Receiver structure from teleseisms: Autocorrelation and cross correlation

We present a way of characterizing the structure beneath a seismic station, by exploiting stacked correlograms of three‐component records from teleseismic events. This seismic daylight imaging approach exploits the extraction of reflection and conversion information from teleseismic coda via tensor...

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Bibliographic Details
Published in:Geophysical research letters 2016-06, Vol.43 (12), p.6234-6242
Main Authors: Sun, Weijia, Kennett, B. L. N.
Format: Article
Language:English
Subjects:
Autocorrelation
Banded structure
Conversion
correlation
Cross correlation
Data processing
Daylight
Geophysics
Imaging techniques
Plate tectonics
Receivers
Reflectance
Reflection
Seismic activity
Seismic phenomena
Seismology
Stations
teleseismic event
Tensors
transmission
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Summary:We present a way of characterizing the structure beneath a seismic station, by exploiting stacked correlograms of three‐component records from teleseismic events. This seismic daylight imaging approach exploits the extraction of reflection and conversion information from teleseismic coda via tensor autocorrelation. The approach is illustrated for a number of Australian stations in a variety of tectonic environments using hundreds of teleseismic events, to extract P and S reflectivity and converted Ps and Sp information. The results show a very good agreement with prior knowledge across Australia. Compared with the classical receiver function, the broader‐frequency band of 0.5–4.0 Hz provides additional information on finer‐scale structure. Key Points P and S reflection and conversion responses from transmitted teleseisms Three components of teleseismic events are used rather than ambient noise Broader‐frequency band of response helps to reveal finer‐scale structure
ISSN:0094-8276
1944-8007
DOI:10.1002/2016GL069564