The sand grain and the butterfly. Instability in geodesy and geophysics

The problems of convergence of series in celestial mechanics and of certain series in geodesy (Molodensky's series and spherical harmonics) show similar features, involving a curious instability. This is imaginatively expressed as the « butterfly effect» in chaos theory and the «sand-grain effe...

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Main Author: H. Moritz
Format: Article
Language:English
Published: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 1997-06-01
Series:Annals of Geophysics
Subjects:
Online Access:http://www.annalsofgeophysics.eu/index.php/annals/article/view/3871
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author H. Moritz
author_facet H. Moritz
author_sort H. Moritz
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description The problems of convergence of series in celestial mechanics and of certain series in geodesy (Molodensky's series and spherical harmonics) show similar features, involving a curious instability. This is imaginatively expressed as the « butterfly effect» in chaos theory and the «sand-grain effect» for spherical harmonics. Similarly, the geodetic boundary-value problem (M.S. Molodensky, L. Hormander) and the KAM problem in nonlinear dynamics have a common mathematical structure: a «hard» inverse function problem. Such interrelations are reviewed in the present paper.
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spelling doaj.art-e7eebe2fcf3f44239d064dee07503c5c2022-12-22T00:22:59ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X1997-06-0140510.4401/ag-3871The sand grain and the butterfly. Instability in geodesy and geophysicsH. MoritzThe problems of convergence of series in celestial mechanics and of certain series in geodesy (Molodensky's series and spherical harmonics) show similar features, involving a curious instability. This is imaginatively expressed as the « butterfly effect» in chaos theory and the «sand-grain effect» for spherical harmonics. Similarly, the geodetic boundary-value problem (M.S. Molodensky, L. Hormander) and the KAM problem in nonlinear dynamics have a common mathematical structure: a «hard» inverse function problem. Such interrelations are reviewed in the present paper.http://www.annalsofgeophysics.eu/index.php/annals/article/view/3871Geodesygeophysicsgravity fieldinstabilitychaos theory
spellingShingle H. Moritz
The sand grain and the butterfly. Instability in geodesy and geophysics
Annals of Geophysics
Geodesy
geophysics
gravity field
instability
chaos theory
title The sand grain and the butterfly. Instability in geodesy and geophysics
title_full The sand grain and the butterfly. Instability in geodesy and geophysics
title_fullStr The sand grain and the butterfly. Instability in geodesy and geophysics
title_full_unstemmed The sand grain and the butterfly. Instability in geodesy and geophysics
title_short The sand grain and the butterfly. Instability in geodesy and geophysics
title_sort sand grain and the butterfly instability in geodesy and geophysics
topic Geodesy
geophysics
gravity field
instability
chaos theory
url http://www.annalsofgeophysics.eu/index.php/annals/article/view/3871
work_keys_str_mv AT hmoritz thesandgrainandthebutterflyinstabilityingeodesyandgeophysics
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