%0 Journal Article %T Three-Dimensional Mapping of Dislocation Avalanches: Clustering and Space/Time Coupling %+ Laboratoire de glaciologie et géophysique de l'environnement (LGGE) %+ Laboratoire de Géophysique Interne et Tectonophysique (LGIT) %A Weiss, Jérôme %A Marsan, David %< avec comité de lecture %@ 0036-8075 %J Science %I American Association for the Advancement of Science (AAAS) %V 299 %P 89-92 %8 2003 %D 2003 %Z 2003Sci...299...89W %R 10.1126/science.1079312 %K MAT SCI %Z Sciences of the Universe [physics]Journal articles %X There is growing evidence for the complex, intermittent, and heterogeneous character of plastic flow. Here we report a three-dimensional mapping of dislocation avalanches during creep deformation of an ice crystal, from a multiple-transducers acoustic emission analysis. Correlation analysis shows that dislocation avalanches are spatially clustered according to a fractal pattern and that the closer in time two avalanches are, the larger the probability is that they will be closer in space. Such a space/time coupling may contribute to the self-organization of the avalanches into a clustered pattern. %G English %L insu-03607115 %U https://insu.hal.science/insu-03607115 %~ INSU %~ UNIV-SAVOIE %~ UGA %~ CNRS %~ UNIV-GRENOBLE1 %~ INPG %~ IRSTEA %~ OSUG %~ IFSTTAR %~ LGGE %~ AGREENIUM %~ INRAE %~ USMB-COMUE %~ UNIV-EIFFEL %~ IFSTTAR-UNIVEIFFEL