| Autor: |
Shahid Pervez, Maria Firdous, Farah Saleem, Farzeen Riaz, Zahida Najmi, Mansoor Tariq |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
2019 Sixth International Conference on Aerospace Science and Engineering (ICASE). |
| DOI: |
10.1109/icase48783.2019.9059196 |
| Popis: |
Digital elevation models represent the three-dimensional surface over the terrain. In the modern age, DEMs established its strong importance in terrain analysis due to its wide range of applications. In the landscape analysis, especially in delineating watershed boundaries DEMs plays a key role. DEMs are generated through different sources such as PCD LiDAR DEM (1m), CARTOSAT (5m) of Indian Space Research Organization and ALOS/PALSAR (12m) are utilized in the present study to delineated watershed boundaries in the Feather River, California. The present study demonstrates the accuracy of automatically generated watershed networks from DEM of different sources. In order to characterize the watershed parameters extracted from different DEMs, hydro-enforcement technique is carried out ArcHydro tool extension in the ArcGIS. Drainage network acquired through toposheet are used as reference to cross check the accuracy of DEMs generated drainage networks. The results suggest that 1m LiDAR DEM generated best, detailed and most accurate hydro-enforced DEMs while other low resolution DEMs generate reasonably drainage networks. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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