Langbein J O, Linker M F, McGarr A, Slater L E
Science. 1982 Dec 17;218(4578):1217-9. doi: 10.1126/science.218.4578.1217.
Two-color laser ranging measurements during a 15-month period over a geodetic network spanning the San Andreas fault near Palmdale, California, indicate that the crust expands and contracts aseismically in episodes as short as 2 weeks. Shear strain parallel to the fault has accumulated monotonically since November 1980, but at a variable rate. Improvements in measurement precision and temporal resolution over those of previous geodetic studies near Palmdale have resulted in the definition of a time history of crustal deformation that is much more complex than formerly realized.
在加利福尼亚州帕尔姆代尔附近跨越圣安德烈亚斯断层的大地测量网络上，历时15个月进行的双色激光测距测量表明，地壳会在短至两周的时间段内以无震方式膨胀和收缩。自1980年11月以来，与断层平行的剪应变一直在单调累积，但速率可变。与帕尔姆代尔附近以往的大地测量研究相比，测量精度和时间分辨率的提高使得能够确定一个比以前认识到的要复杂得多的地壳变形时间历程。
