Premium
Imaging basin structure with teleseismic virtual source reflection profiles
Author(s) -
Yang Zhaohui,
Sheehan Anne F.,
Yeck William L.,
Miller Kate C.,
Erslev Eric A.,
Worthington Lindsay L.,
Harder Steven H.
Publication year - 2012
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2011gl050035
Subject(s) - geophone , geology , seismogram , seismology , reflection (computer programming) , structural basin , wavelet , channel (broadcasting) , geomorphology , engineering , artificial intelligence , computer science , electrical engineering , programming language
We demonstrate a case of using teleseisms recorded on single‐channel high‐frequency geophones to image upper crustal structure around the Bighorn Mountains of north‐central Wyoming, USA. Our approach produces images that are analogous to those from a low frequency version of conventional active source seismic reflection profiles except that wave fields from distant earthquakes are used as sources. After the source wavelet is removed from the seismograms, a distinct phase, PpPdp , is evident in the resultant record. After depth conversion, we show that this phase correlates well with the top of the Madison Formation under the Powder River and Bighorn Basins that flank the Bighorn Mountains. In addition, we combine the phases PpPdp from single‐channel geophone recordings and Ps from three‐component recordings to constrain the average Vp / Vs ratio for the sedimentary strata.