coDU, Durmid Hill
View North towards BatCave Buttes on Durmid Hill near creep meter. The creep-meter has operated continuously since 2004. Its data are retrieved manually.
Data
The above plot shows unededited data 2004 to Feb 2011. Prior to the triggered slip episode in April 2010 the San Andreas fault was slipping here at 1.4-1/8 mm/yr. Creep events and triggered slip cumulatively account for 12.5 mm of slip prior to 2011.Click on figure for enlarged view.
The raw data are offset at times of heavy rain (R). These offsets have been removed by eye (their pre-precipitation trend is used to judge the point of recovery a few months later). This reveals a back-ground creep rate of 1.8 mm/yr 2004-2008 increasing to 2.6-2.9 mm/year. Small double creep events occurred in 2006 and 2008: triggered slip occurred twice in 2009 and in the El Major earthquake of 2010