ISSN:
1420-9136
Keywords:
Moment tensor
;
inversion
;
surface waves
;
conditioning
;
single station
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Some theoretical and practical limits to linear moment tensor inversion of surface waves are analyzed in detail, in particular when one or few stations are used for rapid determination of source parameters. The theory is briefly outlined and steps of preprocessing, especially corrections for source history and propagation, are discussed in order to guarantee the validity of the moment tensor inversion. The inverse problem is first studied from a theoretical point of view. Then the feasibility of the moment tensor inversion is tested from synthetic computations and the formalism is improved in order to obtain a better system conditioning. Finally, some cases of practical nonuniqueness of the solution are shown and possible restrictions to the applicability of the method are discussed. All steps are illustrated with the example of theM s =6.9 Erzincan (Turkey) earthquake of March, 13, 1992.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00880269
Permalink
