 |
| Titel |
Using a variance-based sensitivity analysis for analyzing the relation between measurements and unknown parameters of a physical model |
| VerfasserIn |
J. Zhao, C. Tiede |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1023-5809
|
| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 18, no. 3 ; Nr. 18, no. 3 (2011-05-03), S.269-276 |
| Datensatznummer |
250013916
|
| Publikation (Nr.) |
 copernicus.org/npg-18-269-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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 illustrate the computational procedure. The
main emphasis is placed on the problem of extended Fourier amplitude
sensitivity test (E-FAST). This method produces the total sensitivity indices
(TSIs), so that all interactions between the unknown input parameters are
taken into account. The possible correlations between the output an the input
parameters can be evaluated by uncertainty analysis. Uncertainty analysis
results indicate the general fit 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 fixed number of executions, thirty different seeds are observed to
determine the stability of this method. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|