Elastic Full Waveform Inversion in a Space Frequency Formulation for Near-Surface Imaging

P274 ELASTIC FULL WAVEFORM INVERSION IN A SPACE FREQUENCY FORMULATION FOR NEAR-SURFACE IMAGING AUTHORS 1 2 1 2 C. GELIS J. VIRIEUX & G. GRANDJEAN Adress 1 : Geosciences Azur. 250 Rue A. Einstein. Sophia Antipolis. 06 560 Valbonne. France 2 : BRGM. Dept ARN. 3 avenue Claude Guillemin. BP 6009. 45 060 Orleans cedex 2. France Introduction Imaging near-surface structures represents nowadays one of the most difficult problems to solve. Indeed near-surface areas are complex they lead to an energetic “ground roll” and therefore hide information coming from deeper structures. Moreover some potential dangerous anomalies like cavities may exist