@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS028 prodottidellaricerca:prodotto prodotto:ID290361 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA4397 pubblicazioni:autoreCNRDi prodotto:ID290361 . @prefix rdf: . prodotto:ID290361 rdf:type prodotto:TIPO1101 . @prefix retescientifica: . prodotto:ID290361 rdf:type retescientifica:ProdottoDellaRicerca . @prefix rdfs: . prodotto:ID290361 rdfs:label "Sequential integrated inversion of refraction and wide-angle reflection traveltimes and gravity data for two-dimensional velocity structures (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID290361 pubblicazioni:anno "2000-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1046/j.1365-246x.2000.00104.x"^^xsd:string . @prefix skos: . prodotto:ID290361 skos:altLabel "
Tondi, R; de Franco, R; Barzaghi, R (2000)
Sequential integrated inversion of refraction and wide-angle reflection traveltimes and gravity data for two-dimensional velocity structures
in Geophysical journal international (Print)
"^^rdf:HTML ; pubblicazioni:autori "Tondi, R; de Franco, R; Barzaghi, R"^^xsd:string ; pubblicazioni:paginaInizio "679"^^xsd:string ; pubblicazioni:paginaFine "698"^^xsd:string ; pubblicazioni:numeroVolume "141"^^xsd:string . @prefix ns10: . prodotto:ID290361 pubblicazioni:rivista ns10:ID507272 ; pubblicazioni:pagineTotali "20"^^xsd:string ; pubblicazioni:numeroFascicolo "3"^^xsd:string ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "Consiglio Nazionale delle Ricerche (CNR); Polytechnic University of Milan"^^xsd:string ; pubblicazioni:titolo "Sequential integrated inversion of refraction and wide-angle reflection traveltimes and gravity data for two-dimensional velocity structures"^^xsd:string ; prodottidellaricerca:abstract "A new algorithm is presented for the integrated 2-D inversion of seismic traveltime and gravity data. The algorithm adopts the 'maximum likelihood' regularization scheme. We construct a 'probability density function' which includes three kinds of information: information derived from gravity measurements; information derived from the seismic traveltime inversion procedure applied to the model; and information on the physical correlation among the density and the velocity parameters. We assume a linear relation between density and velocity, which can be node-dependent; that is, we can choose different relationships for different parts of the velocity-density grid. In addition, our procedure allows us to consider a covariance matrix related to the error propagation in linking density to velocity. We use seismic data to estimate starting velocity values and the position of boundary nodes. Subsequently, the sequential integrated inversion (SII) optimizes the layer velocities and densities for our models. The procedure is applicable, as an additional step, to any type of seismic tomographic inversion."@en , "We illustrate the method by comparing the velocity models recovered from a standard seismic traveltime inversion with those retrieved using our algorithm. The inversion of synthetic data calculated for a 2-D isotropic, laterally inhomogeneous model shows the stability and accuracy of this procedure, demonstrates the improvements to the recovery of true velocity anomalies, and proves that this technique can efficiently overcome some of the limitations of both gravity and seismic traveltime inversions, when they are used independently." ; prodottidellaricerca:prodottoDi istituto:CDS028 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA4397 . @prefix parolechiave: . prodotto:ID290361 parolechiave:insiemeDiParoleChiave . ns10:ID507272 pubblicazioni:rivistaDi prodotto:ID290361 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID290361 .