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Dear colleagues, the General Assembly of the European Geosciences Union (*EGU*) will be held in Vienna, Austria, from *7–12 April 2019*. We would like to draw your attention to session *SM4.4 **Geophysical imaging of near-surface structures and processes*, which aims to highlight recent advances and persistent challenges in near-surface imaging for a broad range of geophysical methods and applications. The session description is attached below and can be found together with a link for abstraction submissions here: https://meetingorganizer.copernicus.org/EGU2019/session/31892 Please note that the *deadline for abstract submission is 10 January 2019*, 13:00 CET and for those applying for EGU Roland Schlich *travel support, 1 December 2018*, 13:00 CET. We look forward to your contribution and please do not hesitate to share this announcement with other interested colleagues. Best regards, Florian Wagner, /University of Bonn/ Frédéric Nguyen, /University of Liège/ Anja Klotzsche, /Forschungszentrum Jülich/ James Irving, /University of Lausanne/ Andreas Kemna, /University of Bonn/ *SM4.4 Geophysical imaging of near-surface structures and processes <https://meetingorganizer.copernicus.org/EGU2019/session/31892>*/ / Geophysical imaging techniques such as seismic, (complex) electrical resistivity, electromagnetic, and ground-penetrating radar methods are widely used to characterize structures and processes in the shallow subsurface. Advances in experimental design, instrumentation, data acquisition, data processing, numerical modeling, and inversion constantly push the limits of spatial and temporal resolution. Despite these advances, the interpretation of geophysical images often remains ambiguous. Persistent challenges addressed in this session include optimal data acquisition strategies, (automated) data processing and error quantification, appropriate spatial and temporal regularization of model parameters, integration of prior information and non-geophysical measurements into the imaging process, joint inversion, Bayesian inference, as well as the quantitative interpretation of tomograms through suitable petrophysical relations. In light of these topics, we invite submissions concerning a broad spectrum of near-surface geophysical imaging methods and applications at different spatial and temporal scales. Novel developments in the combination of complementary measurement methods and process-monitoring applications are particularly welcome. -- Florian M. Wagner, Ph.D. Visiting Postdoctoral Scholar Earth and Environmental Sciences Area Lawrence Berkeley National Laboratory (LBNL) 1 Cyclotron Road 85B, Room 0115 Berkeley, CA 94720 USA Phone: 510-486-4267 www.fwagner.info ######################################################################## To unsubscribe from the GEOPHYSICS list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=GEOPHYSICS&A=1