管长龙
从事海浪与小尺度海-气相互作用研究。
个性化签名
- 姓名:管长龙
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
物理海洋学
- 研究兴趣:从事海浪与小尺度海-气相互作用研究。
管长龙,教授,博士生导师,1984年7月本科毕业于吉林大学物理系;1987年7月硕士毕业于吉林大学理论物理专业;1992年7月博士毕业于青岛海洋大学物理海洋专业。教授,博士生导师。从事海浪与小尺度海-气相互作用研究。1995-1996在法国国家科研中心(CNRS)地球环境遥感实验室做博士后;2002-2003在美国North Carolina州立大学做高级访问学者。现任物理海洋教育部重点实验室主任,《海洋科学进展》编委。1997-2000任国际船舶与海洋工程大会(ISSC)环境委员。在国内外学术刊物上发表论文40多篇;主持与参加国家科技攻关课题、国家自然科学基金项目、863课题、973课题、山东省重点基金、教育部优秀青年教师基金等10多项省部级以上科研项目;2001年“海浪统计理论与海浪谱研究”获中国高校自然科学一等奖(第2位)。
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605
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成果数
10
管长龙, 张大错, 关世义†
海洋与湖沼,1996,27(2):151~156,-0001,():
-1年11月30日
采用低频分谱和高频分谱叠加的思想,提出了双峰海浪频谱的一种表示。所用的分谱形式为以便十确定的物理量为参数的Neumann型谱形。给出了山实测双峰谱的特征量确定分谱参数的合理途径,解释了以往双峰谱表示中高频部分过高估计的原因并予以解决,最后应用于胶州湾和南海西沙海域的实测谱。
海浪, 双峰谱
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70浏览
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管长龙, 张淑芳, 孙建, 孙群, **
中国海洋大学学报,2004,34(5):704~712,-0001,():
-1年11月30日
对已有根据观测提出的幂函数形式风浪成长关系进行了分析。发现这些风浪成长关系在消去无因次风区后一致地与3/2指数律相协调,尽管它们原来存在较大的不协调性。发现Jeffreys,Sverdrup和Munk以及Plant的风能输入源函数在谱积分意义下具有相似性,而Tsikunov,Hasselmann和Phillips的破波耗散源函数在谱积分意义下也具有相似性,尽管这些源函数的原始形式和物理背景显著地不同。利用有效波能量平衡方程,将3/2指数律和发现的风能输入及破波耗散源函数相似性相结合,提出了深水风浪随风区成长的分式指数律,以得到的分式指数律拟合已有基于观测提出的风浪成长关系提出了半经验的风浪成长关系,与已有观测数据符合。
风浪, 风浪成长, 风区指数律, 风能输入, 能量耗散, 破碎波, 3/, 2指数律
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67浏览
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【期刊论文】分析海浪方向谱的扩展本征矢方法* I. 方法的导出
管长龙, 文圣常, 张大错
海洋与湖沼,1995,26(1):58~62,-0001,():
-1年11月30日
基于交叉谱矩阵可以按本征值划分为信号和含有噪音部分的思想,提出了一种自直接测量数据估计海浪方向谱的方法。该方法称为扩展本征矢方法(EEV),可应用于单点测量系统、仪器阵列以及由二者构成的复合阵列。现有的某些估计方法(如最大似然方法及其扩展形式等)仅是此方法的某种特例。
海浪, 方向谱, 估计方法, 本征矢
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80浏览
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【期刊论文】二阶非线性随机海浪波面高度和波面垂直速度的联合分布木
管长龙
海洋与湖沼,1997,28(5):503~508,-0001,():
-1年11月30日
基于Longuet-Higgins提出的非线性随机海浪模型,在二阶近似下通过直接计算联合分布的各阶矩,导出了非线性海浪波面高度和波面垂直速度的联合分布。该分布为非正态,其形式为截断的级数,而非由累积矩母函数方法可能得到的渐近无穷级数。由于非线性的影响,波面高度与波面垂直速度不再相互独立。
非线性, 波面和波面垂直速, 联合分布, 海浪
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79浏览
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【期刊论文】Statistical distribution of surface elevation for the fourth order nonlinear random sea waves*
管长龙, GUAN Changlong, and SUN Fu
SCIENCE IN CHINA (Series D), 1997, 40(6):605~612,-0001,():
-1年11月30日
Based upon the nonlinear model of random sea waves, the statistical distribution of wave surface elevation exact to the fourth order is derived as the truncated Gram-Charlier series, by calculating directly each order moment. The phenomenon found by Huang et al. that the agreement between observed data and investigated series deteriorates much more when the series is kept to λ8 is explained, The effect of the appmximation order on the truncation of series and the determination of coefficients is investigated. For the mth order approximation, the derived series is truncated at H3m-3 with the absence of H3m-4, and the coefficients of H3m-3 and H3m-6 are connected by a simple algebraic relation.
