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f Lower crustal reflectivity from waveform inversion
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 54th EAEG Meeting, Jun 1992, cp-45-00027
- ISBN: 978-90-73781-04-7
Abstract
Deep seismic reflection profiles show that the lower part of the continental crust often contains many strong sub-horizontal reflections. These reflections are interpreted as a sequence of finely layered structuren. To confirm or invalidate this interpretation, we can use a seismic waveform inversion to estimate the reflectivity in the lower crust. However, it is very difficult to invert for the whole data set, partly because of large computation time in modelling and partly because the reflected energy in the upper crost dominates the misfit function.