TY - JOUR A1 - Zhao, J. A1 - Tiede, Carola T1 - Using a variance-based sensitivity analysis for analyzing the relation between measurements and unknown parameters of a physical model T2 - Nonlinear Processes in Geophysics N2 - 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. KW - Geophysik KW - Sensitivitätsanalyse Y1 - 2022 UR - https://opus4.kobv.de/opus4-hm/frontdoor/index/index/docId/232 UR - https://nbn-resolving.org/urn:nbn:de:bvb:m347-opus-2320 N1 - Sonderdruck aus: Nonlinear Processes in Geophysics, 18, 269–276, 2011 VL - 18 IS - 3 SP - 269 EP - 276 PB - Copernicus Gesellschaft mbH CY - Göttingen ER -