Advanced Search

Show simple item record

dc.contributor.authorBraun, Tobias
dc.contributor.authorFernandez, Cinthya N.
dc.contributor.authorEroglu, Deniz
dc.contributor.authorHartland, Adam
dc.contributor.authorBreitenbach, Sebastian F. M.
dc.contributor.authorMarwan, Norbert
dc.date.accessioned2023-10-19T15:11:33Z
dc.date.available2023-10-19T15:11:33Z
dc.date.issued2022
dc.identifier.issn2470-0045
dc.identifier.issn2470-0053
dc.identifier.urihttps://doi.org/10.1103/PhysRevE.105.024206
dc.identifier.urihttps://hdl.handle.net/20.500.12469/5074
dc.description.abstractThe analysis of irregularly sampled time series remains a challenging task requiring methods that account for continuous and abrupt changes of sampling resolution without introducing additional biases. The edit distance is an effective metric to quantitatively compare time series segments of unequal length by computing the cost of transforming one segment into the other. We show that transformation costs generally exhibit a nontrivial relationship with local sampling rate. If the sampling resolution undergoes strong variations, this effect impedes unbiased comparison between different time episodes. We study the impact of this effect on recurrence quantification analysis, a framework that is well suited for identifying regime shifts in nonlinear time series. A constrained randomization approach is put forward to correct for the biased recurrence quantification measures. This strategy involves the generation of a type of time series and time axis surrogates which we call sampling-rate-constrained (SRC) surrogates. We demonstrate the effectiveness of the proposed approach with a synthetic example and an irregularly sampled speleothem proxy record from Niue island in the central tropical Pacific. Application of the proposed correction scheme identifies a spurious transition that is solely imposed by an abrupt shift in sampling rate and uncovers periods of reduced seasonal rainfall predictability associated with enhanced El Nino-Southern Oscillation and tropical cyclone activity.en_US
dc.description.sponsorshipDeutsche Forschungsgemeinschaft [MA4759/11-1]; Nonlinear empirical mode analysis of complex systems; European Union [691037]; TUB.ITAK [118C236]; BAGEP Award of the Science Academy; German Academic Exchange Service (DAAD); Royal Society of New Zealand [RIS-UOW1501]; Rutherford Discovery Fellowship program [RDF-UOW1601]; Marie Curie Actions (MSCA) [691037] Funding Source: Marie Curie Actions (MSCA)en_US
dc.description.sponsorshipThis research was supported by the Deutsche Forschungsgemeinschaft in the context of the DFG Project No. MA4759/11-1 Nonlinear empirical mode analysis of complex systems: Development of general approach and application in climate. It also received financial support from the European Union's Horizon 2020 Research and Innovation program (Marie Sklodowska-Curie Grant Agreement No. 691037). D.E. acknowledges funding by TUB.ITAK (Grant No. 118C236) and the BAGEP Award of the Science Academy. C.N.F. acknowledges financial support from the German Academic Exchange Service (DAAD). A.H. acknowledges support from the Royal Society of New Zealand (Grant No. RIS-UOW1501), and the Rutherford Discovery Fellowship program (Grant No. RDF-UOW1601). The authors declare that they have no conflict of interest.en_US
dc.language.isoengen_US
dc.publisherAmer Physical Socen_US
dc.relation.ispartofPhysical Review Een_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectRecurrence PlotsEn_Us
dc.subjectSpectral-AnalysisEn_Us
dc.subjectAlgorithmsEn_Us
dc.subjectStatisticsEn_Us
dc.subjectEstimatorsEn_Us
dc.subjectClimateEn_Us
dc.titleSampling rate-corrected analysis of irregularly sampled time seriesen_US
dc.typearticleen_US
dc.authoridEroglu, Deniz/0000-0001-6725-6949
dc.authoridMarwan, Norbert/0000-0003-1437-7039
dc.authoridBraun, Tobias/0000-0002-3095-8960
dc.authoridBreitenbach, Sebastian/0000-0001-9615-2065
dc.identifier.issue2en_US
dc.identifier.volume105en_US
dc.departmentN/Aen_US
dc.identifier.wosWOS:000766300100009en_US
dc.identifier.doi10.1103/PhysRevE.105.024206en_US
dc.identifier.scopus2-s2.0-85125576290en_US
dc.institutionauthorN/A
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.authorwosidEroglu, Deniz/GVS-9233-2022
dc.authorwosidMarwan, Norbert/D-9576-2011
dc.authorwosidFernandez, Cinthya/IXN-1160-2023
dc.identifier.pmid35291153en_US
dc.khas20231019-WoSen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record