globalchange  > 气候变化事实与影响
DOI: 10.1016/j.jag.2014.10.016
Scopus记录号: 2-s2.0-84963851519
论文题名:
Assessing the potential of MODIS/Terra version 5 images to improve near shore lake bathymetric surveys
作者: Ayana E; K; , Philpot W; D; , Melesse A; M; , Steenhuis T; S
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 36
起始页码: 13
结束页码: 21
语种: 英语
英文关键词: EWI ; Lake monitoring ; Lake Tana ; MODIS
Scopus关键词: assessment method ; bathymetric survey ; lake water ; MODIS ; nearshore environment ; satellite imagery ; Terra (satellite) ; Ethiopia ; Lake Tana
英文摘要: Estimation of storage volume of inland water bodies is made using bathymetric surveys. Such surveys are often terminated far inward from shores due to operational limitations. The gap in depth data for the shore area is often overcome by extrapolating the established volume-area relationship beyond the survey boundary. This introduces large errors in volume estimation. In this study, the potential of the Moderate Resolution Imaging Spectroradiometer MODIS version-5 images to improve an existing bathymetric model is assessed over Lake Tana, Ethiopia. MODIS images are used to generate a new bathymetric model of the unsurveyed shore. The new model is validated through its ability to reproduce measured lake levels. The result is compared with lake level estimates made from an existing bathymetric survey. Results showed that MODIS improved bathymetric model reproduced lake water level with a RMSE of 0.14 m as compared to 0.82 m using the existing bathymetric model. The Mean Absolute Error (MAE) has also improved from 0.78 m to 0.13 m. These results suggest that despite their unavailability on cloudy days, MODIS images provide significant advantages for improving bathymetric models. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79465
Appears in Collections:气候变化事实与影响

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作者单位: Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States; School of Civil and Water Resources Engineering, Bahir Dar University, Bahir Dar, Ethiopia; Geospatial Data and Technology Centre, Bahir Dar University, Bahir Dar, Ethiopia; Department of Civil and Environmental Engineering, Cornell University, Ithaca, NY, United States; Department of Earth and Environment, Florida International University, Miami, FL, United States

Recommended Citation:
Ayana E,K,, Philpot W,et al. Assessing the potential of MODIS/Terra version 5 images to improve near shore lake bathymetric surveys[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,36
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