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作者:K.G. Ghanem , S.M. Sharafeldin , A.A. Saleh ...
来源:[J].Journal of Petroleum Science and Engineering(IF 0.997), 2017, Vol.154, pp.126-138
摘要:Abstract(#br)In an attempt to reconstruct the near-surface velocity for the shallow subsurface in the area under study using two different approaches: 3D Traveltime Tomography and Dispersion Curves Inversion (DCI), a total of 26286 shot records were used from Matruh 3D onshore...
作者:Lucas C. Laurindo , Arthur J. Mariano , Rick Lumpkin
来源:[J].Deep-Sea Research Part I(IF 2.816), 2017, Vol.124, pp.73-92
摘要:Abstract(#br)This work updates the methods of Lumpkin and Johnson (2013) to obtain an improved near-surface velocity climatology for the global ocean using observations from undrogued and 15-m drogued Global Drifter Program (GDP) drifters. The proposed procedure includes the corr...
作者:Laurence Perrier , Jean-Philippe Métaxian , Jean Battaglia ...
来源:[J].Journal of Volcanology and Geothermal Research(IF 2.193), 2012, Vol.227-228, pp.50-60
摘要:Abstract(#br)Small-aperture array measurements of seismic noise at seven sites around Yasur volcano (Vanuatu) are performed to estimate the V P and V S velocities of the shallow structure. The spatial autocorrelation (SPAC) and the frequency–wavenumber (f–k) methods are u...
作者:Taikun Shi , Jianzhong Zhang , Zhonglai Huang ...
来源:[J].Journal of Earth Science(IF 0.395), 2015, Vol.26 (4), pp.502-507
摘要:Abstract(#br)In order to improve the efficiency of 3D near-surface velocity model building, we develop a layer-stripping method using seismic first-arrival times. The velocity model within a Common Mid-Point (CMP) gather is assumed to be stratified into thin layers, and the velocity...
作者:Juncheng Zuo , Ling Du , Alvaro Peliz ...
来源:[J].Journal of Ocean University of China, 2007, Vol.6 (3), pp.213-225
摘要:Abstract(#br)Observations made on the northern Portugal mid-shelf between May 13 and June 15, 2002 were used to characterise the near-surface velocity during one upwelling season. It was found that in the surface mixed layer, the ‘tidal current’ was diurnal, but the tidal el...
作者:Bernard K. Law , Daniel Trad
来源:[J].2018, Vol.83 (6), pp.U63-U77
摘要:ABSTRACTAn accurate near-surface velocity model is critical for weathering statics correction and initial model building for depth migration and full-waveform inversion. However, near-surface models from refraction inversion often suffer from errors in refraction data, insufficie...
作者:Peter Whiting , Natasha Hendrick , Wal Muir ...
来源:[J].1997, Vol.28 (1/2), pp.161-165
摘要:ABSTRACT The ability of a number of processing techniques to accommodate a complex near-surface velocity field resulting from a highly irregular water bottom has been evaluated on seismic data from the Timor Sea. Conventional processing is not appropriate where such large lateral...
作者:Lu Liu , Yan Wu , Bowen Guo ...
来源:[J].2018, Vol.83 (4), pp.R335-R344
摘要:ABSTRACTAccurate estimation of near-surface velocity is a key step for imaging deeper targets. We have developed a new workflow to invert complex early arrivals in land seismic data for near-surface velocities. This workflow is composed of two methods: source-domain full travelti...
作者:Raul Cova , David Henley , Kristopher A. Innanen
来源:[J].2018, Vol.83 (3), pp.U23-U34
摘要:ABSTRACTA near-surface velocity model is one of the typical products generated when computing static corrections, particularly in the processing of PP data. Critically refracted waves are the input usually needed for this process. In addition, for the converted PS mode, S-wave near-surface...

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