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Articles 1 - 5 of 5
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Rapid Mapping Of Small-Scale River-Floodplain Environments Using Uav Sfm Supports Classical Theory, Guy J.-P. Schumann, Joseph Muhlhausen, Konstantinos M. Andreadis
Rapid Mapping Of Small-Scale River-Floodplain Environments Using Uav Sfm Supports Classical Theory, Guy J.-P. Schumann, Joseph Muhlhausen, Konstantinos M. Andreadis
Civil and Environmental Engineering Faculty Publication Series
Unmanned Aerial Vehicle (UAV) platforms have rapidly developed as tools for remote mapping at very high spatial resolutions. They have recently gained in popularity in many application fields owing to the versatility of platforms and sensors, ease of deployment, and a steady increase in computational power. Obtaining highly detailed topography data over very small scales is one of the more typical application domains. Here, we demonstrate this application using Structure from Motion (SfM) processing over a small river floodplain in Howard County (Maryland, USA). Evaluation of the derived bare-earth terrain model with state-of-the art LiDAR shows a trivial bias of …
Simulation-Based Assessment Of Multilane Separate Freeways At Toll Station Area: A Case Study From Huludao Toll Station On Shenshan Freeway, Changyin Dong, Hao Wang, Quan Chen, Daiheng Ni, Ye Li
Simulation-Based Assessment Of Multilane Separate Freeways At Toll Station Area: A Case Study From Huludao Toll Station On Shenshan Freeway, Changyin Dong, Hao Wang, Quan Chen, Daiheng Ni, Ye Li
Civil and Environmental Engineering Faculty Publication Series
To support the rapid growth of demand in passengers and freight, separating trucks and passenger-cars is a potential solution to improve traffic efficiency and safety. The primary purpose of this paper is to comprehensively assess the multilane separate freeway at Huludao Toll Station in Liaoning Province, China. Based on the configuration and segmentation of the freeway near a toll station, a six-step guidance strategy is designed to adapt to the separate organization mode. Five conventional traffic scenarios are designed in the Vissim platform for comparative analysis between different guidance strategies. To investigate the vehicle-to-infrastructure (V2I) environment, a microscopic testbed is …
Climate, Land Use And Land Cover Changes In The Bandama Basin (Côte D’Ivoire, West Africa) And Incidences On Hydropower Production Of The Kossou Dam, Yao Morton Kouame, Salomon Obahoundje, Arona Diedhiou, Baptiste François, Ernest Amoussou, Sandrine Anquetin, Régis Sacre Didi, Lazare Kouakou Kouassi, Vami Hermann N'Guessan Bi, Emile Gneneyougo Soro, Etienne Kouakou Yao
Climate, Land Use And Land Cover Changes In The Bandama Basin (Côte D’Ivoire, West Africa) And Incidences On Hydropower Production Of The Kossou Dam, Yao Morton Kouame, Salomon Obahoundje, Arona Diedhiou, Baptiste François, Ernest Amoussou, Sandrine Anquetin, Régis Sacre Didi, Lazare Kouakou Kouassi, Vami Hermann N'Guessan Bi, Emile Gneneyougo Soro, Etienne Kouakou Yao
Civil and Environmental Engineering Faculty Publication Series
Climate and land use/cover changes are potential drivers of change in hydrology and water use. Incidences of these factors on Bandama hydrological basin and Kossou hydropower generation (1981–2016) in West Africa are assessed in this present work. Using Landsat products of United Stated Geological Survey, results show that water bodies areas and land use have increased by 1.89%/year and 11.56%/year respectively, whereas herbaceous savanna, savanna, forest and evergreen forest coverage have been reduced by 1.39%/year, 0.02%/year, 2.39%/year and 3.33%/year respectively from 1988 to 2016. Hydroclimatic analysis reveals that streamflow presents greater change in magnitude compared to rainfall though both increasing …
A High-Resolution Airborne Color-Infrared Camera Water Mask For The Nasa Above Campaign, Ethan D. Kyzivat, Laurence C. Smith, Lincoln H. Pitcher, Jessica V. Fayne, Sarah W. Cooley, Matthew G. Cooper, Simon N. Topp, Theodore Langhorst, Merritt E. Harlan, Christopher Horvat, Colin J. Gleason, Tamlin M. Pavelsky
A High-Resolution Airborne Color-Infrared Camera Water Mask For The Nasa Above Campaign, Ethan D. Kyzivat, Laurence C. Smith, Lincoln H. Pitcher, Jessica V. Fayne, Sarah W. Cooley, Matthew G. Cooper, Simon N. Topp, Theodore Langhorst, Merritt E. Harlan, Christopher Horvat, Colin J. Gleason, Tamlin M. Pavelsky
Civil and Environmental Engineering Faculty Publication Series
The airborne AirSWOT instrument suite, consisting of an interferometric Ka-band synthetic aperture radar and color-infrared (CIR) camera, was deployed to northern North America in July and August 2017 as part of the NASA Arctic-Boreal Vulnerability Experiment (ABoVE). We present validated, open (i.e., vegetation-free) surface water masks produced from high-resolution (1 m), co-registered AirSWOT CIR imagery using a semi-automated, object-based water classification. The imagery and resulting high-resolution water masks are available as open-access datasets and support interpretation of AirSWOT radar and other coincident ABoVE image products, including LVIS, UAVSAR, AIRMOSS, AVIRIS-NG, and CFIS. These synergies offer promising potential for multi-sensor analysis …
Impact Of Soil Conservation And Eucalyptus On Hydrology And Soil Loss In The Ethiopian Highlands, Demesew A. Mhiret, Dessalegn C. Dagnew, Tilashwork C. Alemie, Christian D. Guzman, Seifu A. Tilahun, Benjamin F. Zaitchik, Tammo S. Steenhuis
Impact Of Soil Conservation And Eucalyptus On Hydrology And Soil Loss In The Ethiopian Highlands, Demesew A. Mhiret, Dessalegn C. Dagnew, Tilashwork C. Alemie, Christian D. Guzman, Seifu A. Tilahun, Benjamin F. Zaitchik, Tammo S. Steenhuis
Civil and Environmental Engineering Faculty Publication Series
The Ethiopian highlands suffer from severe land degradation, including erosion. In response, the Ethiopian government has implemented soil and water conservation practices (SWCPs). At the same time, due to its economic value, the acreage of eucalyptus has expanded, with croplands and pastures converted to eucalyptus plantations. The impact of these changes on soil loss has not been investigated experimentally. The objective of this study, therefore, is to examine the impacts of these changes on stream discharge and sediment load in a sub-humid watershed. The study covers a nine-year period that included installation of SWCPs, a three-fold increase from 1.5 ha …