nonlinearity,, fourth order approximation,, statistical distribution,, sea-wave surface.,
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68浏览
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【期刊论文】Improvement of the WAM Wave Model and Its Application to the Rh6ne River Mouth Area
管长龙, Changlong Guan†‡, Vincent Rey†, and Philippe Forget†
Journal of Coastal Research, Vol. 15, No.4, 1999,-0001,():
-1年11月30日
In this paper the WAM model is improved by considering the radiation stresses due to wave-current interactions in the spectral transport equation. The improved wave model is applied to compute wind waves in the Rhone river mouth area in the Southern France under various steady and homogeneous wind conditions. The aim of this study is to determine the wave conditions involved in the long-term evolution of the shoreline. From the numerical computation results, we can conclude that even for obliquely offshore wind conditions, alongshore waves exist in nearshore area and that the current due to the Rhone discharge has very little effect on the wave characteristics in relatively deep water.
Wave-current interactions,, spectral transport equation,, radiation stresses,, wave dynamics kinematics.,
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44浏览
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【期刊论文】EFFECT OF WATER DEPTH ON WIND-WAVE FREQUENCY SPECTRUM I. SPECTRAL FORM*
管长龙, WEN Sheng-chang, GUAN Changqong, SUN Shi-cai, WU Ke-jian, ZHANG Da-cuo
CHIN. J. OCEANOL. LIMNOL. 1996, 14(2):97~105,-0001,():
-1年11月30日
Wen et al.'s method developed to obtain wind-wave frequeriacy spectrum in deep water was used to derive the spectrum in finite depth water. The spectrum S(ω) (ω being angular frequency) when normalized with the zeroth moment m0 and peak frequency ω0 contains in addition to the peakness factor P=ω0S(ω0)/mo, a depth pararmeter η=(2nmo)1/2/d (d being water depth), so the spectrum behavior can be studied for different wave growth stages and water depths.
wind-wave frequency spectrum,, water depths
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34浏览
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【期刊论文】Analytically Derived Wind Wave Growth Relations*
管长龙, GUAN Changlong, and SUN Qun
China Ocean Engineering, Vol. 16 No.3, pp. 359-368,-0001,():
-1年11月30日
By the use of the 3/2 power law presented by Toba combined with the significant wave energy balance equation for wind wave, wind wave growth at a limited fetch is analytically investigated. The new wind wave growth relations (WWGRs) are analytically derived with sheltering coefficient and wind drag coefficient as parameters. The geometrical average of observational values of sheltering coefficient and the arithmetic average of observational values of wind drag co-efficient are applied to determine the new WWGRs. Comparisons with existing empirical WWGRs are tnade.
wind wave, wind wave growth relation, 3/, 2 power law
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【期刊论文】An Eta-Coordinate Version of the Princeton Ocean Model
管长龙, YIYONG Luo*, CHANGLONG GUAN, and DEXING WU
Journal of Oceanography, Vol. 58 pp. 589 to 597, 2002,-0001,():
-1年11月30日
The Princeton Ocean Model (POM) is widely used in both the research and real-time marine forecast communities. However, there is a single heavily criticized feature and shortcoming of POM, i.e., the pressure gradient (PG) error associated with sloping topography. To overcome this problem, in this paper we present an eta-coordinate POM (ECPOM). The eta-coordinate system was originally adopted in atmospheric numerical models and has proved to be effective in removing the large errors associated with the horizontal pressure gradient force and advection and diffusion terms along a steeply sloping topography. A familiar idealized seamount problem is used to test the PG error in the ECPOM in order to isolate errors from other sources, as is done in the literature. The model is set up so that, ideally, the ocean should be at rest forever; any development of circulation is regarded as numerically artificial. Results show that in ECPOM, errors are dramatically reduced by two orders of magnitude over a wide range of parameters. As a trade-off, the bottom boundary of the ECPOM is a stepwise instead of a continuous one, as in the sigma-coordinate POM (SCPOM). Modification of the SCPOM to the ECPOM is straightforward and minimal. Compared to the z-coordinate model, the ECPOM is numerically simpler since the eta-coordinate has a surface-followlng character.
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管长龙, CHANGLONG GUAN, LIAN XIE
JOURNAL OF PHYSICAL OCEANOGRAPHY, 2004, 34, 202~206,-0001,():
-1年11月30日
Combining the logarithmic law with the Charnock relation yields a drag coefficient that is a function of wind speed with the Charnock coefficient as a parameter. It is found that the function is nearly linear within the typically measured range of the drag coefficient. The slope of the linear function is dominated by the Charnock coefficient. When the Charnock relation is extended to a wave age-dependent function, the drag coefficient remains a near-linear function of wind speed after invoking the 3/2 power law. The slope of the linear function is dominated by wave steepness.
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