Climate-Modulated Channel Incision and Rupture History of the San Andreas Fault in the Carrizo Plain

被引:52
作者
Ludwig, Lisa Grant [1 ,2 ]
Akciz, Sinan O. [1 ,2 ]
Noriega, Gabriela R. [1 ,2 ]
Zielke, Olaf [3 ]
Arrowsmith, J. Ramon [3 ]
机构
[1] Univ Calif Irvine, Program Publ Hlth, Irvine, CA 92697 USA
[2] Univ Calif Irvine, Calif Inst Hazards Res, Irvine, CA 92697 USA
[3] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA
关键词
1857; EARTHQUAKE; CALIFORNIA; SLIP;
D O I
10.1126/science.1182837
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The spatial and temporal distribution of fault slip is a critical parameter in earthquake source models. Previous geomorphic and geologic studies of channel offset along the Carrizo section of the south central San Andreas Fault assumed that channels form more frequently than earthquakes occur and suggested that repeated large-slip earthquakes similar to the 1857 Fort Tejon earthquake illustrate typical fault behavior. We found that offset channels in the Carrizo Plain incised less frequently than they were offset by earthquakes. Channels have been offset by successive earthquakes with variable slip since similar to 1400. This nonuniform slip history reveals a more complex rupture history than previously assumed for the structurally simplest section of the San Andreas Fault.
引用
收藏
页码:1117 / 1119
页数:3
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