caa a22 4500 445299444 CHVBK 20180317142552.0 cr unu---uuuuu 170323e20100101xx s 000 0 eng 10.1007/s11430-009-0167-z doi (NATIONALLICENCE)springer-10.1007/s11430-009-0167-z Fu LiYun Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Quantitative assessment of the complexity of geological structures in terms of seismic propagators [Elektronische Daten] [LiYun Fu] How a wave interacts with heterogeneous media has been pursued by many geophysicists. The complexity of subsurface heterogeneities is seismologically a relative concept to wavelengths of seismic waves. A growing perception is that velocity variations, propagation angles, and computational accuracies are closely related at a variety of scales. A tentative strategy to quantitatively evaluate the complexity of subsurface heterogeneous media is presented in this article to see what scales of geological heterogeneities to be captured by waves. We express complex subsurface structures as the slowness- and angular-heterogeneity spectra to quantify velocity contrasts and dipping-angle distributions of complex geological structures. On the other hand, the scaling characteristics of a propagator are measured through dispersion analysis by its angular spectra plotted against refractive indexes and propagation angles, respectively. A parameter termed as imaging efficiency is introduced by associating the geological heterogeneity spectra with the propagator's angular spectra to understand the coherent interference between the medium's heterogeneity and the propagator's scaling characteristics. Furthermore, a complexity coefficient can be defined to evaluate geological complexities in terms of propagators. The application of this strategy is demonstrated to the SEG/EAEG salt model. Science in China Press and Springer Berlin Heidelberg, 2009 geological heterogeneity spectra nationallicence seismic imaging nationallicence propagator's angular spectra nationallicence imaging efficiency nationallicence complexity coefficient nationallicence Science in China Series D: Earth Sciences SP Science in China Press 53/1(2010-01-01), 54-63 1674-7313 53:1<54 2010 53 11430 https://doi.org/10.1007/s11430-009-0167-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-009-0167-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Fu LiYun Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- Science in China Series D: Earth Sciences SP Science in China Press 53/1(2010-01-01), 54-63 1674-7313 53:1<54 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer