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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39883

Title: Mapping the coastal bathymetry with FORMOSAT-2 image
Authors: Shih-jen Huang;Nan-Jung Kuo;Chung-Ru Ho;Cheng-Han Tsai;Hsien-Wen Li;Yao-Tsai Lo;Dong-Jiing Doong;Hung-Jen Lee;Young-Zehr Kehr
Contributors: 國立臺灣海洋大學:海洋環境資訊學系
Date: 2010-05
Issue Date: 2017-01-05T07:53:16Z
Publisher: OCEANS 2010 IEEE - Sydney
Abstract: Abstract: In this study, the FORMOSAT-2 satellite data was used to estimate the bathymetry directly or through unsupervised classification first. Both the satellite retrieved water depths were corrected by the in-situ tidal data. The no-classified results show that more than 82% satellite-derived water depths have the error below 20% comparing with the in-situ data. Meanwhile, its root mean square error is 2.5 m. After classification, it is found that class 4 and 5 are located on the water region. Therefore, the retrieved water depth can be calculated just in class 4 and 5 regions. At class 4, there are 77% of data points having the error less than 20%. Its root mean square error is 2.7m. At class 5, more than 81% data points with the error below 20% and its root mean square error is 1.0m. The results indicate that the shallow water depth could be mapped accurately from FORMOSAT-2 image. Moreover, the satellite data has the potential to become an important tool for bathymetry map based on its spatial coverage, frequent interval, and safety.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39883
Appears in Collections:[海洋環境資訊系] 演講及研討會

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