孙孚
长期从事海浪理论与应用研究,在海浪统计理论、海浪非线性与海浪谱方面取得系统的、创造性成就。
个性化签名
- 姓名:孙孚
- 目前身份:
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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:长期从事海浪理论与应用研究,在海浪统计理论、海浪非线性与海浪谱方面取得系统的、创造性成就。
孙孚教授,博士生导师。历任中国海洋大学物理海洋教育部重点实验室主任、海洋环境学院院长,国家自然科学基金委员会学科评议组成员、教育部海洋科学教学指导委员会委员;曾获得全国模范教师、山东省专业技术拔尖人才、国家有突出贡献中青年专家称号,是国务院政府特殊津贴获得者;任《海洋与湖沼》、《海洋学报》等刊物编委,中国地球物理学会理事。孙孚教授长期从事海浪理论与应用研究,在海浪统计理论、海浪非线性与海浪谱方面取得系统的、创造性成就。在《中国科学》、《科学通报》、《海洋学报》、《海洋与湖沼》等著名学术刊物发表论文70余篇,获得较高学术评价和广泛引用。主要科学成就和贡献有:提出了三维线性海浪要素的完整统计理论,国内外同类研究至今仍未超越这一框架。以新观点导出非线性海浪波面高度统计分布,解释了国外原有理论与观测不符的物理原因,开辟了非线性海浪统计理论研究的有效途径。提出了海浪外观能量分布的新观念,冲破海浪谱仅以双参数指数型函数表达的局限,首次给出三参量柯西型理论外频谱,证明PM谱与B谱的等价性,解决了长期存在的困惑,代表了海浪谱研究的新方向。上述成果获得中国高校自然科学一等奖。在国内率先开展海浪非线性与高阶谱关系的理论与实验研究,首次给出以海浪波面高度表示的海浪理论二阶谱,发现并纠正了Tuah等人波面高度分布偏度的表述错误和Tick等人对二阶谱核函数区域划分中的错误。关于二阶谱的研究获国家海洋局科技进步二等奖。将Shannon熵引入海浪研究,以表述海浪过程的无序或混乱性,揭示了海浪统计特征的物理属性。利用卫星资料分析计算了西北太平洋与中国南海的海浪场熵,发现海浪场熵是综合描述所在海域大气海洋特征的优秀定量指标,建立了海面风应力与海浪场熵的定量关系,为在海流数值模式中考虑海浪的作用提供了一种可行的新途径。作为海洋上混合层动力机制研究的重要内容,获教育部科技进步二等奖。建立了能自深水致浅水协调阐明近岸海浪变浅作用的统一理论,是继Biesel之后最具标志性的重大理论进展。
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孙孚
中国科学(A辑),1988,(5):501~508,-0001,():
-1年11月30日
依据波动的射线理论及随机波的线性模型,提出了一种三维海浪要素统计分布的完整理论。依此理论,只要获得方向谱的10个参数就能确定各种波浪要素的统计分布。结果表明,波高仍然服从Rayleigh分布;波高与周期的联合分布仅取决于一维谱而与给定的弥散关系无关;与波长有关的分布不仅依赖于谱的高频行为并取决于谱的方向特征;波陡分布由方向谱的6个参数确定;周期与波长的联合分布是存在的。当然,详尽的观测或实验检验是完全必要的。
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孙孚, 丁平兴**, 余宙文
中国科学(B辑),1993,24(3):312~317,-0001,():
-1年11月30日
本文是随机海浪二阶非线性特征量研究的第一部分。在精确导出任意均匀水域上三维随机波动一阶解、二阶解的基础上,更严密、更合理地重新推导了波面高度分布的偏度与二阶功率谱的理论表达式,并首次给出了有限水深波面二阶谱的理论形式。
非线性海浪、偏度、二阶功率谱、二阶谱
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【期刊论文】海浪二阶非线性特征量的研究*—Ⅱ.解释、推论及验证
孙孚, 丁平兴**, 余宙文**
中国科学(B辑),1994,24(4):418~425,-0001,():
-1年11月30日
本文首先对文献[1]中导出的理论结果给予明确、合理的物理解释;然后,将这些理论结果分别应用于三维深水波动、二维有限深水及二维深水波动,系统地给出这些主要波动模式中二阶非线性特征量的理论表达式;最后,论述了在大型风浪槽内设计并进行的风浪实验,用获得的实验资料验证了本文导出的理论结果,发现两者相当符合。
非线性海浪、偏度、二阶功率谱、二阶谱
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孙孚, 丁平兴+
海洋与湖沼,1994,25(4):395~398,-0001,():
-1年11月30日
依据作者提出的海浪能量外观分布,即外频谱的概念,重新推导了Bretschne Lder风浪谱,极大地简化了Bret schneider原来的推演过程,并对谱的系数予以订正,将订正后的Bretschneider谱与Pie rSOll和Mos cowitz谱进行了比较,结果表明,两种风浪频谱在数学表述上是完全等价的。
海浪能量的外观分布, 外频谱, 海浪频谱, 内频谱
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【期刊论文】Statistical distribution of surface elevation for the fourth order nonlinear random sea waves*
孙孚, 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 λs 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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【期刊论文】On the joint distribution of surface slopes for the fourth order nonlinear random sea waves*
孙孚, ZHANG Shuwen, SUN Fu, and GUAN Changlong
SCIENCE IN CHINA (Series E), 1999, 42 (5): 449~455,-0001,():
-1年11月30日
