Persistent high paleosecular variation activity in southern hemisphere for at least 10 000 years
Direct observations of the geomagnetic field show that secular variation is strong in the
Atlantic hemisphere, and comparatively reduced in the Pacific region. The dipole has been …
Atlantic hemisphere, and comparatively reduced in the Pacific region. The dipole has been …
Observations and models of the long-term evolution of Earth's magnetic field
J Aubert, JA Tarduno, CL Johnson - Space Science Reviews, 2010 - Springer
The geomagnetic signal contains an enormous temporal range—from geomagnetic jerks on
time scales of less than a year to the evolution of Earth's dipole moment over billions of …
time scales of less than a year to the evolution of Earth's dipole moment over billions of …
The magnetic field of planet Earth
The magnetic field of the Earth is by far the best documented magnetic field of all known
planets. Considerable progress has been made in our understanding of its characteristics …
planets. Considerable progress has been made in our understanding of its characteristics …
Towards more realistic core-mantle boundary heat flux patterns: a source of diversity in planetary dynamos
Mantle control on planetary dynamos is often studied by imposing heterogeneous core-
mantle boundary (CMB) heat flux patterns on the outer boundary of numerical dynamo …
mantle boundary (CMB) heat flux patterns on the outer boundary of numerical dynamo …
Quantitative estimates of average geomagnetic axial dipole dominance in deep geological time
A defining characteristic of the recent geomagnetic field is its dominant axial dipole which
provides its navigational utility and dictates the shape of the magnetosphere. Going back …
provides its navigational utility and dictates the shape of the magnetosphere. Going back …
Geomagnetic field hemispheric asymmetry and archeomagnetic jerks
Y Gallet, G Hulot, A Chulliat, A Genevey - Earth and Planetary Science …, 2009 - Elsevier
We investigate the origin of the so-called archeomagnetic jerks detected in the French
archeomagnetic record over the past three millennia. Although only very large-scale global …
archeomagnetic record over the past three millennia. Although only very large-scale global …
[HTML][HTML] An assessment of long duration geodynamo simulations using new paleomagnetic modeling criteria (QPM)
Long-term temporal variations of the magnetic field (timescales> 10 Myr), characterized from
paleomagnetic data, have been hypothesized to reflect the evolution of Earth's deep interior …
paleomagnetic data, have been hypothesized to reflect the evolution of Earth's deep interior …
Paleosecular variation and the time‐averaged geomagnetic field since 10 Ma
WP de Oliveira, GA Hartmann… - Geochemistry …, 2021 - Wiley Online Library
Investigations into long‐term geomagnetic variations provide useful information regarding
paleomagnetic field behavior. In this study, we assess the latitudinal structure of …
paleomagnetic field behavior. In this study, we assess the latitudinal structure of …
[HTML][HTML] The P-wave boundary of the large-low shear velocity province beneath the Pacific
Abstract The Large Low Shear Velocity Provinces (LLSVPs) in the lower mantle represent
volumetrically significant thermal or chemical or thermo-chemical heterogeneities. Their …
volumetrically significant thermal or chemical or thermo-chemical heterogeneities. Their …
Preferred locations of weak surface field in numerical dynamos with heterogeneous core–mantle boundary heat flux: consequences for the South Atlantic Anomaly
F Terra-Nova, H Amit, G Choblet - Geophysical Journal …, 2019 - academic.oup.com
The present-day geomagnetic field is characterized by a region of weak surface intensity,
the so-called South Atlantic Anomaly (SAA). We identify the locations of surface intensity …
the so-called South Atlantic Anomaly (SAA). We identify the locations of surface intensity …