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}


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	month = {7},
	pages = {696-712},
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	url2 = {http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2478.2011.01041.x/full},
	author = {Felix J. Herrmann and Xiang Li}
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@conference {vanleeuwen2012EAGEext,
author = {Tristan {van~Leeuwen} and Herrmann, Felix J.},
title = {Wave-equation extended images: computation and velocity continuation},
booktitle = {EAGE technical program},
year = {2012},
publisher = {EAGE},
organization = {EAGE},
url = {https://www.slim.eos.ubc.ca/Publications/Public/Conferences/EAGE/2012/vanleeuwen2012EAGEext/vanleeuwen2012EAGEext.pdf}
}

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author = {Sava, P. and Vlad, I.},
title = {Wide-azimuth angle gathers for wave-equation migration},
journal = {GEOPHYSICS},
volume = {76},
number = {3},
pages = {S131-S141},
year = {2011},
doi = {10.1190/1.3560519},
URL = {http://library.seg.org/doi/abs/10.1190/1.3560519},
eprint = {http://library.seg.org/doi/pdf/10.1190/1.3560519}
}

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  publisher={IOP Publishing}
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publisher = {Blackwell Publishing Ltd},
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url = {http://dx.doi.org/10.1111/j.1365-2478.2010.00888.x},
doi = {10.1111/j.1365-2478.2010.00888.x},
pages = {35--55},
keywords = {Imaging, Interferometry, Tomography, Velocity analysis, Wave-equation},
year = {2011},
}
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author = {Biondi, Biondo and Symes, William W.},
file = {:Volumes/Users/tristan/Documents/Mendeley Desktop/Biondi, Symes - 2004 - Angle-domain common-image gathers for migration velocity analysis by wavefield-continuation imaging.pdf:pdf},
journal = {Geophysics},
number = {5},
pages = {1283},
title = {{Angle-domain common-image gathers for migration velocity analysis by wavefield-continuation imaging}},
url = {http://link.aip.org/link/GPYSA7/v69/i5/p1283/s1\&Agg=doi},
volume = {69},
year = {2004}
}
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author = {Biondi, Biondo},
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number = {4},
pages = {1340--1347},
title = {Equivalence of source-receiver migration and shot-profile migration},
volume = {68},
year = {2003}
}
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author = {Stolk, C.C. and de Hoop, M.V.},
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}

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title = {{Velocity continuation in the downward continuation approach to seismic imaging}},
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year = {2009}
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title = {{Evolution-equation approach to seismic image, and data, continuation}},
url = {http://dx.doi.org/10.1016/j.wavemoti.2008.06.001},
volume = {45},
year = {2008}
}
@article{stolk06,
author = {Stolk, C.C. and de Hoop, M.V.},
file = {:Volumes/Users/tristan/Documents/Mendeley Desktop/Stolk, de Hoop - 2006 - Seismic inverse scattering in the downward continuation approach.pdf:pdf},
journal = {Wave Motion},
pages = {579--598},
title = {{Seismic inverse scattering in the downward continuation approach}},
volume = {43},
year = {2006}
}

@article{tristan,
Author = {Tristan {van~Leeuwen} and Rajiv Kumar and Felix J. Herrmann},
Doi = {10.1111/1365-2478.12418},
Journal = {Geophysical Prospecting},
Keywords = {AVA, migration velocity analysis, Stochastic optimization},
Month = {08},
Title = {Enabling affordable omnidirectional subsurface extended image volumes via probing},
Url = {https://www.slim.eos.ubc.ca/Publications/Public/Journals/GeophysicalProspecting/2016/vanleeuwen2015GPWEMVA/vanleeuwen2015GPWEMVA.pdf},
Year = {2016},
Bdsk-Url-1 = {https://www.slim.eos.ubc.ca/Publications/Public/Journals/GeophysicalProspecting/2016/vanleeuwen2015GPWEMVA/vanleeuwen2015GPWEMVA.pdf},
Bdsk-Url-2 = {http://dx.doi.org/10.1111/1365-2478.12418}}


