题名

應用Google Earth Engine與FwDET-GEE產生淹水地圖－以台南市、嘉義縣及屏東縣為例

并列篇名

USING GOOGLE EARTH ENGINE AND FWDET-GEE TO GENERATE FLOOD MAPS - TAINAN CITY, CHIAYI COUNTY, AND PINGTUNG COUNTY AS EXAMPLES

DOI

10.6652/JoCICHE.202310_35(6).0007

作者

陳立凡(Li Fan Chen)；楊尊華(Tsun-Hua Yang)

关键词

Google Earth Engine ； 淹水地圖 ； 衛星影像 ； Google Earth Engine ； inundation maps ； satellite images

期刊名称

中國土木水利工程學刊

卷期/出版年月

35卷6期（2023 / 10 / 01）

页次

595 - 603

内容语文

繁體中文;英文
中文摘要

淹水地圖在本研究中定義為真實洪災事件中受影響的範圍與淹水深度。這樣的資訊不但幫助災害管理機構和地方居民應對區域的淹水風險，同時也提供保險單位制定洪水保險費率與理賠參考之依據。本研究透過Google Earth Engine（GEE）擷取合成孔徑雷達衛星影像判斷淹水範圍，接著使用FwDET-GEE模式估計範圍內之淹水深度。本研究先比較前人相關之研究結果，確認上述工具整合之正確性，再透過台南市、嘉義縣與屏東縣之歷史淹水事件進行驗證。以2021年7月豪雨事件為例，本模式台南市與屏東縣淹水預測範圍與觀測結果之偵測率有接近60%以上，而在2018年8月嘉義縣掌潭村之案例中，本研究之模擬淹水深度結果與觀測值均方根誤差則為0.713公尺。綜合上述結果，本研究整合GEE衛星影像與FwDET-GEE模式、快速推估都市淹水範圍與深度，未來可以提供臺灣相關單位提升都市淹水地圖資訊判定之準確性與時效性。
英文摘要

Inundation maps are defined in this study as the area affected and the depth of inundation during a real flood event. This information helps disaster management organizations and local residents to cope with the inundation risk of the area, and provides a reference for insurance companies to set flood insurance rates and claims. This study acquired the synthetic aperture radar (SAR) satellite images from Google Earth Engine to determine the inundation area, and then applied FwDET-GEE to estimate the inundation depth within the area. This study compares the results of previous studies to confirm the correctness of the integration of the above tools, and then verifies the results through the historical flooding events in Tainan City, Chiayi County, and Pingtung County. This study shows that the Probability of Detection (POD) of Tainan City and Pingtung County are close to 60% and above, while the root mean square error (RMSE) of Chiayi County is 0.713 meters, which demonstrates promising potential of applying this study to the determination of urban inundation mapping in Taiwan in the future.
主题分类 工程學 > 土木與建築工程
工程學 > 水利工程
工程學 > 市政與環境工程
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