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Using a variance-based sensitivity analysis for analyzing the relation between measurements and unknown parameters of a physical model

  • An implementation of uncertainty analysis (UA) and quantitative global sensitivity analysis (SA) is applied to the non-linear inversion of gravity changes and three dimensional displacement data which were measured in and active volcanic area. A didactic example is included to il lustrate the computational procedure. The main emphasis is placed on the problem of extended Fourier amplitude sensi tivity test (E-FAST). This method produces the total sensi tivity indices (TSIs), so that all interactions between the un known input parameters are taken into account. The possible correlations between the output an the input parameters can be evaluated by uncertainty analysis. Uncertainty analysis re sults indicate the general fi between the physical model and the measurements. Results of the sensitivity analysis show quite different sensitivities for the measured changes as they relate to the unknown parameters of a physical model for an elastic-gravitational source. Assuming a fi ed number of ex ecutions, thirty different seeds are observed to determine the stability of this method.

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Metadaten
Author:J. Zhao, Carola Tiede
URN:urn:nbn:de:bvb:m347-opus-2320
DOI:https://doi.org/10.5194/npg-18-269-2011
Parent Title (English):Nonlinear Processes in Geophysics
Publisher:Copernicus Gesellschaft mbH
Place of publication:Göttingen
Document Type:Article
Language:English
Date of Publication (online):2022/01/10
Date of first Publication:2011/05/03
Publishing Institution:Hochschule für angewandte Wissenschaften München
Release Date:2022/01/10
GND Keyword:GeophysikGND; SensitivitätsanalyseGND
Volume:18
Issue:3
Page Number:8
First Page:269
Last Page:276
Note:
Sonderdruck aus: Nonlinear Processes in Geophysics, 18, 269–276, 2011
Departments and Institutes:Fakultäten der Hochschule München / FK 08 Fakultät für Geoinformation
Dewey Decimal Classification:9 Geschichte und Geografie / 91 Geografie, Reisen / 910 Geografie, Reisen
Illustrations:grafische Darstellung/en
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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