Results 71 to 80 of about 89,813 (296)
Earth, Planets and SpaceThe clear ~ 6-year beat in the polar motion data has allowed us to consider the Chandler period (P) as ~ 1.2 years, albeit approximately, from solely the observed polar motion data.
Ryuji Yamaguchi, Masato Furuya
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Effects of Huge Earthquakes on Earth Rotation and the length of Day
Terrestrial, Atmospheric and Oceanic Sciences, 2013 We calculated the co-seismic Earth rotation changes for several typical great earthquakes since 1960 based on Dahlen¡¦s analytical expression of Earth inertia moment change, the excitation functions of polar motion and, variation in the length of a day ...
Changyi Xu, Wenke Sun, Xin Zhou
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Consistent atmospheric and oceanic excitation of the Earth's free polar motion [PDF]
Geophysical Journal International, 2004 SUMMARY Earth orientation parameters as observed by space-geodetic techniques show a broad spectrum of frequencies. Many efforts have been made to relate spectral peaks to geophysical processes, such as atmospheric or oceanic variations. However, the mechanisms of excitation of some typical oscillations are still unclear.
Seitz, F., Struck, J., Thomas, M.
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A Stark decelerator on a chip [PDF]
, 2008 A microstructured array of 1254 electrodes on a substrate has been configured to generate an array of local minima of electric field strength with a periodicity of 120 $\mu$m about 25 $\mu$m above the substrate.
Conrad, Horst +2 more
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FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei +3 more
wiley +1 more source
Polar motions excited by a convecting viscous mantle
Geophysical Research Letters, 1992 The role played by time‐dependent mantle convection on exciting long‐term polar motions is examined by means of a viscous model. For sufficiently low effective viscosity, polar‐wander speeds of 0(1 deg/Myr) would require contributions from the off‐diagonal elements of the inertia tensor, with magnitudes around 105 times smaller than those found in ...
Jiří Moser +2 more
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Regional Signals in Atmospheric and Oceanic Excitation of Polar Motion [PDF]
International Astronomical Union Colloquium, 2000 AbstractAtmospheric and oceanic variability have been shown to play a role in the excitation of polar motion. Regional patterns of atmospheric and oceanic excitation are analysed and compared. The equatorial excitation functions, χ1 an χ2, for the ocean are computed using velocity and mass fields from a near-global ocean model, driven by observed ...
Jolanta Nastula +2 more
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A Theory of Ferroelectric Phase Transition in SrTiO$_3$ induced by Isotope Replacement
, 2003 A theory to describe the dielectric anomalies and the ferroelectric phase transition induced by oxygen isotope replacement in SrTiO$_3$ is developed. The proposed model gives consistent explanation between apparently contradictory experimental results on
E.K.H. Salje +21 more
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The Aging Blood: Cellular Origins, Circulating Drivers, and Therapeutic Potential
Aging and Cancer, EarlyView.As a conduit linking all organs, the blood system both reflects and actively drives systemic aging. This review highlights how circulating pro‐aging and antiaging factors and age‐associated hematopoietic stem cell dysfunction contribute to immunosenescence and multi‐organ decline, positioning the hematopoietic system as a target for aging intervention.
Hanqing He, Jianwei Wang
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A preliminary nonlinear analysis of the earth's chandler wobble
Discrete Dynamics in Nature and Society, 2000 The Chandler wobble (CW) is a resonant response of the Earth rotational pole wandering around its figure axis whose excitation mechanism is still uncertain.
V. Frede, P. Mazzega
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