Quantifying fault-zone activity in arid environments with high-resolution topography
Article first published online: 28 NOV 2007
Copyright 2007 by the American Geophysical Union.
Geophysical Research Letters
Volume 34, Issue 23, December 2007
How to Cite
2007), Quantifying fault-zone activity in arid environments with high-resolution topography, Geophys. Res. Lett., 34, L23S05, doi:10.1029/2007GL031295., , and (
- Issue published online: 28 NOV 2007
- Article first published online: 28 NOV 2007
- Manuscript Accepted: 4 OCT 2007
- Manuscript Revised: 18 SEP 2007
- Manuscript Received: 6 AUG 2007
 High-resolution airborne laser swath-mapping (ALSM) topography illuminates active faulting with unprecedented clarity. We contrast ALSM topography of two dextral faults in arid regions of California with slip rates that differ by an order of magnitude: The Lenwood fault, with rate of ∼1 mm/yr, and the Clark fault, a strand of the San Jacinto fault with net slip rate >10 mm/yr. Visualization of ALSM data reveals abundant fault scarps and deflected channels that when reconstructed can yield powerful slip constraints. Though many of these features may also be detected in existing aerial photography, these data are limited by stereo depth resolution and fixed illumination angle.