Results 161 to 170 of about 1,386 (209)
Approaching a realistic force balance in geodynamo simulations
Proceedings of the National Academy of Sciences of the United States of America, 2016 Earth sustains its magnetic field by a dynamo process driven by convection in the liquid outer core. Geodynamo simulations have been successful in reproducing many observed properties of the geomagnetic field. However, although theoretical considerations
Rakesh K Yadav, T Gastine, Scott J Wolk
exaly +2 more sources
The signature of inner-core nucleation on the geodynamo
Earth and Planetary Science Letters, 2017 International audienceEnergy considerations indicate that the power delivered to the present-day geodynamo comes mainly from the growth of the solid inner core, through light element and latent heat releases.
Maylis Landeau +2 more
exaly +2 more sources
Intrinsic paleointensity bias and the long-term history of the geodynamo
Science Advances, 2017 Many geodynamo models predict an inverse relationship between geomagnetic reversal frequency and field strength. However, most of the absolute paleointensity data, obtained predominantly by the Thellier method from bulk volcanic rocks, fail to confirm ...
Aleksey V Smirnov +2 more
exaly +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
EFFECT OF STRONG EARTHQUAKES ON THE GEODYNAMO
Доклады Российской академии наук. Науки о Земле, 2023Using the data of magnetic observations performed at the INTERMAGNET network observatories during the period of the double earthquake on March 16, 2022 (Japan), the global nature of the induced geomagnetic variations was demonstrated. Their synchronism and comparable amplitude over a wide range of distances from 210 km to ~10 000 km, the delay time ...
V. V. Adushkin, A. A. Spivak
openaire +1 more source
Paleomagnetism and the Nature of the Geodynamo
Science, 1990Records of direct observations of the earth's magnetic field cover less than a ten-millionth of the known lifetime of the field. Thus our knowledge of several geomagnetic phenomena, critical to our understanding of the geodynamo, must come from the paleomagnetic record.
R T, Merrill, P L, McFadden
openaire +2 more sources
Contemporary Physics, 1997
Three-dimensional numerical simulations of convection and magnetic field generation in the Earth's core now span several hundred thousand years; the magnetic field created during most of this time has an intensity, structure and time dependence similar to the present geomagnetic field. Five models are described here.
Gary A. Glatzmaier, Paul H. Roberts
openaire +1 more source
Three-dimensional numerical simulations of convection and magnetic field generation in the Earth's core now span several hundred thousand years; the magnetic field created during most of this time has an intensity, structure and time dependence similar to the present geomagnetic field. Five models are described here.
Gary A. Glatzmaier, Paul H. Roberts
openaire +1 more source
1999
The main part of the geomagnetic field is generated by self-induction in the Earth’s molten core. The geodynamo mechanism is not yet fully understood as an M.H.D. problem even though we have many constraints coming from observations, as well as from geophysical and geo-chemical theories. This Earth’s science problem combines many of the difficulties we
D. Jault, P. Cardin, H. C. Nataf
openaire +1 more source
The main part of the geomagnetic field is generated by self-induction in the Earth’s molten core. The geodynamo mechanism is not yet fully understood as an M.H.D. problem even though we have many constraints coming from observations, as well as from geophysical and geo-chemical theories. This Earth’s science problem combines many of the difficulties we
D. Jault, P. Cardin, H. C. Nataf
openaire +1 more source
Computational aspects of geodynamo simulations
Computing in Science & Engineering, 2000For almost 50 years, researchers have attempted to understand the geodynamo, a mechanism that maintains the Earth's geomagnetic field. The authors discuss their results using the Glatzmaier-Roberts model to create numerical simulations of the geodynamo (G.A. Glatzmaier and P.H. Roberts, 1995).
Gary A. Glatzmaier, Thomas C. Clune
openaire +1 more source
Earth's Core and the Geodynamo
Science, 2000Earth's magnetic field is generated by fluid motion in the liquid iron core. Details of how this occurs are now emerging from numerical simulations that achieve a self-sustaining magnetic field. Early results predict a dominant dipole field outside the core, and some models even reproduce magnetic reversals.
openaire +2 more sources
On the theory of the geodynamo
Physics of the Earth and Planetary Interiors, 1996Abstract I trace the development of geodynamo theory leading from Larmor's original hypothesis (Larmor, 1919, Rep. Br. Assoc. Adv. Sci., A, 159–160) to the present. I consider a number of kinematic results, from Cowling's proof (Cowling, 1934, Mon. Not. R. Astron.
openaire +1 more source