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Mohammed El Bastawesy, Omnia El Saadawy, Abotalib Z. Abotalib, Abdullah Othman, Maysa Taha and Ahmed Gaber
Digital elevation models (DEMs) are the cornerstone for hydrological and geomorphological modeling. Herein, two Nile-tributary catchments (Wadi Al Rishrash and Wadi Atfeh) in Egypt are selected to examine the contribution of different DEMs to the accurac...
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Qifei Zhou, Changqing Zhu and Na Ren
How to keep the fidelity of the digital elevation model (DEM) data is a crucial problem in the current watermarking research, as the watermarked DEM data need to preserve their accuracy. We proposed a zero watermarking method for the triangulated irregul...
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Zening Wu, Bingyan Ma, Huiliang Wang and Caihong Hu
The storm water management model (SWMM) is widely used in urban rainfall runoff simulations, but there are no clear rules for the division of its sub catchment areas. At present, the popular sub catchment area division method takes the average slope as t...
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Isabel Luisa Castillejo-González, Cristina Angueira, Alfonso García-Ferrer and Manuel Sánchez de la Orden
This paper presents an object-based approach to mapping a set of landforms located in the fluvio-eolian plain of Rio Dulce and alluvial plain of Rio Salado (Dry Chaco, Argentina), with two Landsat 8 images collected in summer and winter combined with top...
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Prasad Daggupati, Rituraj Shukla, Balew Mekonnen, Ramesh Rudra, Asim Biswas, Pradeep K. Goel, Shiv Prasher and Wanhong Yang
In the last decade, Lake Erie, one of the great lakes bordering Canada and the USA has been under serious threat due to increased phosphorus levels originating from agricultural fields. Large scale watersheds contributing to Lake Erie from the USA side a...
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Prasad Daggupati, Rituraj Shukla, Balew Mekonnen, Ramesh Rudra, Asim Biswas, Pradeep K. Goel, Shiv Prasher and Wanhong Yang
In the last decade, Lake Erie, one of the great lakes bordering Canada and the USA has been under serious threat due to increased phosphorus levels originating from agricultural fields. Large scale watersheds contributing to Lake Erie from the USA side a...
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Salvatore Manfreda, Caterina Samela, Alberto Refice, Valerio Tramutoli and Fernando Nardi
The last decades have seen a massive advance in technologies for Earth observation (EO) and environmental monitoring, which provided scientists and engineers with valuable spatial information for studying hydrologic processes. At the same time, the power...
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Junlin Zhang, Wei Xu, Lianjie Qin and Yugang Tian
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Bas Van de Sande, Joost Lansen and Claartje Hoyng
Most coastal flood risk studies make use of a Digital Elevation Model (DEM) in addition to a projected flood water level in order to estimate the flood inundation and associated damages to property and livelihoods. The resolution and accuracy of a DEM ar...
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Gordana Jakovljevic, Miro Govedarica, Flor Alvarez-Taboada and Vladimir Pajic
Digital elevation model (DEM) has been frequently used for the reduction and management of flood risk. Various classification methods have been developed to extract DEM from point clouds. However, the accuracy and computational efficiency need to be impr...
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Chhabi Lal Chidi, Wei Zhao, Suresh Chaudhary, Donghong Xiong and Yanhong Wu
Soil erosion in the agricultural area of a hill slope is a fundamental issue for crop productivity and environmental sustainability. Building terrace is a very popular way to control soil erosion, and accurate assessment of the soil erosion rate is impor...
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Nadeem Fareed and Chi-Kuei Wang
High-resolution digital elevation models (HR-DEMs) originating from airborne laser scanning (ALS) point clouds must be transformed into Culvert-modified DEMs for hydrological and geomorphological analysis. To produce a culvert-modified DEM, information o...
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Ehsan H. Chowdhury, Quazi K. Hassan, Gopal Achari and Anil Gupta
The lower Athabasca River watershed is one of the most important regions for Alberta and elsewhere due to fact that it counts for the third largest oil reserve in the world. In order to support the oil and gas extraction, Athabasca River provides most of...
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Ehsan H. Chowdhury, Quazi K. Hassan, Gopal Achari, Anil Gupta
Pág. 1 - 16
The lower Athabasca River watershed is one of the most important regions for Alberta and elsewhere due to fact that it counts for the third largest oil reserve in the world. In order to support the oil and gas extraction, Athabasca River provides most of...
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Ji Shen, Zhong Tong, Jianfeng Zhu, Xiaofei Liu, Fei Yan
Pág. 1 - 20
This paper proposes a new rapid simplified inundation model (NRSIM) for flood inundation caused by rainstorms in an urban setting that can simulate the urban rainstorm inundation extent and depth in a data-scarce area. Drainage basins delineated from a f...
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Ji Shen, Zhong Tong, Jianfeng Zhu, Xiaofei Liu and Fei Yan
This paper proposes a new rapid simplified inundation model (NRSIM) for flood inundation caused by rainstorms in an urban setting that can simulate the urban rainstorm inundation extent and depth in a data-scarce area. Drainage basins delineated from a f...
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Yohei Ueno, Taichi Tebakari, Keigo Noda and Kazuhiro Yoshimi
In this study, we examine the possibility of proactive floodwater diversion to fields via backwater in numerical experiments using multiple elevation data products with different spatial resolutions and explore the optimal timing of water diversion from ...
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Fahmi Amhar, Endang Purnama Giri, Florence Elfriede Sinthauli Silalahi, Shelvie Nidya Neyman, Anggrahito, Dadan Ramdani, Danang Jaya, Dewayany Sutrisno, Sandi Adhitya Kolopaking, Tia Rizka Nuzula Rachma and Murdaningsih
This research aims to protect Digital Elevation Model (DEM) data from piracy or counterfeiting. An invisible watermark inserted into the data, which will not considerably change the data value, is necessary. The proposed method involves the use of the tw...
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Chunsen Zhang, Shu Shi, Yingwei Ge, Hengheng Liu and Weihong Cui
The digital elevation model (DEM) generates a digital simulation of ground terrain in a certain range with the usage of 3D point cloud data. It is an important source of spatial modeling information. Due to various reasons, however, the generated DEM has...
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Timofey E. Samsonov
Combining misaligned spatial data from different sources complicates spatial analysis and creation of maps. Conflation is a process that solves the misalignment problem through spatial adjustment or attribute transfer between similar features in two data...
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