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A statistical comparison of VHF techniques to study clear-air vertical velocities in the lower atmosphere using the Jicamarca radar
(American Geophysical Union, 1998-11)
We compare two types of VHF vertical velocity measurement techniques using a special configuration of the Jicamarca 50-MHz radar antenna. Zenith (vertically directed single-beam) techniques and spaced antenna (SA) techniques ...
Understanding spaced-receiver zonal velocity estimation
(American Geophysical Union, 2004-10-27)
Spaced-receiver analysis can be used to estimate the ionospheric zonal irregularity velocity. This involves first measuring the scintillation pattern velocity and then estimating the zonal irregularity velocity. A ...
Theoretical relationship between maximum value of the post-sunset drift velocity and peak-to-valley ratio of anomaly TEC
(American Geophysical Union, 2004-02-11)
Theoretical study of electron density distribution in the nighttime equatorial ionosphere shows that linear relationships with statistically significant correlation coefficients exist between the maximum value of the ...
Laboratory measurements of the sedimentation velocity of hexagonal planar ice crystals
(John Wiley & Sons Ltd, 2018-07-23)
New experimental measurements of the falling velocity, size and orientation of individual hexagonal plate-like ice crystals are reported. The measurements were conducted at three different temperatures: −13, −16 and −20 ...
Direct Measurements of the Malvinas Current Velocity Structure
(Blackwell Publishing, 2021-03)
Direct velocity measurements of the Malvinas Current (MC) were carried out on multiple occupations of five transects across the flow using a Shipborne Acoustic Current Profiler (SADCP) on the R/V Akademik Sergey Vavilov ...
A video camera recording method for measuring terminal velocity of seed dispersal by wind
(Springer, 2021-02)
An accurate and convenient method is essential for measuring the terminal velocity of seeds dispersed by wind. Systematic and random errors produced by existing methods lower the accuracy and convenience in determining ...
Rectification of Image Velocity Results (RIVeR): A simple and user-friendly toolbox for large scale water surface Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV)
(Pergamon-Elsevier Science Ltd, 2017-12)
LSPIV (Large Scale Particle Image Velocimetry) and LSPTV (Large Scale Particle Tracking Velocimetry) are used as relatively low-cost and non-intrusive techniques for water-surface velocity analysis and flow discharge ...
Human life signs detection using high-sensitivity pulsed laser vibrometer
(IEEE Sensors Journal, 2007)
Human life signs detection using high-sensitivity pulsed laser vibrometer
(IEEE Sensors Journal, 2007)
Simulated annealing velocity analysis: Automating the picking process
(Society of Exploration Geophysicists, 2021-03)
We have developed an automated method for velocity picking that allows us to estimate appropriate velocity functions for the normal moveout correction of common-depth-point (CDP) gathers, valid for either hyperbolic or ...