@article{5c8f013ab274432fa94986e1872414d2,
title = "Distribution of Aseismic Deformation Along the Central San Andreas and Calaveras Faults From Differencing Repeat Airborne Lidar",
abstract = "Fault creep reduces seismic hazard and serves as a window into plate boundary processes; however, creep rates are typically constrained with sparse measurements. We use differential lidar topography (11–13 year time span) to measure a spatially dense surface deformation field along a 150 km section of the Central San Andreas and Calaveras faults. We use an optimized windowed-iterative-closest-point approach to resolve independent creep rates every 400 m at 1–2 km apertures. Rates vary from <10 mm/year along the creeping fault ends to over 30 mm/year along much of the central 100 km of the fault. Creep rates are 3–8 mm/year higher than most rates from alignment arrays and creepmeters, likely due to the larger aperture of the topographic differencing. Creep is often focused along discrete fault traces, but strain is sometimes distributed in areas of complex fault geometry, such as Mustang Ridge. Our observations constrain shallow seismic moment accumulation and the location of the creeping fault trace.",
keywords = "San Andreas fault, fault creep, lidar, topographic differencing",
author = "Scott, {Chelsea Phipps} and DeLong, {Stephen B.} and Arrowsmith, {J. Ram{\'o}n}",
note = "Funding Information: Scott received funding from the US National Science Foundation Postdoctoral Fellowship 1625221 and the School of Earth and Space Exploration, Arizona State University. DeLong was supported by the National Earthquake Hazards Reduction Program and NASA grant 16‐ESI16‐0029 to A. Donnellan. We thank Keith Knudsen, Ryan Gold, Devin McPhilips, Yu Zhou, Lucy Flesch (Editor), and an anonymous reviewer for constructive comments during the peer review process. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Funding Information: Scott received funding from the US National Science Foundation Postdoctoral Fellowship 1625221 and the School of Earth and Space Exploration, Arizona State University. DeLong was supported by the National Earthquake Hazards Reduction Program and NASA grant 16-ESI16-0029 to A. Donnellan. We thank Keith Knudsen, Ryan Gold, Devin McPhilips, Yu Zhou, Lucy Flesch (Editor), and an anonymous reviewer for constructive comments during the peer review process. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Publisher Copyright: {\textcopyright}2020. The Authors.",
year = "2020",
month = nov,
day = "28",
doi = "10.1029/2020GL090628",
language = "English (US)",
volume = "47",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "22",
}