Results 11 to 20 of about 996,046 (141)

High Frequency Variations of Earth Rotation Parameters from GPS and GLONASS Observations [PDF]

open access: yesSensors, 2015
The Earth’s rotation undergoes changes with the influence of geophysical factors, such as Earth’s surface fluid mass redistribution of the atmosphere, ocean and hydrology.
Erhu Wei   +5 more
doaj   +2 more sources

Large-uncertainty intelligent states for angular momentum and angle [PDF]

open access: yes, 2005
The equality in the uncertainty principle for linear momentum and position is obtained for states which also minimize the uncertainty product. However, in the uncertainty relation for angular momentum and angular position both sides of the inequality are
Götte, Jörg B.   +3 more
core   +7 more sources

On the six components of optical angular momentum [PDF]

open access: yes, 2011
In special relativity the angular momentum is a rank-two antisymmetric tensor with six independent components. Three of these are the familiar generators of spatial rotation, which for light have been studied at length.
Barnett, Stephen M.
core   +8 more sources

Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks [PDF]

open access: yes, 2012
The Shannon dimensionality of orbital-angular-momentum (OAM) entanglement produced in spontaneous parametric down-conversion can be probed by using multi-sector phase analysers [1].
Padgett, M.J.   +10 more
core   +4 more sources

Structure and Dynamics of the Ras al Hadd Oceanic Dipole in the Arabian Sea

open access: yesOceans, 2021
The Ras al Hadd oceanic dipole is a recurrent association of a cyclone (to the northeast) and of an anticyclone (to the southwest), which forms in summer and breaks up at the end of autumn.
Adam Ayouche   +6 more
doaj   +1 more source

Stratosphere-troposphere exchange: An angular momentum perspective [PDF]

open access: yes, 2007
The exchange of axial angular momentum (AM) between stratosphere and troposphere forms an important part of stratosphere–troposphere exchange (STE). Data are used to quantify the related fluxes through an idealized tropopause for specific flux events ...
Egger, Joseph   +3 more
core   +1 more source

Optical Angular Momentum

open access: yes, 2003
Spin angular momentum of photons, and the associated polarisation of light, has been known of for many years. However, it is only over the last decade or so that physically realisable laboratory light beams have been used to study the orbital angular ...
Padgett, M.J., Allen, L., Barnett, S.M.
core   +4 more sources

Determining and Evaluating the Hydrological Signal in Polar Motion Excitation from Gravity Field Models Obtained from Kinematic Orbits of LEO Satellites

open access: yesRemote Sensing, 2019
This study evaluates the gravity field solutions based on high-low satellite-to-satellite tracking (hl-SST) of low-Earth-orbit (LEO) satellites: GRACE, Swarm, TerraSAR-X, TanDEM-X, MetOp-A, MetOp-B, and Jason 2, by converting them into hydrological polar
Justyna Śliwińska, Jolanta Nastula
doaj   +1 more source

Mass-related excitation of polar motion: an assessment of the new RL06 GRACE gravity field models

open access: yesEarth, Planets and Space, 2018
The new Release-06 (RL06) Gravity Recovery and Climate Experiment (GRACE) gravity field solutions are evaluated by converting them into equatorial effective angular momentum functions (so-called excitation functions) for polar motion and comparing these ...
Franziska Göttl   +2 more
doaj   +1 more source

Semi‐decadal and decadal signals in atmospheric excitation of length‐of‐day

open access: yesEarth 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

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