| Morschhauser A, Vervelidou F, Thomas P, Grott M, Lesur V and Gilder S (2018),
"Mars' Crustal Magnetic Field", In Magnetic Fields in the Solar System. Vol. 448, pp. 331-353. Springer International Publishing AG. |
| Abstract: Fossil magnetic fields within the Martian crust record the history of the planet's ancient dynamo and hence retain valuable information on the thermal and chemical evolution of Mars. In order to decode this information, we have derived a spherical harmonic model of the crustal magnetic field. This model was derived from satellite vector magnetometer data, and allows to study the crustal magnetic field at high resolution down to surface altitudes. Based on this model, we calculate the required magnetization of the Martian crust, and discuss how the resulting strong magnetization might be explained. Further, we study the magnetization of impact craters and volcanoes, and conclude that the Martian core dynamo shut down most probably in the Noachian, at about 4.1 Gyr ago. Finally, we address the derivation of magnetic paleopole positions. In a first step, we use synthetic tests in order to outline under which constraints paleopole positions can be determined from satellite measurements. In a second step, we use these insights to present a scheme to estimate paleopole positions including an assessment of their underlying uncertainties. |
BibTeX:
@inbook{Morschhauser:2018,
author = {Morschhauser, A. and Vervelidou, F. and Thomas, P. and Grott, M. and Lesur, V. and Gilder, S.A.},
editor = {Luehr, H. and Wicht, J. and Gilder, S.A. and Holschneider, M.},
title = {Mars' Crustal Magnetic Field},
booktitle = {Magnetic Fields in the Solar System},
publisher = {Springer International Publishing AG},
year = {2018},
volume = {448},
pages = {331-353},
doi = {10.1007/978-3-319-64292-5_12}
}
|
| Prokhorov B, Foerster M, Lesur V, Namgaladze AA, Holschneider M and Stolle C (2018),
"Modeling the Ionospheric Current System and Calculating Its contribution to the Earth's Magnetic Field", In Magnetic Fields in the Solar System. Vol. 448(10), pp. 263-292. Springer International Publishing AG. |
| Abstract: The additional magnetic field produced by the ionospheric current system is a part of the Earth's magnetic field. This current system is a highly variable part of a global electric circuit. The solar wind and interplanetary magnetic field (IMF) interaction with the Earth's magnetosphere is the external driver for the global electric circuit in the ionosphere. The energy is transferred via the field-aligned currents (FACs) to the Earth's ionosphere. The interactions between the neutral and charged particles in the ionosphere lead to the so-called thermospheric neutral wind dynamo which represents the second important driver for the global current system. Both processes are components of the magnetosphere--ionosphere--thermosphere (MIT) system, which depends on solar and geomagnetic conditions, and have significant seasonal and UT variations. The modeling of the global dynamic Earth's ionospheric current system is the first aim of this investigation. For our study, we use the Potsdam version of the Upper Atmosphere Model (UAM-P). The UAM is a first-principle, time-dependent, and fully self-consistent numerical global model. The model includes the thermosphere, ionosphere, plasmasphere, and inner magnetosphere as well as the electrodynamics of the coupled MIT system for the altitudinal range from 80 (60) km up to the 15 Earth radii. The UAM-P differs from the UAM by a new electric field block. For this study, the lower latitudinal and equatorial electrodynamics of the UAM-P model was improved. The calculation of the ionospheric current system's contribution to the Earth's magnetic field is the second aim of this study. We present the method, which allows computing the additional magnetic field inside and outside the current layer as generated by the space current density distribution using the Biot-Savart law. Additionally, we perform a comparison of the additional magnetic field calculation using 2D (equivalent currents) and 3D current distribution. |
BibTeX:
@inbook{Prokhorov:2018,
author = {Prokhorov, B. and Foerster, M. and Lesur, V. and Namgaladze, A. A. and Holschneider, M. and Stolle, C.},
editor = {Luehr, H. and Wicht, J. and Gilder, S.A. and Holschneider, M.},
title = {Modeling the Ionospheric Current System and Calculating Its contribution to the Earth's Magnetic Field},
booktitle = {Magnetic Fields in the Solar System},
publisher = {Springer International Publishing AG},
year = {2018},
volume = {448},
number = {10},
pages = {263-292},
doi = {10.1007/978-3-319-64292-5_10}
}
|
| Menvielle M, Iyemori T, Marchaudon A and Nosé M (2010),
"Geomagnetic Indices", In Geomagnetic Observations and Models. , pp. 183-228. Springer Nature. |
BibTeX:
@incollection{Menvielle:2010,
author = {Michel Menvielle and Toshihiko Iyemori and Aurélie Marchaudon and Masahito Nosé},
title = {Geomagnetic Indices},
booktitle = {Geomagnetic Observations and Models},
publisher = {Springer Nature},
year = {2010},
pages = {183--228},
url = {https://doi.org/10.1007/978-90-481-9858-0_8},
doi = {10.1007/978-90-481-9858-0_8}
}
|
| Schott Jean-Jacques and Thébault E (2010),
"Modelling the Earth's Magnetic Field from Global to Regional Scales", In Geomagnetic Observations and Models. , pp. 229-264. Springer Nature. |
BibTeX:
@incollection{Schott:2010,
author = {Jean-Jacques Schott and Erwan Thébault},
title = {Modelling the Earth's Magnetic Field from Global to Regional Scales},
booktitle = {Geomagnetic Observations and Models},
publisher = {Springer Nature},
year = {2010},
pages = {229--264},
url = {https://doi.org/10.1007/978-90-481-9858-0_9},
doi = {10.1007/978-90-481-9858-0_9}
}
|
| Schott JJ and Rasson J (2007),
"Magnetic observatories in Antarctica", In Encyclopedia of Geomagnetism and Paleomagnetism. Berlin D. Gubbins and E. Herrero-Bervera (Eds.) Springer. |
BibTeX:
@incollection{Schott:2007b,
author = {Schott, J. J. and J. Rasson},
title = {Magnetic observatories in Antarctica},
booktitle = {Encyclopedia of Geomagnetism and Paleomagnetism},
publisher = {D. Gubbins and E. Herrero-Bervera (Eds.) Springer},
year = {2007},
url = {https://link.springer.com/referenceworkentry/10.1007%2F978-1-4020-4423-6_232},
doi = {10.1007/978-1-4020-4423-6_232}
}
|
| Menvielle M and Marchaudon A (2006),
"Geomagnetic indices in Solar-Terrestrial Physics and Space Weather", In Space Weather. , pp. 277-288. Springer. |
BibTeX:
@incollection{Menvielle:2006,
author = {Menvielle, M. and A. Marchaudon},
editor = {J. Lilensten},
title = {Geomagnetic indices in Solar-Terrestrial Physics and Space Weather},
booktitle = {Space Weather},
publisher = {Springer},
year = {2006},
pages = {277-288},
url = {https://link.springer.com/chapter/10.1007/1-4020-5446-7_24},
doi = {10.1007/1-4020-5446-7_24}
}
|