Granular compaction and the topology of pore deformation Mohammad Saadatfar, Hiroshi Takeuchi, Maryam Hanifpour, Vanessa Robins, Nicolas Francois and Yasuaki Hiraoka EPJ Web Conf., 140 (2017) 16009 Published online: 30 June 2017 DOI: 10.1051/epjconf/201714016009