Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies
The compiled near-surface data and satellite crustal magnetic measured data are modeled with a regionally concentrated spherical harmonic presentation technique over Australia and Antarctica. Global crustal magnetic anomaly studies have used a spherical harmonic analysis to represent the Earth'...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140013360 2023-05-15T13:59:55+02:00 Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies von Frese, Ralph R. B. Kim, Hyung Rae Taylor, Patrick T. Unclassified, Unlimited, Publicly available September 9, 2013 application/pdf http://hdl.handle.net/2060/20140013360 unknown Document ID: 20140013360 http://hdl.handle.net/2060/20140013360 Copyright, Distribution as joint owner in the copyright CASI Geosciences (General) GSFC-E-DAA-TN11100 ESA Living Planet Symposium 9-13 Sept. 2013; Edinburgh; United Kingdom 2013 ftnasantrs 2019-07-21T06:13:10Z The compiled near-surface data and satellite crustal magnetic measured data are modeled with a regionally concentrated spherical harmonic presentation technique over Australia and Antarctica. Global crustal magnetic anomaly studies have used a spherical harmonic analysis to represent the Earth's magnetic crustal field. This global approach, however is best applied where the data are uniformly distributed over the entire Earth. Satellite observations generally meet this requirement, but unequally distributed data cannot be easily adapted in global modeling. Even for the satellite observations, due to the errors spread over the globe, data smoothing is inevitable in the global spherical harmonic presentations. In addition, global high-resolution modeling requires a great number of global spherical harmonic coefficients for the regional presentation of crustal magnetic anomalies, whereas a lesser number of localized spherical coefficients will satisfy. We compared methods in both global and regional approaches and for a case where the errors were propagated outside the region of interest. For observations from the upcoming Swarm constellation, the regional modeling will allow the production a lesser number of spherical coefficients that are relevant to the region of interest Other/Unknown Material Antarc* Antarctica NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
topic |
Geosciences (General) |
spellingShingle |
Geosciences (General) von Frese, Ralph R. B. Kim, Hyung Rae Taylor, Patrick T. Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
topic_facet |
Geosciences (General) |
description |
The compiled near-surface data and satellite crustal magnetic measured data are modeled with a regionally concentrated spherical harmonic presentation technique over Australia and Antarctica. Global crustal magnetic anomaly studies have used a spherical harmonic analysis to represent the Earth's magnetic crustal field. This global approach, however is best applied where the data are uniformly distributed over the entire Earth. Satellite observations generally meet this requirement, but unequally distributed data cannot be easily adapted in global modeling. Even for the satellite observations, due to the errors spread over the globe, data smoothing is inevitable in the global spherical harmonic presentations. In addition, global high-resolution modeling requires a great number of global spherical harmonic coefficients for the regional presentation of crustal magnetic anomalies, whereas a lesser number of localized spherical coefficients will satisfy. We compared methods in both global and regional approaches and for a case where the errors were propagated outside the region of interest. For observations from the upcoming Swarm constellation, the regional modeling will allow the production a lesser number of spherical coefficients that are relevant to the region of interest |
format |
Other/Unknown Material |
author |
von Frese, Ralph R. B. Kim, Hyung Rae Taylor, Patrick T. |
author_facet |
von Frese, Ralph R. B. Kim, Hyung Rae Taylor, Patrick T. |
author_sort |
von Frese, Ralph R. B. |
title |
Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
title_short |
Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
title_full |
Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
title_fullStr |
Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
title_full_unstemmed |
Region Spherical Harmonic Magnetic Modeling from Near-Surface and Satellite-Altitude Anomlaies |
title_sort |
region spherical harmonic magnetic modeling from near-surface and satellite-altitude anomlaies |
publishDate |
2013 |
url |
http://hdl.handle.net/2060/20140013360 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
CASI |
op_relation |
Document ID: 20140013360 http://hdl.handle.net/2060/20140013360 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766268840719679488 |