reflection seismic data consist of primary reflections, coherent and incoherent noises. one of the objectives of seismic data processing is to enhance the quality of the real signals by attenuating different kinds of noises. multiples constitute one of the most troublesome forms of coherent noises in exploration seismology. multiple reflections often destructively interfere with the desired pri...

C”n”enti”nal surfxe rcnecrion methods CO‘ derccting and supprc*,ing short-period interbed multiples in Lkvunian reef explorati”” often race difficulties. Predictive dec”n”“lution and C”P stacking of surface reflection data S”metimei d” not suppress the multiples that “brcurc primary reef re”ccti”nl. A Yenicd seibnlic pmmng (VW) method which can help t” differcn,ia,r primarier and multiples is c...

To describe the social and historical impact of ART on multiple gestations and to discuss psychological issues unique to these families. At the time of the birth of the Dionne quintuplets in 1934, only 33 cases of quintuplets had been reported in the literature and none of the quintuplets survived more than 50 days. Spontaneous higher order multiple gestation is still rare but the number of iat...

Seismic interferometry has become a technology of growing interest for imaging borehole seismic data. We demonstrate that interferometry of internal multiples can be used to image targets above a borehole receiver array. By “internal multiples” we refer to all types of waves that scatter multiple times inside the model. These include, for instance, interbed, intra-salt and water-bottom multiple...

Pan African Medical Journal. 2016; 25:15 doi:10.11604/pamj.2016.25.15.10626 This article is available online at: http://www.panafrican-med-journal.com/content/article/25/15/full/ © Hakima Elmahi et al. The Pan African Medical Journal ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0)...

Wave-equation migration with the velocity of the primaries maps non-diffracted waterbottom multiples to an hyperbola in subsurface-offset-domain-common-image-gathers. Furthermore, for positive surface offsets, the multiples are mapped to non-positive subsurface offsets if sediment velocity is faster than water. The larger the offset in the data space, the larger the subsurface offset and the sh...