Constant dimensionality of fault roughness from the scale of micro-fractures to the scale of continents
Many faults and fractures in various natural and man‐made materials share a remarkable common fractal property in their morphology. We report on the roughness of faults in rocks by analyzing the out‐of‐plane fluctuations of slip surfaces. They display a statistical power‐law relationship with a near...
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| Veröffentlicht in: | Geophysical research letters 2013-01, Vol.40 (1), p.83-87 |
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| creator | Renard, François Candela, Thibault Bouchaud, Elisabeth |
| description | Many faults and fractures in various natural and man‐made materials share a remarkable common fractal property in their morphology. We report on the roughness of faults in rocks by analyzing the out‐of‐plane fluctuations of slip surfaces. They display a statistical power‐law relationship with a nearly constant fractal exponent from millimeter scale micro‐fractures in fault zones to coastlines measuring thousands of kilometers that have recorded continental breakup. A possible origin of this striking fractal relationship over 11 orders of magnitude of length scales is that all faulting processes in rocks share common characteristics that play a crucial role in the shaping of fault surfaces, such as the effects of elastic long‐range stress interactions and stress screening by mechanical heterogeneities during quasi‐static fracture growth. |
| doi_str_mv | 10.1029/2012GL054143 |
| format | Article |
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| ispartof | Geophysical research letters, 2013-01, Vol.40 (1), p.83-87 |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Geomorphology Plate tectonics Rocks Seismology |
| title | Constant dimensionality of fault roughness from the scale of micro-fractures to the scale of continents |
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