Results 11 to 20 of about 1,467,433 (277)

QCam: sUAS-Based Doppler Radar for Measuring River Discharge

Remote Sensing, 2020
The U.S. Geological Survey is actively investigating remote sensing of surface velocity and river discharge (discharge) from satellite-, high altitude-, small, unmanned aircraft systems- (sUAS or drone), and permanent (fixed) deployments. This initiative
John W. Fulton, Isaac E. Anderson, C.-L. Chiu, Wolfram Sommer, Josip D. Adams, Tommaso Moramarco, David M. Bjerklie, Janice M. Fulford, Jeff L. Sloan, Heather R. Best, Jeff S. Conaway, Michelle J. Kang, Michael S. Kohn, Matthew J. Nicotra, Jeremy J. Pulli   +14 more
doaj   +1 more source

Measurement of Surface Velocity in a 150 mm × 1270 mm Slab Continuous-Casting Mold

Metals, 2020
Surface velocity in the continuous-casting mold needs to be studied to better control the quality of steel products. In this paper, the measurement of surface velocity in a 150 mm × 1270 mm slab continuous-casting mold was investigated.
Yang Wang, Jie Feng, Shufeng Yang, Jingshe Li   +3 more
doaj   +1 more source

Characteristics of Glaciers Surging in the Western Pamirs

Remote Sensing, 2023
The regional surge patterns and control mechanisms for glaciers in the western Pamirs are unclear. Using remote sensing, more surge-type glaciers have been discovered in the western Pamirs.
Zhenfeng Wang, Zongli Jiang, Kunpeng Wu, Shiyin Liu, Yong Zhang, Xin Wang, Zhen Zhang, Junfeng Wei   +7 more
doaj   +1 more source

Flow Measurement in Steep Channels Using Large Scale Particle Image Velocimetry (LSPIV) [PDF]

علوم و مهندسی آبیاری, 2022
Measuring flow discharge in rivers and open channels has always been one of the most important concerns of water sciences experts. The most common flow measurement method in open channels is velocity- area approach.
Farhad Akbarpour, Manoochehr Fathi-Moghadam, Ahmad Fathi   +2 more
doaj   +1 more source

Considerations When Applying Large-Scale PIV and PTV for Determining River Flow Velocity

Frontiers in Water, 2021
Large-scale image velocimetry is a novel approach for non-contact remote sensing of flow in rivers. Research within this topic has largely focussed on developing specific aspects of the image velocimetry work-flow, or alternatively, testing specific ...
Martin J. Jolley, Andrew J. Russell, Paul F. Quinn, Matthew T. Perks   +3 more
doaj   +1 more source

Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]

, 2005
Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Curtis, A., Trampert, J., van Vossen, R.
core   +1 more source

Summer Mass Balance and Surface Velocity Derived by Unmanned Aerial Vehicle on Debris-Covered Region of Baishui River Glacier No. 1, Yulong Snow Mountain

Remote Sensing, 2020
Glacier retreat is a common phenomenon in the Qinghai-Tibetan Plateau (QTP) with global warming during the past several decades, except for several mountains, such as the glaciers in the Karakoram and the western Kunlun Mountains.
Yanjun Che, Shijin Wang, Shuhua Yi, Yanqiang Wei, Yancong Cai   +4 more
doaj   +1 more source

Near-Field Remote Sensing of Surface Velocity and River Discharge Using Radars and the Probability Concept at 10 U.S. Geological Survey Streamgages

Remote Sensing, 2020
Near-field remote sensing of surface velocity and river discharge (discharge) were measured using coherent, continuous wave Doppler and pulsed radars. Traditional streamgaging requires sensors be deployed in the water column; however, near-field remote ...
John W. Fulton, Christopher A. Mason, John R. Eggleston, Matthew J. Nicotra, Chao-Lin Chiu, Mark F. Henneberg, Heather R. Best, Jay R. Cederberg, Stephen R. Holnbeck, R. Russell Lotspeich, Christopher D. Laveau, Tommaso Moramarco, Mark E. Jones, Jonathan J. Gourley, Daniel Wasielewski   +14 more
doaj   +1 more source

Effect of vertical velocity profile approximations on estimates of dam breach discharge using surface velocities

Journal of Flood Risk Management, 2021
In order to investigate the relationship between water surface velocity and breach hydrograph, a series of dam breach experiments with a generalised landslide dam were conducted in an open channel of 50 m × 4 m × 2 m.
Jie Liu, Hong Xiao, Pengzhi Lin, Chuanxing Zhou, Wei Wang   +4 more
doaj   +1 more source

Influence of submerged entry nozzle on funnel mold surface velocity

High Temperature Materials and Processes, 2023
In this article, physical and numerical simulation of the flow field in flexible thin slab caster funnel mold at high casting speed is carried out with a five-hole submerged entry nozzle (FHSEN), and characteristics of the flow field on funnel mold ...
Zhang Limin, Zhu Liguang, Zhang Caijun, Xiao Pengcheng, Wang Xingjuan   +4 more
doaj   +1 more source