Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9196
DC Field | Value | Language |
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dc.contributor.authorall | Spada, G.; Dip.to di Scienze di Base e Fondamenti, Università di Urbino, Urbino, Italy | en |
dc.contributor.authorall | Galassi, G.; Dipartimento di Scienze di Base e Fondamenti, Urbino University “Carlo Bo” | en |
dc.contributor.authorall | Olivieri, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
dc.date.accessioned | 2014-12-29T15:10:33Z | en |
dc.date.available | 2014-12-29T15:10:33Z | en |
dc.date.issued | 2015 | en |
dc.identifier.uri | http://hdl.handle.net/2122/9196 | en |
dc.description.abstract | We use the Empirical Mode Decomposition (EMD) method to study the decadal variations in polar motion and its long-term trend since year 1900. The existence of the so-called “Markowitz wobble”, a multidecadal fluctuation of the mean pole of rotation whose nature has long been debated since its discovery in 1960, is confirmed. In the EMD approach, the Markowitz wobble naturally arises as an empirical oscillatory term in polar motion, showing significant amplitude variations and a period of approximately 3 decades. The path of the time-averaged, non-cyclic component of polar motion matches the results of previous investigations based on classical spectral methods. However, our analysis also reveals previously unnoticed steep variations (change points) in the rate and the direction of secular polar motion. | en |
dc.language.iso | English | en |
dc.publisher.name | Plenum Press | en |
dc.relation.ispartof | Studia Geophysica et Geodaetica | en |
dc.relation.ispartofseries | /59(2015) | en |
dc.subject | secular polar motion | en |
dc.subject | markowitz wobble | en |
dc.title | Empirical mode decomposition of long-term polar motion observation | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 200–211 | en |
dc.identifier.URL | http://www.bo.ingv.it/~olivieri/publications/Empirical_Polar_Motion_Spada_Galassi_Olivieri.pdf | en |
dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.02. Earth rotation | en |
dc.identifier.doi | 10.1007/s11200-014-1151-4 | en |
dc.description.obiettivoSpecifico | 1T. Geodinamica e interno della Terra | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.relation.issn | 0039-3169 | en |
dc.relation.eissn | 1573-1626 | en |
dc.contributor.author | Spada, G. | en |
dc.contributor.author | Galassi, G. | en |
dc.contributor.author | Olivieri, M. | en |
dc.contributor.department | Dip.to di Scienze di Base e Fondamenti, Università di Urbino, Urbino, Italy | en |
dc.contributor.department | Dipartimento di Scienze di Base e Fondamenti, Urbino University “Carlo Bo” | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | reserved | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Insitute of Physics, University of Urbino, Italy | - |
crisitem.author.dept | Dipartimento di Scienze di Base e Fondamenti, Urbino University “Carlo Bo” | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | - |
crisitem.author.orcid | 0000-0002-7333-8809 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
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Empirical_Polar_Motion_Spada_Galassi_Olivieri.pdf | 1.84 MB | Adobe PDF |
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