High resolution 3D laser scanner measurements of a strike-slip fault quantify its morphological anisotropy at all scales
Article first published online: 25 FEB 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 4, February 2006
How to Cite
2006), High resolution 3D laser scanner measurements of a strike-slip fault quantify its morphological anisotropy at all scales, Geophys. Res. Lett., 33, L04305, doi:10.1029/2005GL025038., , , and (
- Issue published online: 25 FEB 2006
- Article first published online: 25 FEB 2006
- Manuscript Accepted: 24 JAN 2006
- Manuscript Revised: 9 JAN 2006
- Manuscript Received: 24 OCT 2005
 The surface roughness of a recently exhumed strike-slip fault plane has been measured by three independent 3D portable laser scanners. Digital elevation models of several fault surface areas, from 1 m2 to 600 m2, have been measured at a resolution ranging from 5 mm to 80 mm. Out of plane height fluctuations are described by non-Gaussian distribution with exponential long range tails. Statistical scaling analyses show that the striated fault surface exhibits self-affine scaling invariance with a small but significant directional morphological anisotropy that can be described by two scaling roughness exponents, H1 = 0.7 in the direction of slip and H2 = 0.8 perpendicular to the direction of slip.