Estimation of Joint Probability Density Functions of Surface Elevation and Slopes for a Nonlinear Random Sea
| Project/Area Number |
23560607
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
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| Keywords | 非線形波浪 / リモートセンシング / 結合確率分布 / 水位分布 / 波高分布 / skewness / kurtosis / リモートセンシンｸﾞ / 非線形波 / 水面勾配 / 海面高度計 / 有義波高 / 多次元Gauss分布 / 波高推定 |
|---|
| Research Abstract |
Laboratory experiments were conducted to measure the joint distribution of the surface elevation and slopes for nonlinear random waves. A method for estimating the joint distribution of surface elevation and slopes was developed by applying the principle of maximum entropy. The estimated distributions were compared with the measured distributions, the Gram-Charlier series and bivariate Gaussian distributions. The present method was found to produce a similar distribution to that observed.
The relationship between skewness and kurtosis was theoretically and experimentally investigated. The effects of reflected waves on the joint distribution of the surface and slopes were also investigated. The theoretical conditional distributions ofbased on a simple nonlinear wave model reproduced the dependence on the representative wave slope and were in good agreement with the laboratory observations.
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Report
(4 results)
Research Products
(31 results)
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[Book] 日本の海岸2013
Author(s)
柴山知也・茅根創編, 泉宮尊司
Total Pages
152
Publisher
朝倉書店
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