Geomagnetic jerks: rapid core field variations and core dynamics
The secular variation of the core field is generally characterized by smooth variations,
sometimes interrupted by abrupt changes, named geomagnetic jerks. The origin of these …
sometimes interrupted by abrupt changes, named geomagnetic jerks. The origin of these …
An introduction to data assimilation and predictability in geomagnetism
Data assimilation in geomagnetism designates the set of inverse methods for geomagnetic
data analysis which rely on an underlying prognostic numerical model of core dynamics …
data analysis which rely on an underlying prognostic numerical model of core dynamics …
Swarm: A constellation to study the Earth's magnetic field
E Friis-Christensen, H Lühr, G Hulot - Earth, planets and space, 2006 - Springer
The Swarm mission was selected as the 5th mission in ESA's Earth Explorer Programme in
2004. The mission will provide the best ever survey of the geomagnetic field and its temporal …
2004. The mission will provide the best ever survey of the geomagnetic field and its temporal …
Laboratory‐based electrical conductivity in the Earth's mantle
Y Xu, TJ Shankland, BT Poe - Journal of Geophysical …, 2000 - Wiley Online Library
Recent laboratory measurements of electrical conductivity of mantle minerals are used in
forward calculations for mantle conditions of temperature and pressure. The electrical …
forward calculations for mantle conditions of temperature and pressure. The electrical …
Investigation of a secular variation impulse using satellite data: The 2003 geomagnetic jerk
Observatory monthly means provide an excellent opportunity to study the temporal changes
of the magnetic field at a given location. Unfortunately, the uneven distribution of the present …
of the magnetic field at a given location. Unfortunately, the uneven distribution of the present …
Fast equatorial waves propagating at the top of the Earth's core
A Chulliat, P Alken, S Maus - Geophysical Research Letters, 2015 - Wiley Online Library
Since 2000, magnetic field variations originating in the core have been dominated by
several pulses in the secular acceleration, leading to sharp geomagnetic “jerks” at the …
several pulses in the secular acceleration, leading to sharp geomagnetic “jerks” at the …
A geomagnetic jerk for the end of the 20th century?
M Mandea, E Bellanger, JL Le Mouël - Earth and Planetary Science Letters, 2000 - Elsevier
The series of magnetic measurements at some European observatories give some hint of a
new geomagnetic jerk around 1999. The geomagnetic impulses would present the …
new geomagnetic jerk around 1999. The geomagnetic impulses would present the …
Numerical models of the geodynamo and observational constraints
The past few years have seen the emergence of a large number of numerical simulations of
the geodynamo. In parallel, both new and old geomagnetic, archeomagnetic, and …
the geodynamo. In parallel, both new and old geomagnetic, archeomagnetic, and …
Geomagnetic jerks and a high-resolution length-of-day profile for core studies
R Holme, O De Viron - Geophysical Journal International, 2005 - academic.oup.com
By subtracting computed atmospheric angular momentum from a time-series for length-of-
day variations, we obtain a high-resolution time-series that is useful for studying the effects …
day variations, we obtain a high-resolution time-series that is useful for studying the effects …
Length of day decade variations, torsional oscillations and inner core superrotation: evidence from recovered core surface zonal flows
We consider the core surface flow derived from geomagnetic models [Bloxham, J., Jackson,
A., 1992. Time-dependent mapping of the magnetic field at the core–mantle boundary. J …
A., 1992. Time-dependent mapping of the magnetic field at the core–mantle boundary. J …