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SUMMARY:Position tomography and seismic inversion - Symes\, W (Rice Univer
 sity)
DTSTART:20111216T163000Z
DTEND:20111216T170000Z
UID:TALK34999@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Active source seismic data may depend on more parameters than 
 the spatial dimension of the earth model\, and thus must satisfy some inte
 rnal consistency conditions. Membership in the kernel of an annihilation o
 perator provides one useful way to express these conditions. For linearize
 d data simulation with smooth reference model\, annihilators may belong to
  well-studied classes of oscillatory integral operators\, which have rich 
 geometric structure. I will describe generally how annihilators arise and 
 lead to inversion algorithms\, and specifically how space-shift annihilato
 rs and associated position tomography problems may be used to determine th
 e reference model in the linearized description of reflected waveform inve
 rsion.\n
LOCATION:Seminar Room 1\, Newton Institute
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