FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1514403721> ?p ?o ?g. }

• W1514403721 abstract "We present the geomagnetic field model COV-OBS.x1, covering 1840 to 2020, from which have been derived candidate models for the IGRF-12. Towards the most recent epochs, it is primarily constrained by first differences of observatory annual means and measurements from the Oersted, Champ, and Swarm satellite missions. Stochastic information derived from the temporal spectra of geomagnetic series is used to construct the a priori model covariance matrix that complements the constraint brought by the data. This approach makes it possible the use of a posteriori model errors, for instance, to measure the ‘observations’ uncertainties in data assimilation schemes for the study of the outer core dynamics. We also present and illustrate a stochastic algorithm designed to forecast the geomagnetic field. The radial field at the outer core surface is advected by core motions governed by an auto-regressive process of order 1. This particular choice is motivated by the slope observed for the power spectral density of geomagnetic series. Accounting for time-correlated model errors (subgrid processes associated with the unresolved magnetic field) is made possible thanks to the use of an augmented state ensemble Kalman filter algorithm. We show that the envelope of forecasts includes the observed secular variation of the geomagnetic field over 5-year intervals, even in the case of rapid changes. In a purpose of testing hypotheses about the core dynamics, this prototype method could be implemented to build the ‘state zero’ of the ability to forecast the geomagnetic field, by measuring what can be predicted when no deterministic physics is incorporated into the dynamical model." @default.
• W1514403721 created "2016-06-24" @default.
• W1514403721 creator A5018375154 @default.
• W1514403721 creator A5024820393 @default.
• W1514403721 creator A5034040026 @default.
• W1514403721 date "2015-05-14" @default.
• W1514403721 modified "2023-10-18" @default.
• W1514403721 title "Stochastic forecasting of the geomagnetic field from the COV-OBS.x1 geomagnetic field model, and candidate models for IGRF-12" @default.
• W1514403721 cites W1487194815 @default.
• W1514403721 cites W1864128436 @default.
• W1514403721 cites W1878598566 @default.
• W1514403721 cites W1921635320 @default.
• W1514403721 cites W1975105104 @default.
• W1514403721 cites W1985036388 @default.
• W1514403721 cites W1986805835 @default.
• W1514403721 cites W1991350348 @default.
• W1514403721 cites W1998251877 @default.
• W1514403721 cites W1999391963 @default.
• W1514403721 cites W2006244167 @default.
• W1514403721 cites W2006248364 @default.
• W1514403721 cites W2009104157 @default.
• W1514403721 cites W2013050833 @default.
• W1514403721 cites W2041046956 @default.
• W1514403721 cites W2042342067 @default.
• W1514403721 cites W2047241659 @default.
• W1514403721 cites W2054378503 @default.
• W1514403721 cites W2061190113 @default.
• W1514403721 cites W2063841808 @default.
• W1514403721 cites W2065314386 @default.
• W1514403721 cites W2066481069 @default.
• W1514403721 cites W2076702773 @default.
• W1514403721 cites W2094646879 @default.
• W1514403721 cites W2095348611 @default.
• W1514403721 cites W2096398879 @default.
• W1514403721 cites W2106186106 @default.
• W1514403721 cites W2108963537 @default.
• W1514403721 cites W2112145379 @default.
• W1514403721 cites W2126258080 @default.
• W1514403721 cites W2128931495 @default.
• W1514403721 cites W2132487393 @default.
• W1514403721 cites W2139019018 @default.
• W1514403721 cites W2143215875 @default.
• W1514403721 cites W2154742156 @default.
• W1514403721 cites W2160747471 @default.
• W1514403721 cites W2166814105 @default.
• W1514403721 cites W2168784807 @default.
• W1514403721 cites W2332542254 @default.
• W1514403721 cites W3124244254 @default.
• W1514403721 cites W4231021340 @default.
• W1514403721 cites W4255444038 @default.
• W1514403721 doi "https://doi.org/10.1186/s40623-015-0225-z" @default.
• W1514403721 hasPublicationYear "2015" @default.
• W1514403721 type Work @default.
• W1514403721 sameAs 1514403721 @default.
• W1514403721 citedByCount "57" @default.
• W1514403721 countsByYear W15144037212015 @default.
• W1514403721 countsByYear W15144037212016 @default.
• W1514403721 countsByYear W15144037212017 @default.
• W1514403721 countsByYear W15144037212018 @default.
• W1514403721 countsByYear W15144037212019 @default.
• W1514403721 countsByYear W15144037212020 @default.
• W1514403721 countsByYear W15144037212021 @default.
• W1514403721 countsByYear W15144037212022 @default.
• W1514403721 countsByYear W15144037212023 @default.
• W1514403721 crossrefType "journal-article" @default.
• W1514403721 hasAuthorship W1514403721A5018375154 @default.
• W1514403721 hasAuthorship W1514403721A5024820393 @default.
• W1514403721 hasAuthorship W1514403721A5034040026 @default.
• W1514403721 hasBestOaLocation W15144037211 @default.
• W1514403721 hasConcept C105795698 @default.
• W1514403721 hasConcept C112197492 @default.
• W1514403721 hasConcept C11413529 @default.
• W1514403721 hasConcept C115260700 @default.
• W1514403721 hasConcept C121332964 @default.
• W1514403721 hasConcept C121864883 @default.
• W1514403721 hasConcept C127313418 @default.
• W1514403721 hasConcept C13280743 @default.
• W1514403721 hasConcept C153294291 @default.
• W1514403721 hasConcept C157286648 @default.
• W1514403721 hasConcept C199635899 @default.
• W1514403721 hasConcept C202444582 @default.
• W1514403721 hasConcept C24552861 @default.
• W1514403721 hasConcept C33923547 @default.
• W1514403721 hasConcept C62520636 @default.
• W1514403721 hasConcept C8058405 @default.
• W1514403721 hasConcept C9652623 @default.
• W1514403721 hasConceptScore W1514403721C105795698 @default.
• W1514403721 hasConceptScore W1514403721C112197492 @default.
• W1514403721 hasConceptScore W1514403721C11413529 @default.
• W1514403721 hasConceptScore W1514403721C115260700 @default.
• W1514403721 hasConceptScore W1514403721C121332964 @default.
• W1514403721 hasConceptScore W1514403721C121864883 @default.
• W1514403721 hasConceptScore W1514403721C127313418 @default.
• W1514403721 hasConceptScore W1514403721C13280743 @default.
• W1514403721 hasConceptScore W1514403721C153294291 @default.
• W1514403721 hasConceptScore W1514403721C157286648 @default.
• W1514403721 hasConceptScore W1514403721C199635899 @default.
• W1514403721 hasConceptScore W1514403721C202444582 @default.
• W1514403721 hasConceptScore W1514403721C24552861 @default.
• W1514403721 hasConceptScore W1514403721C33923547 @default.

• next