| Nearshore Wave Field Analysis Using SAR Images |
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| 作者姓名： | DOONG Dongjiing KAO Chiachuen CHUANG Zsuhsin LIN Hongpeng |
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| 作者单位： | Department of Hydraulics and Ocean Engineering，Department of Hydraulics and Ocean Engineering，Coastal Ocean Monitoring Center，Department of Hydraulics and Ocean Engineering ChengKungUniversity，Tainan701，China，ChengKungUniversity，Tainan701，China，Cheng Kung University，Tainan701，China，ChengKungUniversity，Tainan701，China |
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| 基金项目： | ThisstudywassupportedbyNSCinTaiwanundertheprojectNo .NSC 89 2 611 E 0 0 6 0 4 0 . |
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| 摘 要： | 1 .Ｉｎｔｒｏｄｕｃｔｉｏｎ1ＴｈｉｓｓｔｕｄｙｗａｓｓｕｐｐｏｒｔｅｄｂｙＮＳＣｉｎＴａｉｗａｎｕｎｄｅｒｔｈｅｐｒｏｊｅｃｔＮｏ .ＮＳＣ 89 2 611 Ｅ 0 0 6 0 4 0 . Ｃｏｒｒｅｓｐｏｎｄｉｎｇａｕｔｈｏｒ.Ｅ ｍａｉｌ:ｄｊｄｏｏｎｇ @ｐｃｈｏｍｅ .ｃｏｍ .ｔｗ Ｏｃｅａｎｗａｖｅｓ ,ｗｈｉｃｈａｒｅｅｘｔｒｅｍｅｌｙｒａｎｄｏｍ ,ａｒｅｄｉｒｅｃｔｌｙａｎｄｉｎｄｉｒｅｃｔｌｙｄｅｐｅｎｄｅｎｔｏｎｍｅｔｅｏｒｏｌｏｇｉ ｃａｌ,ｈｙｄｒｏｌｏｇｉｃａｌ,ｏｃｅａｎｏｇｒａｐｈｉｃａｎｄｔｏｐｏｇ…
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Nearshore Wave Field Analysis Using SAR Images |
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| DOONG Dongjiing,KAO Chiachuen,CHUANG Zsuhsin,LIN Hongpeng.Nearshore Wave Field Analysis Using SAR Images[J].China Ocean Engineering,2003,17(1). |
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| Authors: | DOONG Dongjiing KAO Chiachuen CHUANG Zsuhsin LIN Hongpeng |
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| Abstract: | Satellite remote sensing technique offers a wide range of information, and is one of the tools for ocean wave observation. This paper discusses the limitations of Synthetic Aperture Radar (SAR) images in wave field analysis. It is found that the wave field analysis is affected by the gray value distribution of image and the relationship between satellite travel and wave propagation directions. Since human activities and coastal engineering are performed in nearshore areas, some issues are discussed for nearshore SAR image analysis. Several case studies show that the wave parameters estimated from nearshore SAR images are quite different from in situ measurements, suggesting that the wave information derived from nearshore SAR images cannot appropriately represent the wave characteristics. One of the reasons is that the wave field is non homogeneous in the nearshore area. |
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| Keywords: | SAR image directional wave spectra nearshore wave field |
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