Distribution of noise sources for seismic interferometry
نویسندگان
چکیده
منابع مشابه
Distribution of noise sources for seismic interferometry
S U M M A R Y We demonstrate that the distribution of seismic noise sources affects the accuracy of Green’s function estimates and therefore isotropic and anisotropic tomographic inversions for both velocity and attenuation. We compare three methods for estimating seismic noise source distributions and quantify the potential error in phase velocity, azimuthal anisotropy and attenuation estimate...
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SUMMARY By cross-correlating recordings of ambient seismic noise, one can retrieve the subsurface reflection response. The quality of the retrieved reflections would depend on the qualities of the ambient noise. In a previous study, we cross-correlated ambient-noise data recorded in a desert area in North Africa and showed that we retrieved reflections. This was done assuming that body-wave noi...
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[1] Noise with periods 3 to 10 s, ubiquitous in seismic records, is expected to be mostly generated by pairs of ocean wave trains of opposing propagation directions with half the seismic frequency. Here we present the first comprehensive numerical model of microseismic generation by random ocean waves, including ocean wave reflections. Synthetic and observed seismic spectra are well correlated ...
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Cornelis Weemstra,1,3 Deyan Draganov,1 Elmer N. Ruigrok,2,3 Jürg Hunziker,4 Martin Gomez5 and Kees Wapenaar1 1Department of Geoscience and Engineering, Delft University of Technology, Delft, The Netherlands. E-mail: [email protected] 2Royal Netherlands Meteorological Institute, De Bilt, The Netherlands 3Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands 4Department of ...
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Interferometry by MDD for CSEM retrieves the subsurface reflection response which is completely free of any effects related to the medium above the receivers. Consequently, the problematic airwave as well as any other interaction of the signal with the air-water interface is removed. We apply interferometry by MDD in combination with the synthetic aperture source concept to overcome sampling pr...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2010
ISSN: 0956-540X
DOI: 10.1111/j.1365-246x.2010.04802.x