建立和验证了风电场二维潮流数学模型,根据风电场区的地形条件对模型范围及网格划分进行了探讨,分析风电场实施前后水动力条件的变化。根据风机桩基基础形式,在模型中对桩基进行合理概化。研究结果表明:模型计算值与实测值拟合较好,可用来预测风电场建设对附近海域水动力的影响;风电场位于江苏近海海域,随潮涨潮落,桩基基础有一定阻水作用,但不会形成桩群效应;利用等效面积法将风机桩基概化为不透水单元,能较好地模拟桩基对潮流的影响;风电场的实施对周围海域的流速、流向、潮位等水动力条件影响很小,影响主要在风机桩基附近。 | 祁昌军 吴王燕 蒋欣慰 王庆改 | 2014 | 中国港湾建设2014，34，4： | 1 |
| 4 | Mechanism of sea ice formation based on comprehensive observation data in Liaodong Bay, China显示文摘Sea ice disaster is one of the principal natural hazards that affect some coastal areas of China,and the formation of ice cover in a wave field has important characteristics.However,analysis of the mechanism in which waves affect the thermodynamic process of sea ice is lacking,and the influence of waves is not taken into consideration in numerical models of sea ice,largely because of a lack of simultaneous observations of waves and sea ice.Using observational data of the sea ice cycle in the coastal waters of Liaodong Bay(China),we analyzed the characteristics of hydrology,meteorology,and sea ice thickness during the formation of sea ice,and explored the changes in the interrelationships among heat fluxes,waves,and sea ice under actual sea conditions.The results could provide a decision-making support as a reference to the establishment and improvement of China's early waming system to sea ice disasters,and the protection of ice drilling operations and production platform safety. | SHI Yongfang YANG Yongzeng TENG Yong SUN Meng YUN Shengjun | 2019 | Journal of Oceanology and Limnology2019，37，6： | 1 |
| 5 | 大洋涌浪耗散研究及模式应用的进展及主要问题显示文摘大洋中涌浪普遍存在且对大气-海洋之间的物理过程有较大影响,但目前对涌浪的耗散过程研究尚不充分。总结了关于涌浪传播和耗散的观测事实,着重指出利用遥感数据推进相关研究的可能性;同时分析可能的物理机制,并论述其在海浪模式中的应用及不足。通过梳理大洋涌浪耗散的研究进展,为今后开展涌浪相关研究提供依据。 | 毕凡 宋金宝 | 2016 | 海洋科学2016，40，9： | 1 |
| 6 | Study on surface wave-induced mixing of transport flux residue under typhoon conditions显示文摘The transport flux residue of surface waves plays an important role in a variety of ocean phenomena,for example,the change in sea surface temperature(SST)and upper mixed layer profile that were studied in a series of recent papers.In the previous studies,its effect was discussed rigorously and fragmented based on numerical modeling.Here we propose a relatively comprehensive and simplified exposition of the wave transport flux residue,and focus on its influence under typhoon conditions with strong background current.An analogue Reynolds Number is presented for tentative comparison with wave-generated turbulence mixing,especially in the coastal area.Numerical results indicate that both overwhelming dynamical mixing processes can remarkably change the coastal environment,and should not be ignored consciously for further marine hazards assessment. | YANG Yongzeng SHI Yongfang YU Chencheng TENG Yong SUN Meng | 2019 | Journal of Oceanology and Limnology2019，37，6： | 1 |
| 7 | 集合平均方法的建立及海洋动力系统耦合作用的性质分析显示文摘不同海洋动力过程之间的相互作用决定了海洋系统内部的结构,外观表征上则反映了海洋动力要素的空间及剖面精细化分布与演变特征,海洋动力系统相互作用理论愈来愈成为支撑海洋耦合数值模式与数值预报发展的重要基础。不同于Reynolds尺度平均概念,基于局域平稳均匀统计意义下的集合平均可易于实现集合层级和系统划分。在此基础上提出了一种实用的集合平均方法,分析了不同海洋动力过程之间的相互作用机理,包括大尺度动力过程对中、小尺度过程的输运、剪切生成作用,以及后者对前者的混合作用。重点揭示了湍流、波动对涡旋/环流的输运通量剩余量主要分量所起的作用,探讨了波动强剪切生成湍流的能量贡献效应等性质,为海浪-海流耦合实用模块的研发及数据资料处理提供设计方法。 | 杨永增 孙盟 | 2021 | 海洋科学进展2021，39，2： | 0 |
| 8 | 湍流混合输运通量的数学物理描述基础——高确定性闭合的湍流二阶矩和基本特征量控制方程组显示文摘湍流,在海洋动力系统其他类运动的控制方程组中,主要以输运通量剩余项的形式出现,它是最重要的海洋混合运动主体。本文的主要研究目标是,在湍流最新研究成果及其子系统控制方程组基础上,提出高确定性的二阶矩闭合原理,导出闭合的二阶矩和基本特征量控制方程组,建立湍流输运通量的数学物理描述基础。现有的湍流基本特征量方程组,其右端项的闭合办法实际上是非独立的。因此要么在今后的研究中引入独立的闭合办法,要么回归到湍流的现场实验分析研究,给出独立的特征量实验关系,从而有可能得到湍流混合系数的解析估计。 | 袁业立 庄展鹏 杨光兵 | 2017 | 海洋与湖沼2017，48，5： | 0 |
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