Based upon the nonlinear model of Languet-Higgins the joint distribution of wave surface slopes is theoretically investigated. It is shown that in the fourth order approximation, the distribution is given by truncated Gram-Charlier series. The types of wave-wave coupling interactions are related to the order of approximation to nonlinearity of sea surface, which eventually defines the truncated term of the Gram-Charlier series. For each order approximation, the coefficients in the series are modified comparatively to the corresponding ones for the previous order approximation. If the nonlinear effect of the kurtosis is considered, the wave surface must be as accurate at least as to the third order approximation, and with regard to skewness, the wave surface must be as accurate at least as to the fourth order approximation.
nonlinear statistical distributlon,, wave surface slope,, kurtosis,, skewness.,
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【期刊论文】Apparent energy distribution of sea waves*
孙孚, SUN Fu, and DING Pingxing
SCIENCE IN CHINA (Series B), 1994, 37 (11): 1401~1408,-0001,():
-1年11月30日
A concept of apparent energy distribution of sea waves is suggested and named "the outer Dequency spectrum" to distinguish it from the frequency spectrum in common sense In line with the concept, a kind or outer spectrum with three parameters in Cauchy's form is derived theoretically from the joint distribution of wave periods and heights reached previously by the present authors and the Bretschnelder spectrum is rededuced simply in a distinct manner. The foundation of medlanics of the snnilarity between the frequency, spectrum m common sense and the outer one is briefly discussed, in view of the fact that Bretschneider spectrum has a wide application in engineering, the advantages and probabihty of asmg the outer spectrum as a common one are also considered.
apparent energy distribution,, frequency spectrtma of sea waves,, outer spectrum,, inner spectrum
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孙孚, SUN Fu, and DING Ping-Xing
SCIENCE IN CHINA (Series B), 1995, 38 (1): 117~123,-0001,():
-1年11月30日
Based upon the nonlinear model of random sea waves, a commonly applicable statistical distribution of wave surface elevation exact to the third order is derived through the" direct calculations of each order moment. The distribution arrived reduces, in the sense of being exact to He, to the Gram-Charlier series due to Longuet-Higgins for deep water, provided that only the two simplest kinds of wave-wave interactions are Taken into account. The reason why the agreement of Oram-Charlier series with experimental data becomes worse and worse as the terms of series are increased is explicited for the first time.
nonlinearity,, statistical distribution,, sea-wave surface,, wave-wave Interaction.,
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