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 …
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 …
Extending comprehensive models of the Earth's magnetic field with Ørsted and CHAMP data
TJ Sabaka, N Olsen, ME Purucker - Geophysical Journal …, 2004 - academic.oup.com
A new model of the quiet-time, near-Earth magnetic field has been derived using a
comprehensive approach, which includes not only POGO and Magsat satellite data, but also …
comprehensive approach, which includes not only POGO and Magsat satellite data, but also …
Detection of a large-scale mass redistribution in the terrestrial system since 1998
CM Cox, BF Chao - Science, 2002 - science.org
Earth's dynamic oblateness (J 2) had been undergoing a decrease, according to space
geodetic observations over the past 25 years, until around 1998, when it switched quite …
geodetic observations over the past 25 years, until around 1998, when it switched quite …
Large-scale flow in the core
Timescales of processes in the Earth tend in general to be very short (eg, the rupture
associated with an earthquake) or very long (millions of years or longer)(eg, the movement …
associated with an earthquake) or very long (millions of years or longer)(eg, the movement …
The origin of geomagnetic jerks
J Bloxham, S Zatman, M Dumberry - Nature, 2002 - nature.com
Geomagnetic jerks, which in the second half of the twentieth century occurred in 1969 (refs,),
1978 (refs,), 1991 (ref.) and 1999 (ref.), are abrupt changes in the second time-derivative …
1978 (refs,), 1991 (ref.) and 1999 (ref.), are abrupt changes in the second time-derivative …
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 …
Core field acceleration pulse as a common cause of the 2003 and 2007 geomagnetic jerks
Using observatory data, we report the detection of a geomagnetic jerk in 2007, which we
relate to a jump in the second derivative of the geomagnetic field previously noted in satellite …
relate to a jump in the second derivative of the geomagnetic field previously noted in satellite …
[PDF][PDF] Spectral mixture analysis for monitoring and mapping desertification processes in semi-arid areas in North Kordofan State, Sudan
MA Khiry - 2007 - e-docs.geo-leo.de
Das Letzte Interglazial (Riß/Würm oder Warthe/Weichsel= Eem-Interglazial) ist
pollenanalytisch und durch die marine Eem-Fauna, auf dem Lande durch die letzte Antiquus …
pollenanalytisch und durch die marine Eem-Fauna, auf dem Lande durch die letzte Antiquus …
[HTML][HTML] Jerks abound: An analysis of geomagnetic observatory data from 1957 to 2008
We present a two-step method for the removal of external field signals and the identification
of geomagnetic jerks in magnetic observatory monthly mean data, providing quantitative …
of geomagnetic jerks in magnetic observatory monthly mean data, providing quantitative …