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diurnal variation

Definitions

  • WordNet 3.6
    • n diurnal variation fluctuations that occur during each day
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Usage

In literature:

But the refinements of the methods employed allow the diurnal variations both of velocity and altitude to be successfully measured.
"Scientific American Supplement, No. 611, September 17, 1887" by Various
What bond could exist between the movements of that distant world and the diurnal variation of the waters of the earth?
"The Outline of Science, Vol. 1 (of 4)" by J. Arthur Thomson
In some regions these glacial rivers have a diurnal variation.
"Nature's Miracles, Volume 1" by Elisha Gray
It has, as we have said, a perceptible diurnal variation of two maxima and two minima.
"The Philosophy of the Weather" by Thomas Belden Butler
This is one of the reasons why in the figures for the annual and diurnal variations in Tables I., II.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
It has an annual and a diurnal variation.
"A Treatise on Meteorological Instruments" by Henry Negretti
Here also I found that diurnal variation of temperature induced a periodic movement exactly similar to that in Palm trees.
"Life Movements in Plants, Volume II, 1919" by Sir Jagadis Chunder Bose
The diurnal variation in wind velocity over the open ocean is so slight as hardly to be noticeable.
"Practical Exercises in Elementary Meteorology" by Robert DeCourcy Ward
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In science:

Also, the influence of wind and diurnal temperature variations on the surface stability was a point of concern.
Near-Field Radio Holography of Large Reflector Antennas
Fig. 12 Diurnal variation of the daytime seeing at Dome C, measured by Aristidi et al. (2005a).
Astronomy in Antarctica
In the second paper, they analyzed more recent data for the electron alone and obtained a bound on sidereal time variations given by re a, diurnal ∼< 1.6×10−21 .
Lorentz and CPT Tests in QED
Measurements of the tilt variations of the CSO show amplitudes of 4.6 µrad and 1.6 µrad at diurnal and semi-diurnal frequencies.
Tests of relativity using a microwave resonator
Temperature measurements of the CSO lab and the electronics panel taken during some of the experimental runs show room temperature variations with amplitudes of 0.3 ◦C and 0.1 ◦C for the diurnal and semi-diurnal components which are reduced to 0.04 ◦C and 0.01 ◦C on the panel.
Tests of relativity using a microwave resonator
Diurnal systematics are variations in detector response over a 24-hour timescale, such as might be caused by diurnal changes in the laboratory environment.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
Diurnal systematics are variations in detector response with a 24-hour periodicity. A strictly hypothetical example would be diurnal variations in the laboratory’s temperature, which in principle could change the response of the SNO electronics if there were uncompensated temperature dependencies.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
Because the timescale for diurnal variations is much shorter than the average interval between calibrations, diurnal stability must be evaluated using classes of events that are continually present in the detector.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
Small diurnal and seasonal variations of a few percent in the predicted muon rate, expected as a result of variations in the scale height of the atmosphere, are neglected.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
Measurements of diurnal rate stability for low-energy radioactivity can thus be used to limit diurnal variations in energy scale and energy resolution.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
The insensitivity to the length of the normalization period of the asymmetry, and the fact that asymmetries in all regions of the detector are consistent with zero, make it very unlikely there are diurnal variations in the detector response.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
Assuming instead that the entire variation is due to changes in energy resolution, the diurnal energy resolution variation can be limited to ±0.5%.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
In-situ radioactive background measurements can also place limits on diurnal variations in event isotropy.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
In addition to diurnal variations in detector response (see Sec.
Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of $^{8}$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
The volume of data collected by several large-mass experiments is individually approaching the figure of 100 kg-y and therefore sensitivities of O(0.1%) to diurnal variations in WIMP interaction rate are expected in the near future .
Solar-bound weakly interacting massive particles: a no-frills phenomenology
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