Results 31 to 40 of about 733 (165)
Jerk and Hyperjerk in a Rotating Frame of Reference [PDF]
, 2015 Jerk is the derivative of acceleration with respect to time and then it is the third order derivative of the position vector. Hyperjerks are the n-th order derivatives with n>3.
Sparavigna, Amelia Carolina
core +2 more sources
Earth orientation and its excitations by atmosphere, oceans, and geomagnetic jerks [PDF]
Serbian Astronomical Journal, 2015 In addition to torques exerted by the Moon, Sun, and planets, changes of the Earth orientation parameters (EOP) are known to be caused also by excitations by the atmosphere and oceans.
Vondrák J., Ron C.
doaj +1 more source
Temporal Variations of Strength and Location of the South Atlantic Anomaly as Measured by RXTE [PDF]
, 2009 The evolution of the particle background at an altitude of ~540 km during the time interval between 1996 and 2007 is studied using the particle monitor of the High Energy X-ray Timing Experiment on board NASA's Rossi X-ray Timing Explorer.
Fürst, Felix +5 more
core +3 more sources
Contributions to Geophysics and Geodesy, 2018 We report phenomenological inevitable correlation between the Sun’s magnetic field oscillation through the Earth and the Jupiter, with sinusoidal geomagnetic jerks observed at the Earth, additionally aligned with the gravity and length of day sinusoidal ...
Mohsen LUTEPHY
doaj +1 more source
Semi‐decadal and decadal signals in atmospheric excitation of length‐of‐day
Earth and Space Science, 2020 At timescales shorter than about 2~yr, non‐tidal length‐of‐day (LOD) variations are mainly excited by angular momentum exchanges between the atmospheric, oceanic and continental hydrological fluid envelopes and the underlying solid Earth.
Nan Yu. +4 more
doaj +1 more source
Rescue, integration, and analytical application of historical data from eight pioneering geomagnetic observatories in China [PDF]
Earth System Science DataDecades to centuries of continuous geomagnetic observation data have extensive scientific research and practical application value, especially in revealing the long-term variation of the geomagnetic field, which is irreplaceable. During the International
S. Zhang +12 more
doaj +1 more source
On the applicability of Backus' mantle filter theory [PDF]
, 2017 Geomagnetic jerks are sudden changes of trend in the geomagnetic secular variation. The Earth's mantle behaves as a filter for the jerks, causing a delayed and a smoothed signal at the Earth's surface. Backus' mantle filter theory relies on approximating
Amit, H., Jackson, A., Pinheiro, K. J.
core +1 more source
Strong earthquakes and geomagnetic jerks: a cause-effect relationship?
Annals of Geophysics, 1995 Secular variation of the geomagnetic field observed at the Earth's surface has been found to undergo impulsive accelerations Gerks) lasting less than a few years. In this paper the relations between jerks and the occurrence of strong earthquakes (Ms ?
L. Alfonsi, F. Florindo
doaj +1 more source
Stochastic modelling of regional archaeomagnetic series [PDF]
, 2014 SUMMARY We report a new method to infer continuous time series of the declination, inclination and intensity of the magnetic field from archeomagnetic data.
Bouligand, C. +3 more
core +5 more sources
Worldwide character of the 1991 geomagnetic jerk [PDF]
Geophysical Research Letters, 1998 A recent examination of the geomagnetic element annual mean values for the European magnetic observatories, has shown the existence of a sudden change in the secular acceleration at about 1991. In this work the space time character of the 1991 impulse is investigated and its worldwide character is evidenced; an evaluation of the amplitude spatial ...
P. De Michelis, L. Cafarella, A. Meloni
openaire +1 more source