Difference between revisions of "Dictionary:Aplanatic surface"

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(ap, l&#x2202; nat&#x2019; ik) The locus for a given traveltime of wave energy reflected or refracted at a surface. Wavefronts are aplanatic surfaces for reflection times observed at the source point; see Figures [[Dictionary:Fig_A-15|A-15]] and [[Dictionary:Fig_W-3|W-3]]. Aplanatic surfaces can be drawn (for example) to define a salt-sediment interface (Figure [[Dictionary:Fig_A-15|A-15]]c); each combination of source point and geophone position defines one aplanatic surface. If the velocity and other assumptions are correct, the salt-sediment interface is the common tangent to all of the aplanatic surfaces. See Gardner (1949) and Musgrave et al. (1967).
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(ap, l&#x2202; nat&#x2019; ik) The locus for a given traveltime of wave energy reflected or refracted at a surface. Wavefronts are aplanatic surfaces for reflection times observed at the source point; see Figures [[Special:MyLanguage/Dictionary:Fig_A-15|A-15]] and [[Special:MyLanguage/Dictionary:Fig_W-3|W-3]]. Aplanatic surfaces can be drawn (for example) to define a salt-sediment interface (Figure [[Special:MyLanguage/Dictionary:Fig_A-15|A-15]]c); each combination of source point and geophone position defines one aplanatic surface. If the velocity and other assumptions are correct, the salt-sediment interface is the common tangent to all of the aplanatic surfaces. See Gardner (1949) and Musgrave et al. (1967).
 
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Revision as of 19:54, 4 March 2018

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(ap, l∂ nat’ ik) The locus for a given traveltime of wave energy reflected or refracted at a surface. Wavefronts are aplanatic surfaces for reflection times observed at the source point; see Figures A-15 and W-3. Aplanatic surfaces can be drawn (for example) to define a salt-sediment interface (Figure A-15c); each combination of source point and geophone position defines one aplanatic surface. If the velocity and other assumptions are correct, the salt-sediment interface is the common tangent to all of the aplanatic surfaces. See Gardner (1949) and Musgrave et al. (1967).