Format:
v, 139 Seiten
,
Illustrationen, Diagramme
Content:
The classical method of seismic event localization is based on the picking of body wave arrivals, ray tracing and inversion of travel time data. Travel time picks with small uncertainties are required to produce reliable and accurate results with this kind of source localization. Hence recordings, with a low Signal-to-Noise Ratio (SNR) cannot be used in a travel time based inversion. Low SNR can be related with weak signals from distant and/or low magnitude sources as well as with a high level of ambient noise. Diffraction stacking is considered as an alternative seismic event localization method that enables also the processing of low SNR recordings by mean of stacking the amplitudes of seismograms along a travel time function. The location of seismic event and its origin time are determined based on the highest stacked amplitudes (coherency) of the image function. The method promotes an automatic processing since it does not need travel time picks as input data. However, applying diffraction stacking may require longer…
Note:
Dissertation Universität Potsdam, Mathematisch-Naturwissenschaftliche Fakultät 2017
Additional Edition:
Erscheint auch als Online-Ausgabe Hendriyana, Andri Detection and Kirchhoff-type migration of seismic events by use of a new characteristic function Potsdam, 2017
Language:
English
Keywords:
Erdbeben
;
Laufzeitmessung
;
Beugung
;
Rauschen
;
Seismogramm
;
Erdbebenherd
;
Ortsbestimmung
;
Green-Funktion
;
Kovarianzmatrix
;
Hochschulschrift
Author information:
Bauer, Klaus 1967-
