Results 21 to 30 of about 635,548 (284)
Gravity disturbance driven ocean circulation [PDF]
, 2022 Abstract. The Earth true gravity (g) has been simplified in oceanography and meteorology into the standard gravity gs (= -g0k, g0 = 9.81 m s-2) with k the unit vector perpendicular to the spherical surface or the normal gn [= -g(φ)K] with K the unit vector perpendicular to the ellipsoidal surface. The gravity disturbance (δg = g – gn) due to nonuniform
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A Novel Gravity Compensation Method for High Precision Free-INS Based on “Extreme Learning Machine”
Sensors, 2016 In recent years, with the emergency of high precision inertial sensors (accelerometers and gyros), gravity compensation has become a major source influencing the navigation accuracy in inertial navigation systems (INS), especially for high-precision INS.
Xiao Zhou +3 more
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On the propagation of a disturbance in a fluid under gravity [PDF]
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1910 Abstract In a recent paper Lord Rayleigh has called attention to the fact of the instantaneous propagation of a limited disturbance over the surface of heavy incompressible fluid. This instantaneity occurs in spite of the fact that the velocity of any simple-harmonic gravity wave is finite, the depth being finite and constant.
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(2+1) gravity for higher genus in the polygon model [PDF]
, 2004 We construct explicitly a (12g − 12)-dimensional space P of unconstrained and independent initial data for ’t Hooft’s polygon model of (2+1) gravity for vacuum spacetimes with compact genus-g spacelike slices, for any g ≥ 2.
Kádár, Zoltán +5 more
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Space Weather, 2022 By using Qujing very high frequency radar (25.6°N, 103.7°E, magnetic latitude 16.1°N, magnetic longitude 177.0°E), daytime F region echoes were reported at equatorial ionization anomaly crest on 26 June 2020. Radar interferometry experiment was performed
Yi Liu +7 more
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A locally finite model for gravity [PDF]
, 2008 Matter interacting classically with gravity in 3+1 dimensions usually gives rise to a continuum of degrees of freedom, so that, in any attempt to quantize the theory, ultraviolet divergences are nearly inevitable.
't Hooft, G. +3 more
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Rotational gravity-capillary waves generated by a moving disturbance
Selecciones Matemáticas, 2021 Nonlinear gravity-capillary waves generated by the passage of a pressure distribution over a sheared channel with constant vorticity are investigated. The problem is modeled using the full Euler equations.
Marcelo Flamarion
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Three-dimensional statistical gravity disturbance model [PDF]
Geophysical Journal International, 1977 Summary The study proposes a three-dimensional gravity disturbance model to consider hitherto the unaccounted effect of the altitude. For this, secondorder statistics for the gravity disturbance vector and its components have been derived using Poisson's integral.
Negi, Janardan G., Dimri, Vijay P.
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Code and data for "Should geophysicists use the gravity disturbance or the anomaly?"
, 2018 <p>Source code and data used to generate the results in the paper "Should geophysicists use the gravity disturbance or the anomaly?" submitted to the journal Geophysics.</p> <p>This is a snapshot of the git repository: <a ...
Hallam, Kristoffer A T +7 more
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地球与行星物理论评, 2021 In this paper, based on the observation data of the SWARM satellites, the disturbance of magnetic field and plasma recorded by two satellites are extracted and studied by differential, Fourier analysis, Wavelet transform and other algorithms.
Xiaohui Du, Xuemin Zhang
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