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journal = {Geophysics},
number = {6},
publisher = {SEG},
title = {{Nonlinear extended images via image-domain interferometry}},
url = {http://link.aip.org/link/?GPYSA7/75/SA105/1},
volume = {75},
year = {2010}
}
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author = {Sava, Paul and Vasconcelos, Ivan},
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number = {1},
pages = {35--55},
title = {{Extended imaging conditions for wave-equation migration}},
url = {http://doi.wiley.com/10.1111/j.1365-2478.2010.00888.x},
volume = {59},
year = {2011}
}
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year = {2003}
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author = {Stolk, C C and de Hoop, M V},
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journal = {Wave Motion},
pages = {579--598},
title = {{Seismic inverse scattering in the downward continuation approach}},
volume = {43},
year = {2006}
}
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@conference{vanleeuwen11SEGext,
	title = {Probing the extended image volume},
	year = {2011},
	publisher = {SEG},
	organization = {SEG},
	abstract = {The prestack image volume can be defined as a cross- correlation of the source and receivers wavefields for non-zero space and time lags. If the background velocity is kinemati- cally acceptable, this image volume will have its main contri- butions at zero lag, even for complex models. Thus, it is an ideal tool for wave-equation migration velocity analysis in the presence of strong lateral heterogeneity. In particular, it allows us to pose migration velocity analysis as a PDE-constrained optimization problem, where the goal is to minimize the en- ergy in the image volume at non-zero lag subject to fitting the data approximately. However, it is computationally infeasi- ble to explicitly form the whole image volume. In this paper, we discuss several ways to reduce the computational costs in- volved in computing the image volume and evaluating the fo- cusing criterion. We reduce the costs for calculating the data by randomized source synthesis. We also present an efficient way to subsample the image volume. Finally, we propose an alternative optimization criterion and suggest a multiscale in- version strategy for wave-equation MVA.},
	keywords = {SEG},
	url = {http://slim.eos.ubc.ca/Publications/Public/Conferences/SEG/2011/vanleeuwen2011seg.pdf},
	author = {Van Leeuwen, Tristan and Herrmann, Felix J.}
}

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    	author = "J.E. Rickett and P.C. Sava",
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    	year = "2002",
    	volume = "67",
    	number = "3",
    	pages = "883--889",
	url={http://dx.doi.org/10.1190/1.1484531}
}

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    	title = "Wave-equation migration velocity analysis. {I}. {T}heory",
    	author = "Sava, Paul and Biondi, Biondi",
    	journal = "{G}eophysical {P}rospecting",
    	year = "2004",
 	volume = "52",
    	pages = "593--606",
	url={http://dx.doi.org/10.1111/j.1365-2478.2004.00447.x}
}
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publisher = {SEG},
year = {2002},
journal = {Geophysics},
volume = {67},
number = {4},
pages = {1202-1212},
keywords = {seismology; seismic waves; inhomogeneous media; acoustic wave velocity; acoustic wave reflection; geophysical techniques; acoustic tomography; geophysics computing; inverse problems; ray tracing; coherence},
url = {http://link.aip.org/link/?GPY/67/1202/1},
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keywords = {geophysical image processing; geophysical techniques; seismic waves; seismology; wave equations},
url = {http://link.aip.org/link/?GPY/75/S111/1},
}
@article{guerra:WB151,
author = {Claudio Guerra and Biondo Biondi},
collaboration = {},
title = {Fast 3D migration-velocity analysis by wavefield extrapolation using the prestack exploding-reflector model},
publisher = {SEG},
year = {2011},
journal = {Geophysics},
volume = {76},
number = {5},
pages = {WB151-WB167},
keywords = {wave equation; velocity analysis; tomography; modeling; random},
url = {http://link.aip.org/link/?GPY/76/WB151/1},
}
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author = {J. Schleicher and J. C. Costa and A. Novais},
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publisher = {SEG},
year = {2008},
journal = {Geophysics},
volume = {73},
number = {5},
pages = {VE161-VE171},
keywords = {geophysical prospecting; geophysical signal processing; iterative methods; seismic waves; seismology},
url = {http://link.aip.org/link/?GPY/73/VE161/1},
}
@article{fomel:1662,
author = {Sergey Fomel},
collaboration = {},
title = {Time-migration velocity analysis by velocity continuation},
publisher = {SEG},
year = {2003},
journal = {Geophysics},
volume = {68},
number = {5},
pages = {1662-1672},
keywords = {seismology; seismic waves; acoustic wave velocity; image processing; time-domain analysis; geophysics computing; geophysical techniques; finite difference methods; spectral analysis},
url = {http://link.aip.org/link/?GPY/68/1662/1},
}


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