Results 81 to 90 of about 737 (157)

Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary [PDF]

, 2007
Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick, Rushmer, Tracy, Yuen, D.A.   +2 more
core   +1 more source

A core-surface flow model derived from magnetic data of Macau Science Satellite-1

Earth and Planetary Physics
The core-surface flow is crucial for understanding the dynamics of the Earth’s outer core and geomagnetic secular variations. Conventional core flow models often use a single set of spherical harmonic coefficients to represent the flow both inside and ...
JinFeng Li, YuFeng Lin, HongBo Yao, JuYuan Xu, Keke Zhang   +4 more
doaj   +1 more source

Dynamic Mode Decomposition of the Core Surface Flow Inverted From Geomagnetic Field Models

Geophysical Research Letters
Continuous satellite measurements of the Earth's magnetic field have advanced the characterization of spatial‐temporal variations of the main field over the past two decades.
Jinfeng Li, Yufeng Lin, Keke Zhang
doaj   +1 more source

Empiric Models of the Earth's Free Core Nutation

, 2009
Free core nutation (FCN) is the main factor that limits the accuracy of the modeling of the motion of Earth's rotational axis in the celestial coordinate system. Several FCN models have been proposed.
A. A. Brzeziński, G.A. Krasinsky, G.A. Krasinsky, J. Hinderer, J. Vondrák, M. Schmidt, T. Shirai, T. Shirai, T. Shirai, T.A. Herring, W. Schlueter, Z. M. Malkin   +11 more
core   +1 more source

Geomagnetic jerks [PDF]

, 2007
Macmillan, Susan, British Geological Survey   +1 more
openaire   +3 more sources

Identification of the magnetic external component in annual and monthly means of magnetic observatory data series [PDF]

, 2012
Tese de mestrado em Ciências Geofísicas (Geofísica Interna), apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2012O campo geomagnético medido nos observatórios magnéticos à superfície da Terra contém contribuições de fontes ...
Saturnino, Diana Filipa Lourenço
core  

Core Surface Flow Changes Associated With the 2017 Pacific Geomagnetic Jerk. [PDF]

Geophys Res Lett, 2022
Whaler KA, Hammer MD, Finlay CC, Olsen N.   +3 more
europepmc   +1 more source

The scientific case for magnetic field satellites [PDF]

To make full use of modern magnetic data and the paleomagnetic record, we must greatly improve our understanding of how the geodynamo system works. It is clearly nonlinear, probably chaotic, and its dimensionless parameters cannot yet be reproduced on a ...
Backus, George E., Benton, Edward R., Harrison, Christopher G. A., Heirtzler, James R.   +3 more
core   +1 more source

A radiocarbon spike at 14 300 cal yr BP in subfossil trees provides the impulse response function of the global carbon cycle during the Late Glacial. [PDF]

Philos Trans A Math Phys Eng Sci, 2023
Bard E, Miramont C, Capano M, Guibal F, Marschal C, Rostek F, Tuna T, Fagault Y, Heaton TJ.   +8 more
europepmc   +1 more source

Report of the panel on earth structure and dynamics, section 6 [PDF]

The panel identified problems related to the dynamics of the core and mantle that should be addressed by NASA programs. They include investigating the geodynamo based on observations of the Earth's magnetic field, determining the rheology of the mantle ...
Dziewonski, Adam M., Mcadoo, David C., Oconnell, Richard J., Smylie, Douglas E., Yoder, Charles F.   +4 more
core   +1 more source