New Magnetic Field Models of the Moon
We use L1-norm model regularization of |Br| component at the surface on magnetic monopoles bases and along-track magnetic field differences alone (without vector observations) to derive high quality global magnetic field models at the surface of the Moon. The practical advantages to this strategy ar...
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ftunivkentucky:oai:uknowledge.uky.edu:ees_data-1001 2023-05-15T17:39:16+02:00 New Magnetic Field Models of the Moon Ravat, Dhananjay Purucker, Michael E. Olsen, Nils 2020-02-03T08:00:00Z application/zip https://uknowledge.uky.edu/ees_data/2 https://uknowledge.uky.edu/context/ees_data/article/1001/type/native/viewcontent unknown UKnowledge Ravat, D., Purucker, M. E., & Olsen, N. (2020). Lunar magnetic field models from Lunar Prospector and SELENE/Kaguya along‐track magnetic field gradients. Journal of Geophysical Research: Planets , 125, e2019JE006187. https://doi.org/10.1029/2019JE006187 https://uknowledge.uky.edu/ees_data/2 https://uknowledge.uky.edu/context/ees_data/article/1001/type/native/viewcontent © 2020 Ravat, Purucker, and Olsen This dataset is distributed under Creative Commons Public Domain Dedication ( https://creativecommons.org/share-your-work/public-domain/cc0/ ), which permits unrestricted use, distribution, and reproduction in any medium. PDM CC0 Earth and Environmental Sciences Research Data Moon Lunar magnetic field Magnetization Earth Sciences Geology Geophysics and Seismology text 2020 ftunivkentucky 2021-05-31T13:51:45Z We use L1-norm model regularization of |Br| component at the surface on magnetic monopoles bases and along-track magnetic field differences alone (without vector observations) to derive high quality global magnetic field models at the surface of the Moon. The practical advantages to this strategy are: monopoles are more stable at closer spacing in comparison to dipoles, improving spatial resolution; L1-norm model regularization leads to sparse models which may be appropriate for the Moon which has regions of localized magnetic field features; and along-track differences reduce the need for ad-hoc external field noise reduction strategies. We examine also the use of Lunar Prospector (LP) and SELENE/Kaguya magnetometer data, combined and separately, and find that the LP along-track vector field differences lead to surface field models that require weaker regularization and, hence, result in higher spatial resolution. Significantly higher resolution and higher amplitude surface magnetic fields can be derived over localized regions of high amplitude anomalies (due to their higher signal-to-noise ratio). These high resolution field models are also compared with the results of Surface Vector Mapping (SVM) approach of Tsunakawa et al. (2015). Finally, the monopoles- as well as dipole-based patterns of the Serenitatis high amplitude magnetic feature has characteristic textbook patterns of Br and B component fields from a nearly vertically downwardly magnetized source region and it implies that the principal source of the anomaly was formed when the region was much closer to the north magnetic pole of the Moon. Text North Magnetic Pole University of Kentucky: UKnowledge Journal of Geophysical Research: Planets 125 7 |
institution |
Open Polar |
collection |
University of Kentucky: UKnowledge |
op_collection_id |
ftunivkentucky |
language |
unknown |
topic |
Moon Lunar magnetic field Magnetization Earth Sciences Geology Geophysics and Seismology |
spellingShingle |
Moon Lunar magnetic field Magnetization Earth Sciences Geology Geophysics and Seismology Ravat, Dhananjay Purucker, Michael E. Olsen, Nils New Magnetic Field Models of the Moon |
topic_facet |
Moon Lunar magnetic field Magnetization Earth Sciences Geology Geophysics and Seismology |
description |
We use L1-norm model regularization of |Br| component at the surface on magnetic monopoles bases and along-track magnetic field differences alone (without vector observations) to derive high quality global magnetic field models at the surface of the Moon. The practical advantages to this strategy are: monopoles are more stable at closer spacing in comparison to dipoles, improving spatial resolution; L1-norm model regularization leads to sparse models which may be appropriate for the Moon which has regions of localized magnetic field features; and along-track differences reduce the need for ad-hoc external field noise reduction strategies. We examine also the use of Lunar Prospector (LP) and SELENE/Kaguya magnetometer data, combined and separately, and find that the LP along-track vector field differences lead to surface field models that require weaker regularization and, hence, result in higher spatial resolution. Significantly higher resolution and higher amplitude surface magnetic fields can be derived over localized regions of high amplitude anomalies (due to their higher signal-to-noise ratio). These high resolution field models are also compared with the results of Surface Vector Mapping (SVM) approach of Tsunakawa et al. (2015). Finally, the monopoles- as well as dipole-based patterns of the Serenitatis high amplitude magnetic feature has characteristic textbook patterns of Br and B component fields from a nearly vertically downwardly magnetized source region and it implies that the principal source of the anomaly was formed when the region was much closer to the north magnetic pole of the Moon. |
format |
Text |
author |
Ravat, Dhananjay Purucker, Michael E. Olsen, Nils |
author_facet |
Ravat, Dhananjay Purucker, Michael E. Olsen, Nils |
author_sort |
Ravat, Dhananjay |
title |
New Magnetic Field Models of the Moon |
title_short |
New Magnetic Field Models of the Moon |
title_full |
New Magnetic Field Models of the Moon |
title_fullStr |
New Magnetic Field Models of the Moon |
title_full_unstemmed |
New Magnetic Field Models of the Moon |
title_sort |
new magnetic field models of the moon |
publisher |
UKnowledge |
publishDate |
2020 |
url |
https://uknowledge.uky.edu/ees_data/2 https://uknowledge.uky.edu/context/ees_data/article/1001/type/native/viewcontent |
genre |
North Magnetic Pole |
genre_facet |
North Magnetic Pole |
op_source |
Earth and Environmental Sciences Research Data |
op_relation |
Ravat, D., Purucker, M. E., & Olsen, N. (2020). Lunar magnetic field models from Lunar Prospector and SELENE/Kaguya along‐track magnetic field gradients. Journal of Geophysical Research: Planets , 125, e2019JE006187. https://doi.org/10.1029/2019JE006187 https://uknowledge.uky.edu/ees_data/2 https://uknowledge.uky.edu/context/ees_data/article/1001/type/native/viewcontent |
op_rights |
© 2020 Ravat, Purucker, and Olsen This dataset is distributed under Creative Commons Public Domain Dedication ( https://creativecommons.org/share-your-work/public-domain/cc0/ ), which permits unrestricted use, distribution, and reproduction in any medium. |
op_rightsnorm |
PDM CC0 |
container_title |
Journal of Geophysical Research: Planets |
container_volume |
125 |
container_issue |
7 |
_version_ |
1766140037955584000 |