Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024562 |
Modeling DEM Errors in Coastal Flood Inundation and Damages: A Spatial Nonstationary Approach | |
Karamouz, M.1; Fereshtehpour, M.2 | |
2019-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:8页码:6606-6624 |
文章类型 | Article |
语种 | 英语 |
国家 | Iran |
英文摘要 | Digital elevation model (DEM) as an essential input to flood risk analyzers is subject to a certain level of uncertainty, which increases as the resolution becomes coarser. To quantify this uncertainty, a probabilistic framework incorporating 2-D hydrodynamic flood mapping by LISFLOOD-FP along with a sequential Gaussian simulation (SGS) model is presented in this paper. Based on ordinary kriging (OK) interpolation techniques, spatial uncertainty is modeled through SGS by generating several equiprobable realizations. Furthermore, regression kriging (RK) is used in the SGS algorithm utilizing its ability to explore additional information such as terrain characteristics to estimate the elevation error. A new technique called nonstationary sequential Gaussian simulation is also proposed by introducing the spatial nonstationarity of DEM error into SGS framework based on two approaches of uniform and nonuniform moving window. Different DEM resolutions resampled from a 1-m light detection and ranging-derived DEM are used in the hydrodynamic model to derive the accuracy-efficiency trade-offs and select the most suitable spatial resolution for probabilistic analysis. A detailed comparison among OK, RK, nonstationary OK, and nonstationary RK models is made considering probabilistic floodplain characteristics. The subsequent risk curves are then derived under floods of different return periods. The methodology is implemented in the coastal areas of Lower Manhattan and Brooklyn in New York City. Results show that the proposed methodology could reduce the uncertainty in risk estimation imposed by the stationarity assumption. The methodology could help decision-makers to more accurately utilize the existing tools and data for flood risk analysis and preparedness. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000490973700015 |
WOS关键词 | DIGITAL ELEVATION MODELS ; REGRESSION ; UNCERTAINTY ; INTERPOLATION ; PREDICTION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185855 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tehran, Sch Civil Engn, Tehran, Iran; 2.Ferdowsi Univ Mashhad, Dept Water Sci & Engn, Mashhad, Razavi Khorasan, Iran |
推荐引用方式 GB/T 7714 | Karamouz, M.,Fereshtehpour, M.. Modeling DEM Errors in Coastal Flood Inundation and Damages: A Spatial Nonstationary Approach[J]. WATER RESOURCES RESEARCH,2019,55(8):6606-6624. |
APA | Karamouz, M.,&Fereshtehpour, M..(2019).Modeling DEM Errors in Coastal Flood Inundation and Damages: A Spatial Nonstationary Approach.WATER RESOURCES RESEARCH,55(8),6606-6624. |
MLA | Karamouz, M.,et al."Modeling DEM Errors in Coastal Flood Inundation and Damages: A Spatial Nonstationary Approach".WATER RESOURCES RESEARCH 55.8(2019):6606-6624. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论