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Seismic data - mapping with two-dimensional data (view source)
Revision as of 20:51, 16 January 2014
, 20:51, 16 January 2014→Preparation for mapping
===Preparation for mapping===
===Preparation for mapping===
Before mapping, double-check that variations in the frequency, phase, and (especially) polarity of wavelets were accounted for during interpretation. Lines that were processed differently may appear to correlate well, even though they actually do not<ref name=pt07r59>Tucker, P. M., Yorston, H. J., 1973, Pitfalls in [[Seismic interpretation]]: Tulsa, OK, Society of Exploration Geophysicists Monograph Series n. 2, 50 p.</ref>. Also, make sure that the interpreted events tie at the intersections between lines. You may construct a map perfectly, but if the lines are misinterpreted, your map will be misleading (see “Seismic Interpretation”).
Before mapping, double-check that variations in the frequency, phase, and (especially) polarity of wavelets were accounted for during interpretation. Lines that were processed differently may appear to correlate well, even though they actually do not.<ref name=pt07r59>Tucker, P. M., Yorston, H. J., 1973, Pitfalls in [[Seismic interpretation]]: Tulsa, OK, Society of Exploration Geophysicists Monograph Series n. 2, 50 p.</ref> Also, make sure that the interpreted events tie at the intersections between lines. You may construct a map perfectly, but if the lines are misinterpreted, your map will be misleading (see [[Seismic interpretation]]).
The basemap should have clearly legible line and shotpoint numbers. The shotpoints should be printed at intervals that are smaller than the wavelength of the structures that will be mapped. The base map should be printed accurately, but sometimes mistakes occur. Remember that the accuracy of the base map partly determines the accuracy of your geological interpretation. If you question the accuracy of any part of the base map, consult with the person who drafted the map or check the field records yourself.
The basemap should have clearly legible line and shotpoint numbers. The shotpoints should be printed at intervals that are smaller than the wavelength of the structures that will be mapped. The base map should be printed accurately, but sometimes mistakes occur. Remember that the accuracy of the base map partly determines the accuracy of your geological interpretation. If you question the accuracy of any part of the base map, consult with the person who drafted the map or check the field records yourself.