Luo, Jia Liu, Haifeng Xu, Xiaohua
Published in
Earth, Planets and Space
The S4max data retrieved from the Constellation Observing System for the Meteorology, Ionosphere, and Climate (COSMIC) radio occultation (RO) measurements during 2007 to 2015 is adopted to investigate the global distribution and seasonal variation of the sporadic E (Es) layers in the present work. The long-term and short-term global Es occurrence m...
Fournier, Alexandre Aubert, Julien Lesur, Vincent Thébault, Erwan
Published in
Earth, Planets and Space
Each International Geomagnetic Reference Field (IGRF) model released under the auspices of the International Association of Geomagnetism and Aeronomy comprises a secular variation component that describes the evolution of the main magnetic field anticipated for the 5 years to come. Every Gauss coefficient, up to spherical harmonic degree and order ...
Green, Theodore Slotznick, Sarah P. Jaqueto, Plinio Raub, Timothy D. Tohver, Eric Playton, Ted E. Haines, Peter W. Kirschvink, Joseph L. Hocking, Roger M. Montgomery, Paul
...
Published in
Frontiers in Earth Science
Late Devonian time was a period of rapid upheaval in the Earth system, including climate change, sea level changes, widespread ocean anoxia, and the Frasnian-Famennian mass extinction; the cause(s) of these changes remain(s) uncertain. The Lennard Shelf of the Canning Basin in Western Australia contains carbonate reef sections spanning much of the ...
Zein, Beate Long, Jed A. Safi, Kamran Kölzsch, Andrea Wikelski, Martin Kruckenberg, Helmut Demšar, Urška
Published in
Movement Ecology
BackgroundDifferent theories suggest birds may use compass or map navigational systems associated with Earth’s magnetic intensity or inclination, especially during migratory flights. These theories have only been tested by considering properties of the Earth’s magnetic field at coarse temporal scales, typically ignoring the temporal dynamics of geo...
Benitez-Paez, Fernando Brum-Bastos, Vanessa da Silva Beggan, Ciarán D. Long, Jed A. Demšar, Urška
Published in
Movement Ecology
BackgroundMigratory animals use information from the Earth’s magnetic field on their journeys. Geomagnetic navigation has been observed across many taxa, but how animals use geomagnetic information to find their way is still relatively unknown. Most migration studies use a static representation of geomagnetic field and do not consider its temporal ...
Sanchez, Sabrina Wicht, Johannes Bärenzung, Julien
Published in
Earth, Planets and Space
The IGRF offers an important incentive for testing algorithms predicting the Earth’s magnetic field changes, known as secular variation (SV), in a 5-year range. Here, we present a SV candidate model for the 13th IGRF that stems from a sequential ensemble data assimilation approach (EnKF). The ensemble consists of a number of parallel-running 3D-dyn...
Labbe, Aimé
L'imagerie par résonance magnétique (IRM) est une modalité qui offre de bons contrastes et une bonne résolution spatiale, mais qui souffre d'un important problème de sensibilité. Pour répondre à cette problématique, le paradigme actuel est d'accroitre le champ magnétique des aimants d'IRM. Ceci mène toutefois à une explosion des coûts et à des cont...
Chakravarty, Pritish Maalberg, Maiki Cozzi, Gabriele Ozgul, Arpat Aminian, Kamiar
Published in
Movement Ecology
BackgroundAnimal-borne data loggers today often house several sensors recording simultaneously at high frequency. This offers opportunities to gain fine-scale insights into behaviour from individual-sensor as well as integrated multi-sensor data. In the context of behaviour recognition, even though accelerometers have been used extensively, magneto...
Adhikari, Binod Kaphle, Bidur Adhikari, Niraj Limbu, Sanam Sunar, Aashish Mishra, Roshan Kumar Adhikari, Sarala
Published in
SN Applied Sciences
This paper studies the impacts of interplanetary coronal mass ejections (ICMEs) preceding storm (November 18–22, 2003) on several space weather components. The comprehensive study of different parameters such as solar wind speed, density, plasma temperature, plasma pressure, auroral electrojet, SYM-H, energy transfer, components of Earth’s magnetic...
Beggan, Ciarán D.
Published in
Frontiers for Young Minds
The Earth has a solid inner core and a liquid outer core, both made of iron and nickel. The metal carries an electrical current that is powered by the movement of the liquid. The electrical current creates a magnetic field that reaches out from the core to the surface of the Earth and beyond. The magnetic field formed by the Earth’s core is expecte...
