Constraints from material properties on the dynamics and evolution of Earth's core
The Earth's magnetic field is powered by energy supplied by the slow cooling and freezing
of the liquid iron core. Efforts to determine the thermal and chemical history of the core have …
of the liquid iron core. Efforts to determine the thermal and chemical history of the core have …
Rapid variations of Earth's core magnetic field
Evidence of fast variations in the Earth's core field are seen both in magnetic observatory
and satellite records. We present here how they have been identified at the Earth's surface …
and satellite records. We present here how they have been identified at the Earth's surface …
Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model
We use more than 2 years of magnetic data from the Swarm mission, and monthly means
from 160 ground observatories as available in March 2016, to update the CHAOS time …
from 160 ground observatories as available in March 2016, to update the CHAOS time …
Geomagnetic jerks and rapid hydromagnetic waves focusing at Earth's core surface
Geomagnetic jerks are abrupt changes in the second time derivative—the secular
acceleration—of Earth's magnetic field that punctuate ground observatory records. As their …
acceleration—of Earth's magnetic field that punctuate ground observatory records. As their …
Planetary gyre, time‐dependent eddies, torsional waves, and equatorial jets at the Earth's core surface
We report a calculation of time‐dependent quasi‐geostrophic core flows for 1940–2010.
Inverting recursively for an ensemble of solutions, we evaluate the main source of …
Inverting recursively for an ensemble of solutions, we evaluate the main source of …
Regional stratification at the top of Earth's core due to core–mantle boundary heat flux variations
Earth's magnetic field is generated by turbulent motion in its fluid outer core. Although the
bulk of the outer core is vigorously convecting and well mixed, some seismic, geomagnetic …
bulk of the outer core is vigorously convecting and well mixed, some seismic, geomagnetic …
The Kalmag model as a candidate for IGRF-13
J Baerenzung, M Holschneider, J Wicht, V Lesur… - Earth, Planets and …, 2020 - Springer
We present a new model of the geomagnetic field spanning the last 20 years and called
Kalmag. Deriving from the assimilation of CHAMP and Swarm vector field measurements, it …
Kalmag. Deriving from the assimilation of CHAMP and Swarm vector field measurements, it …
Dynamo-based limit to the extent of a stable layer atop Earth's core
The existence of a stably stratified layer underneath the core–mantle boundary (CMB) has
been recently revived by corroborating evidences coming from seismic studies, mineral …
been recently revived by corroborating evidences coming from seismic studies, mineral …
Time-dependent low-latitude core flow and geomagnetic field acceleration pulses
We present a new model of time-dependent flow at low latitudes in the Earth's core between
2000 and 2018 derived from magnetic field measurements made on board the Swarm and …
2000 and 2018 derived from magnetic field measurements made on board the Swarm and …
Multidisciplinary constraints on the thermal‐chemical boundary between Earth's core and mantle
Heat flux from the core to the mantle provides driving energy for mantle convection thus
powering plate tectonics, and contributes a significant fraction of the geothermal heat …
powering plate tectonics, and contributes a significant fraction of the geothermal heat …